Updated on 2026/03/07

写真a

 
NAKABEPPU OSAMU
 
Organization
Undergraduate School School of Science and Technology Professor
Title
Professor
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Degree

  • Doctor of Engineering ( Tokyo Institute of Technology )

Research Areas

  • Manufacturing technology (mechanical,electrical/electronic, chemical engineering) / Thermal engineering

Education

  • Tokyo Institute of Technology   Graduate School, Division of Integrated Science and Engineering

    - 1990.3

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    Country/Region: Japan

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  • Tokyo Institute of Technology   School of Engineering

    1984.4 - 1988.3

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    Country/Region: Japan

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Research History

  • Professor

    2007.4

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  • Meiji University School of Science and Technology, Department of Mechanical Engineering Associate Professor

    2006.4 - 2007.3

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  • Associate Professor

    2001.4 - 2006.3

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  • Associate Professor

    2000.2 - 2001.3

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  • Research Assistant

    1998.4 - 2000.1

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  • Research Assistant

    1996.10 - 1998.3

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  • Researcher

    1993.5 - 1994.3

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  • Research Assistant

    1990.4 - 1996.10

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Professional Memberships

Papers

  • Attempt of estimating flow characteristics from wall heat fluxes measured using a three-point micro-electro-mechanical systems sensor

    Kazuhito Dejima, Osamu Nakabeppu

    International Journal of Engine Research   22 ( 6 )   1974 - 1984   2021.6

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:SAGE Publications Ltd  

    DOI: 10.1177/1468087420917287

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  • Three-point MEMS heat flux sensor for turbulent heat transfer measurement in internal combustion engines

    Kazuhito Dejima, Osamu Nakabeppu, Yuto Nakamura, Tomohiro Tsuchiya, Keisuke Nagasaka

    International Journal of Engine Research   20 ( 7 )   696 - 705   2019.9

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    DOI: 10.1177/1468087418770308

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  • Development of metal substrate MEMS sensors for local multipoint heat flux measurement in engines

    Kazuhito Dejima, Osamu Nakabeppu, Yuto Nakamura, Tomohiro Tsuchiya, Keisuke Nagasaka

    International Heat Transfer Conference   2018-   8721 - 8726   2018

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Begell House Inc.  

    DOI: 10.1615/ihtc16.tpm.023004

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  • Development of a metal base MEMS sensor for heat flux measurement on Engine inner wall Reviewed

    84 ( 858 )   17   2018

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  • Turbulent properties in IC engine derived from wall heat flux measured with a three point thin film sensor

    O. Nakabeppu, K. Dejima

    International Heat Transfer Conference   2018-   8850 - 8857   2018

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    DOI: 10.1615/ihtc16.tpm.023077

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  • HEAT TRANSFER ON AN ENGINE INNER WALL MEASURED WITH A MEMS SENSOR Reviewed

    Kazuhito Dejima, Osamu Nakabeppu, Yuto Nakamura, Keisuke Nagasaka, Tomohiro Tsuchiya

    Proc. 6th International Symposium on Micro and Nano Technology   ISMNT-6   2099   2017.3

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  • Development of MEMS heat flux vector sensor for internal combustion engines

    Kazuhito Dejima, Osamu Nakabeppu, Keisuke Nagasaka, Yuto Nakamura, Tomohiro Tsuchiya

    COMODIA 2017 - 9th International Conference on Modeling and Diagnostics for Advanved Engine Systems   2017

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Japan Society of Mechanical Engineers  

    DOI: 10.1299/jmsesdm.2017.9.a202

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  • Local three-point heat flux measurement on sub-millimeter scale in an internal combustion engine

    Kazuhito Dejima, Osamu Nakabeppu, Yuto Nakamura, Tomohiro Tsuchiya

    11th Asia-Pacific Conference on Combustion, ASPACC 2017   2017-   2017

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  • Development of instantaneous local heat flux sensor for internal combustion engine

    Yuto Nakamura, Kazuhito Dejima, Tomohiro Tsuchiya, Osamu Nakabeppu

    11th Asia-Pacific Conference on Combustion, ASPACC 2017   2017-   2017

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  • HEAT FLUX MEASUREMENT ON ENGINE INNER WALL AND TRANSIENT HEAT CONDUCTION ANALYSIS Reviewed

    O. Nakabeppu, K. Dejima, Y. Nakamura, K. Nagasaka, T. Tsuchiya

    International Symposium on Micro-Nano Science and Technology 2016   2016.12

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  • HEAT FLUX MEASUREMENT OF SINGLE CYCLE ENGINE SIMULATOR (RCEM) WITH MEMS SENSOR Reviewed

    O. Nakabeppu, Y. Nakamura, K. Nagasaka, T. Tsuchiya, R. Yamada, S. Sato, H. Kosaka

    Proceedings of the 4th International Forum on Heat Transfer, IFHT2016   2016.11

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  • HEAT FLUX MEASUREMENT USING LASER INTERFEROMETRY AROUND A SPHERICAL GROWING BUBBLE DOMINATED BY LIQUID PHASE HEAT TRANSFER Reviewed

    K. Dejima, O.Nakabeppu

    The 27th International Symposium on Transport Phenomena   ISTP27   077   2016.9

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  • THIN FILM SENSOR ON METAL SUBSTRATE FOR MEASURING HEAT FLUX OF ENGINE INNER WALL Reviewed

    O. Nakabeppu, K. Nagasaka, Y. Nakamura, T. Tsuchiya, K. Dejima

    The 27th International Symposium on Transport Phenomena   2016.9

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  • Nano-DTA and nano-DSC with cantilever-type calorimeter Reviewed

    Osamu Nakabeppu, Kohei Deno

    THERMOCHIMICA ACTA   637   1 - 10   2016.8

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    DOI: 10.1016/j.tca.2016.05.005

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  • Thin film resistance sensor for wall heat flux measurement in premixed combustion

    NAKABEPPU Osamu, TSUCHIYA Tomohiro, NAKAMURA Yuto, NAGASAKA Keisuke

    Transactions of the JSME (in Japanese)   82 ( 840 )   16 - 00083-16-00083   2016.5

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Japan Society of Mechanical Engineers  

    <p>Heat flux measurement method with thin film resistance sensor in a premixed gas combustion field has been studied to develop an accurate heat flux sensor, and to grasp and improve a heat transfer loss of the engine in SIP (Cross-ministerial <u>S</u>trategic <u>I</u>nnovation Promotion <u>P</u>rogram) innovative combustion technology project. The MEMS technology was introduced to satisfy the requirement of the accurate heat flux measurement with high temporal, spatial and heat flux resolution for a turbulent heat transfer in the engine. The thin film resistance sensors of 250 to 1000 micron scale were fabricated on the Si substrate, and then a calibration method, measurement characteristics and response to the combustion were studied. Since the heat flux was measured through the surface temperature measurement and the transient heat conduction analysis of the sensor, accurate data and an exact thermal model are required. The heat flux calibration using self-heating showed a good agreement between the excited heat flux of 400 kW/m<sup>2</sup> level and measured one with an error less than 10 kW/m<sup>2</sup> for the wide frequency range from 200 Hz to 8 kHz by introducing an interfacial thermal resistance in the thermal model. The developed measurement system showed heat flux peak of 250 kW/m<sup>2</sup> level with noise of 10 kW/m<sup>2</sup> level against a butane-air premixed gas combustion in an open chamber. Heat transfer analysis showed that the heat flux trend after the peak can be explained by heat conduction between the burnt gas and the sensor wall. It was also demonstrated that the developed system can measure heat flux down to 10 kW/m<sup>2</sup> and up to 5 kHz frequency range. Good prospect of the heat flux sensor for the engine application was obtained with the sufficient accuracy and the resolutions.</p>

    DOI: 10.1299/transjsme.16-00083

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  • HEAT FLUX MEASUREMENT METHOD ON INNER WALL OF ENGINE WITH MEMS SENSOR Reviewed

    Osamu NAKABEPPU, Tomohiro TSUCHIYA, Yuto NAKAMURA, Keisuke NAGASAKA

    Proc. of the 1st PRTEC, PRTEC-14821   2016.3

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  • Improvement of Active Thermometry on Scanning Thermal Microscopy Reviewed

    Masanori Mizobe, Osamu Nakabeppu

    Proc. of the 1st PRTEC   PRTEC   14959   2016.3

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  • Study on Removal Performance of Suspended Particulate Matter by Humidity Swing Air Cleaning Method Reviewed

    Toshiyuki Haga, Osamu Nakabeppu

    Proc. of the 1st PRTEC   PRTEC   14716   2016.3

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  • Study on removal effect of suspended particulate matter by humidity swing air cleaning method Reviewed

    Toshiyuki Haga, Yuki Aoki, Osamu Nakabeppu

    JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY   11 ( 3 )   2016

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    DOI: 10.1299/jtst.2016jtst0038

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  • MEMS sensor measurement of surface temperature response during subcooled flow boiling in a rectangular flow channel Reviewed

    Tomohide Yabuki, Randy Samaroo, Osamu Nakabeppu, Masahiro Kawaji

    EXPERIMENTAL THERMAL AND FLUID SCIENCE   67   24 - 29   2015.10

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    DOI: 10.1016/j.expthermflusci.2015.02.002

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  • Flow Type Bio-Chemical Calorimeter with Micro Differential Thermopile Sensor Reviewed

    Masataka Saito, Osamu Nakabeppu

    JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY   15 ( 4 )   2917 - 2922   2015.4

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    DOI: 10.1166/jnn.2015.9665

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  • EVAPORATION AND DEWETTING OF MICROLAYER BENEATH BOILING BUBBLE IN MINICHANNEL Reviewed

    O. Nakabeppu, T. Saito, T.Yabuki

    ISTP-25   2014.9

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  • Heat transfer mechanisms in isolated bubble boiling of water observed with MEMS sensor Reviewed

    Tomohide Yabuki, Osamu Nakabeppu

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER   76   286 - 297   2014.9

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    DOI: 10.1016/j.ijheatmasstransfer.2014.04.012

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  • 湿度スイング空気清浄法における浮遊粒子状物質除去作用の理論的研究 Reviewed

    中別府修, 小野田渚

    Thermal Science & Engineering   22 ( 3 )   47 - 57   2014.7

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:日本伝熱学会  

    DOI: 10.11368/tse.22.47

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  • Removal characteristics of Suspended Particulate Matter with Humidity Swing Air Cleaning Method Reviewed

    Thermal Science and Engineering   22 ( 1 )   11 - 20   2014.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Heat Transfer Society of Japan  

    DOI: 10.11368/tse.22.11

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  • REMOVAL MECHANISMS OF SUSPENDED PARTICULATE MATTER IN HUMIDITY SWING AIR CLEANING METHOD Reviewed

    Nagisa Onoda, Osamu Nakabeppu

    PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2013, VOL 8B   2014

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  • Study on microlayer beneath flat boiling bubble in mini-channel with MEMS sensors Reviewed

    Takuya SAITO, Tomohide YABUKI, Osamu NAKABEPPU

    The 24th International SYmposium on Transport Phenomena, ISTP-24   312 - 317   2013.11

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  • Development of biochemical calorimeter with MEMS thermopile sensor

    Masataka Saito, Jun Takeuchi, Osamu Nakabeppu

    Proc. 3rd International Forum on Heat Transfer (IFHT2012),   IFHT2012-174   2012.11

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  • Micro-scale measurement of saturated and subcooled nucleate boiling heat transfer

    Tomohide Yabuki, Osamu Nakabeppu

    Proc. 3rd International Forum on Heat Transfer (IFHT2012),   IFHT2012-146   2012.11

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  • Study on SThM with Multifunctional Thermal Cantilever Probe

    Masayuki Shinya, Osamu Nakabeppu

    Proc. 3rd International Forum on Heat Transfer (IFHT2012)   IFHT2012-157   2012.11

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  • Micro-Thermal Analysis with Cantilever Type MEMS Calorimeter (Experiment of High Temperature Thermal Analysis)

    Junichi ISHII, Hiroki HAYAKAWA, Osamu NAKABEPPU

    The 8th KSME-JSME Thermal and Fluids Engineering Conference (TFEC8), Songdo, Incheon, KOREA,   GSF30-008   2012.3

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  • Development of Microscale Thermal Measurement Techniques by Scanning Thermal Microscope with Multifunctional Cantilever Probe

    Masayuki SHINYA, Osamu NAKABEPPU

    The 8th KSME-JSME Thermal and Fluids Engineering Conference (TFEC8), Songdo, Incheon, KOREA,   GSF30-010   2012.3

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  • Nanocalorimeter for DTA and Mass Measurement in High Temperature Range

    Junichi Ishii, Osamu Nakabeppu

    Netsu Sokutei   W39   14,19   2012.1

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  • VARIATION IN SIZE DISTRIBUTION OF SUSPENDED PARTICULATE MATTERS IN AIR WITH HUMIDITY SWING OPERATION Reviewed

    Nagisa Onoda, Osamu Nakabeppu

    PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION - 2010, VOL 7, PTS A AND B   831 - 836   2012

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  • Interferometric Measurement of the Liquid-Phase Temperature Field around an Isolated Boiling Bubble

    Tomohide Yabuki, Takuya Hamaguchi, Osamu Nakabeppu

    JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY   7 ( 3 )   463 - 474   2012

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    DOI: 10.1299/jtst.7.463

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  • REDUCTION EFFECTS OF SUSPENDED PARTICULATE MATTERS IN AIR BY THERMAL MOISTURE SWING METHOD

    Nagisa Onoda, Shota Ishiguchi, Osamu Nakabeppu

    PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2011, VOL 6, PTS A AND B   363 - 368   2012

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  • On adhesion type micro manipulator with thermal control of capillary force

    Osamu Nakabeppu, Tatsuhiko Kato, Masayuki Shinya

    Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B   78 ( 794 )   1870 - 1880   2012

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    DOI: 10.1299/kikaib.78.1870

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  • Filterless air cleaning with moisture thermal control method

    Nagisa Onoda, Shota Ishiguchi, Osamu Nakabeppu

    The 4th International Conference on Heat Transfer and Fluid Flow in Microscale (HTFFM-4)   HTFFM-4-128   2011.9

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  • Experimental study on heat transfer to boiling bubble from superheated liquid layer

    Tomohide Yabuki, Takuya Hamaguchi, Takayuki Kobayashi, Osamu Nakabeppu

    The 4th International Conference on Heat Transfer and Fluid Flow in Microscale (HTFFM-4)   HTFFM-4-144   2011.9

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  • EXPERIMENTAL ANALYSIS OF THERMAL AND ELECTRIC TRANSPORT CHARACTERISTICS OF NANO-GAPS Reviewed

    Kohei Ito, Tomoaki Hagio, Akira Matsuo, Yasushi Iwaisako, Osamu Nakabeppu

    PROCEEDINGS OF THE ASME/JSME 8TH THERMAL ENGINEERING JOINT CONFERENCE 2011, VOL 2   509 - +   2011

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  • HEAT TRANSFER CHARACTERISTICS OF ISOLATED BUBBLE NUCLEATE BOILING OF WATER Reviewed

    Tomohide Yabuki, Osamu Nakabeppu

    PROCEEDINGS OF THE ASME/JSME 8TH THERMAL ENGINEERING JOINT CONFERENCE 2011, VOL 1 PTS A AND B   1473 - 1482   2011

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  • AIR CLEANING METHOD WITH HUMIDITY SWING OPERATION FOR REDUCING SUSPENDED PARTICULATE MATTERS Reviewed

    Nagisa Onoda, Osamu Nakabeppu

    PROCEEDINGS OF THE ASME/JSME 8TH THERMAL ENGINEERING JOINT CONFERENCE 2011, VOL 2   29 - 35   2011

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  • Removal effect of humidity swing operation on suspended particulate matters Reviewed

    Nagisa Onoda, Osamu Nakabeppu

    Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C   76 ( 768 )   1945 - 1946   2010

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Mechanical Engineers  

    DOI: 10.1299/kikaic.76.1945

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  • On heat transfer mechanism of nucleate boiling with MEMS sensors (3rd report, evaluation of the approach method and heat transfer characteristics of isolated boiling bubble)

    Tomohide Yabuki, Osamu Nakabeppu

    Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B   76 ( 771 )   1932 - 1941   2010

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    DOI: 10.1299/kikaib.76.771_1932

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  • REMOVAL OF SUSPENDED PARTICULATE MATTERS BY HUMIDITY SWING OPERATION FOR AIR-CLEANING METHOD Reviewed

    Nagisa Onoda, Osamu Nakabeppu

    PROCEEDINGS OF THE ASME MICRO/NANOSCALE HEAT AND MASS TRANSFER INTERNATIONAL CONFERENCE, VOL 3   79 - 84   2010

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  • On heat transfer mechanism of nucleate boiling with MEMS sensors (2nd report, electrolysis triggering and heat transfer analysis)

    Osamu Nakabeppu, Hideaki Wakasugi

    Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B   76 ( 764 )   634 - 641   2010

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    DOI: 10.1299/kikaib.76.764_634

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  • MEMS sensor for heat transfer study on nucleate boiling Reviewed

    Tomohide Yabuki, Takuya Hamaguchi, Osamu Nakabeppu

    Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C   76 ( 768 )   1931 - 1932   2010

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    DOI: 10.1299/kikaic.76.1931

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  • APPROACH TO HEAT TRANSFER MECHANISM BENEATH BOILING BUBBLE WITH MEMS SENSOR Reviewed

    Tomohide Yabuki, Osamu Nakabeppu

    MNHMT2009, VOL 2   41 - 47   2010

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  • SThMによる局所熱伝導率計測に関する研究

    中別府修, 磨田謙一

    日本機械学会論文集(B編)   72 ( 722 )   2524-2531   2006.10

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    DOI: 10.1299/kikaib.72.2524

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  • Cell Metabolism Monitoring with MEMS Sensor

    NAKABEPPU Osamu, SAKAYORI Junichi

    Thermal Science and Engineering   14 ( 4 )   115-120 - 120   2006.10

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Heat Transfer Society of Japan  

    Cells and living tissue slightly but always generate metabolic heat as long as they are alive. Thus, biological activity can be measured through the observation of metabolic heat, which has been developed as &ldquo;bio-calorimetry&rdquo;. On the other hand, further improvements in thermal sensing ability can be expected with use of the MEMS (Micro Electro Mechanical System) technology. The purpose of this study is to develop the monitoring technique of the metabolic heat of cells in as small number as possible with the MEMS technology. If the monitoring technique of metabolism of a few cells or even a single cell is made available, it plays very important rolls in bio- and medical- engineering, pharmaceutical sciences, and so on. In this study, a bio-calorimeter with a MEMS thermopile sensor was made, and its performance and metabolism monitoring of Yeast were tested. The thermopile sensor consisted of 350 thin film thermocouples of Cr and Ni strips of 20 &mu;m width on a 150 &mu;m thick glass plate. The thermopile sensor composed a calorimetric cell as a bottom plate with thick aluminum frame. The calorimetric cell was placed in a triple thermostatic chamber which employs a proportional control with a Peltier device and PID control with heater. The calorimeter showed a sensitivity of 0.62 V/W under the condition of including culture solution, time constant of the calorimetric cell of 90 sec, and a noise equivalent power of 60 nW, which corresponds to metabolic heat of 3 &times; 10<sup>3</sup> cells of Yeast. In the growth experiments of Yeast, growth thermograms for 10<sup>5</sup>&sim;10<sup>7</sup> cells can be measured with reasonable generation times. It was demonstrated that the detectable number of Yeast cells of the MEMS calorimeter is much smaller than that for the traditional bio-calorimeter.

    DOI: 10.11368/tse.14.115

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  • On Heat Transfer Mechanism of Nucleate Boiling with MEMS Sensors : 1st Report, Temperature Measurement beneath Boiling Bubble

    NAKABEPPU Osamu, FURUKAWA Yuta

    Transactions of the Japan Society of Mechanical Engineers B   72 ( 722 )   2532-2539 - 2539   2006.10

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    Local temperature variation beneath boiling bubble was measured with a MEMS (Micro Electro-Mechanical Systems) integrated sensor to investigate a boiling heat transfer mechanism. The sensor consisting two trigger heaters and six thin film thermocouples across the heaters within 880 μm region on a silicon or glass substrate can measure temperature distribution of heating surface with less than 0.1 ms temporal resolution. As a result, measured temperature variations can be brought into correspondence with the bubble behavior taken by a synchronized high-speed video. The temperature variations also show a formation of micro layer, extension of a local dryout region and rewetting with bubble departure. Based on the measurement, a state transition chart of the heating wall beneath the bubble in temporal and spatial domain can be drawn. This study presents a new approach method to the heat transfer mechanism of mucleate boiling.

    DOI: 10.1299/kikaib.72.2532

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  • 超微量熱分析“ナノカロリメトリ”の技術動向

    中別府 修

    熱物性,日本熱物性学会   20 ( 3 )   138-144   2006.8

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  • ナノスケール温度・熱物性計測

    中別府 修

    マイクロ・ナノ熱流体ハンドブック,NTS   570-589   2006.1

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  • SCANNING THERMAL MICROSCOPY FOR QUANTITATIVE THERMAL MEASUREMENTS

    Osamu NAKABEPPU, Kenichi Tokita, Yuya Miyata, Takahiro Kanda

    'The Assembly of World Conference on Expermental Heat Transfer, Fluid Mechanics, and Thermodynamics Sixth World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics,9-b-15,(CD-ROM)'   2005.4

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  • 局所熱計測の世界

    中別府修

    日本応用物理学会第52回応用物理学関係連合講演会予稿集   No.0   44   2005.3

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  • Study onn Heat Trasfer beneath Vapor Bubble in Nucleate Boiling with MEMS Sensor

    Osamu NAKABEPPU, Hideki WAKASUGI, Yuta FURUKAWA

    'Proc. Of the 6th KSME-JSME Thermal and Fluids Engineering Conference,CJ-03(CD-ROM)'   2005.3

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  • Thermal Engineering Research with MEMS Sensors

    Osamu NAKABEPPU

    'Proc. Of the 6th KSME-JSME Thermal and Fluids Engineering Conference,DE-07(CD-ROM)'   2005.3

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  • Heat Transport characteristics of Micro-Loop Heat Pipe with Capillary Pump Structure

    Osamu NAKABEPPU, Yuya MIYATA, Takuya HORI

    Thermal Science and Engineering   Vol.13 ( No.1 )   pp47-52 - 52   2005.1

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  • Improvement of an Active Temperature Measurement Cantilever of a Scanning Thermal Microscope

    Osamu Nakabeppu, Takahiro Kanda

    IEEJ Transactions on Sensors and Micromachines   124 ( 12 )   453 - 458   2005

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    DOI: 10.1541/ieejsmas.124.453

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  • SThMによる局所熱伝導率計測法に関する研究

    中別府修, 磨田謙一

    日本機械学会熱工学コンファレンス2004講演論文集   2004.11

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  • Development of thermal conductivity measurement techniwue by scanning thermal microscopy

    Osamu Nakabeppu, Kenichi TOKITA

    Proc. 1st International Forum on Heat Transfer   pp221-222   2004.11

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  • Heat transport characteristics of micro-machined capillary pumped loop heat pipe

    Osamu NAKABEPPU, Yuya MIYATA

    Proc. 1st International Forum on Heat Transfer   pp43-44   2004.11

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  • MEMS熱分析の試み

    中別府修, 出野恒平

    日本熱測定学会第40回記念熱測定討論会講演要旨集   364-365   2004.10

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  • Applications of MEMS Seneors in Thermal Engineering

    Osamu NAKABEPPU

    'Engineering Conference International Proc. Of Transport Phenomena in Micro and Nanodevices,(CD-ROM)'   2004.10

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  • MEMSセンサによる沸騰気泡核近傍の局所温度計測

    中別府修, 古川雄太

    第41回日本伝熱シンポジウム講演論文集   2   361-362   2004.6

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  • マイクロチャンネルループヒートパイプの熱輸送特性

    中別府修, 宮田悠也

    第41回日本伝熱シンポジウム講演論文集   1   335-336   2004.6

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  • 極微細スケール実温度計測機能を有する走査型熱顕微鏡の開発

    中別府修

    文部科学省科学研究費補助金研究成果報告書   2004.5

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  • Experimental study on heat transport device with bubble drive micropump

    Osamu NAKABEPPU, Kenzaburo SEKI

    The Pacific Center of Thermal-Fluids Engineering Proc. of The 1st International Symposium on Micro & Nano Technology   V-1-03(CD-ROM)   2004.3

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  • Gas absorption of slug flow in microchannel (1st report, experimental study with CO2/water system)

    Osamu Nakabeppu, Kohei Deno

    Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B   70 ( 693 )   1285 - 1292   2004

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    DOI: 10.1299/kikaib.70.1285

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  • Gas Absorption of Slug Flow in Microchannl

    Osamu NAKABEPPU, Kohei DENO

    JSME International Symposium on Micro-Mechanical Engineering(ISMME2003)   No.03-202   pp344-350 - 350   2003.12

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    Gas absorption and pressure drop characteristics of a slug flow in a microchannel were studied experimentally with a CO_2 and water system. The slug flow provides advantages of a large specific interface area, a toroidal flow in the slug, and high heat transfer capability of the microchannel. The absorption rate was measured by optically detecting volume change of bubbles along the channel; then an absorption time constant was formulated as a function of inner diameter, bubble velocity, and slug length. The pressure drop was also formulated by fitting experimental data to an equation modeled as a sum of the Poiseuille flow part and the toroidal flow part. The formulas demonstrated high mass transfer performance and compactness of the proposed system. Simulation of the microchannel gas absorber, of which channel length was set to keep outlet liquid concentration at a specified value, showed high performance by reducing the channel diameter with a slight increase of pressure drop.

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  • Quantitative Temperature Imaging by Scanning Thermal Microscopy

    NAKABEPPU Osamu

    Transactions of Visualization Society of Japan   Vol.23 ( No.90 )   151-156 - 156_1   2003.11

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    DOI: 10.3154/jvs.23.151

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  • SThMによる局所熱伝導率の定量的計測に関する研究

    磨田謙一, 中別府修

    日本機械学会熱工学コンファレンス講演論文集   No.03-20   305-306   2003.11

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  • MEMSカンチレバーセンサーによる微小熱計測の試み

    中別府修

    日本機械学会熱工学コンファレンス講演論文集   No.03-20   303-304   2003.11

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  • 蒸気泡マイクロポンプを内蔵した熱輸送デバイス

    中別府修, 関健三郎

    第40回日本伝熱シンポジウム講演論文集   1   323-324   2003.6

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  • マイクロチャンネル内スラグ流におけるガス吸収特性

    出野恒平, 中別府修

    第40回日本伝熱シンポジウム講演論文集   2   569-570   2003.6

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  • 自励震動型ヒートパイプの流動・熱輸送特性

    村上正覧, 井上剛良, 中別府修

    第40回日本伝熱シンポジウム講演論文集   1   315-316   2003.6

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  • Operating Characteristics of Micro-Machined Bubble-Drive Micropumps

    Osamu Nakabeppu, Kenzaburo Seki, Kenichi Ohko

    'Proc. 6th ASME-JSME Thermal Engineering Joint Conference,A1-424(CD-ROM)'   2003.3

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  • Active and Passive Thermal Imaging in Scanning Thermal Microscopy

    Osamu Nakabeppu, Takamitsu Suzuki

    'Proc. 6th ASME-JSME Thermal Engineering Joint Conference,A1-304(CD-ROM)'   2003 ( 6 )   36 - 36   2003.3

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    Measurement of temperature and thermal property distributions with a nanometer scale spatial resolution is important in various fields such as micro- and nano-electronics, material research, and so on. Scanning Thermal Microscope (SThM) provides topological and thermal images with a spatial resolution of several tens of nanometers by a cantilever with a thermocouple or resistance temperature device. Usually, the SThM passively measures temperature or thermal properties by detecting thermal information through a cantilever tip on a sample and converting it with a calibration curve. However, the passive method has an important issue on accuracy of temperature measurement because measured values are influenced by various factors such as surface temperature, thermal properties, unevenness of sample surface, shapes of the tip, contact force, adsorption layer, and so on. Therefore, we have developed a novel active method for quantitative temperature imaging regardless of variations in thermal conductance at the contact point. In the active method, a thermal feedback control step maintains the cantilever at the same temperature as the sample surface by detecting heat flow along the cantilever and feeding power proportional to it to the cantilever; then cantilever temperature is measured by another sensor on it. The passive method has the advantages of systemic simplicity and rapid response. On the other hand, the active method affords accuracy in temperature measurement : it can measure real temperature in principle as long as the thermal conductance has a finite value, no matter how it changes. We experimentally examined the active method by producing multi-function cantilevers and a feedback circuit. The cantilevers have a heat flow sensor, electric heater and a temperature sensor on their small silicon dioxide bodies, as shown in Fig. A1. The active system with sufficient heat flow detection sensitivity demonstrated good performance in real temperature measurement regardless of thermal conductivity differences among samples. The measurement system showed a thermal response of about 50Hz when the cantilever contacts on a tiny thin film resistor on the SThM under a vacuum condition. Furthermore, imaging tests demonstrated performance of the active method. Figure A2 shows a result of topological and thermal images of chromium strips by passive and active methods. Maximum temperature in the active method agreed well with strip temperature measured from electric resistance. It shows that the feedback system compensates variation of contact conductance. Now, we have two thermal imaging modes in the SThM with nano-scale spatial resolution : one is the passive mode with a fast and easy thermal imaging capability, the other is the active mode with quantitative temperature imaging capability.[figure]

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  • Development of null method type radiation temperature measurement system : Verification of measurement principle and fabrication of MEMS sensor

    NAKABEPPU Osamu, SASAKI Kazuyuki

    Proceedings of thermal engineering conference   No.02-22   109-110 - 110   2002.11

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    A novel radiation temperature measurement method was invented. In the traditional radiation thermometry, an emissivity data of a sample is necessary for converting the detected radiation intensity into temperature with a particular calibration curve. On the other hand, temperature of the sample can be decided by finding the sensor temperature at which the radiation intensity is null in our method. Introduction of the null method into radiation thermometry eliminates the need for the emissivity value. The principle of the method was verified with a measurement system where a heater-equipped commercial thermopile device was driven with a thermal feedback circuit. Quantitative temperature measurement was achieved for the flat brass surface with black paint or with plastic tape. Furthermore, a integrated radiation sensor having a cantilever type thermopile, electric heater and thermocouple was made by the silicon micro-fabrication technology. Measurement test with the sensor showed that the method absorbs the difference in emissivity, and that local temperature distribution in the sensor influences the detection of radiation intensity.

    DOI: 10.1299/jsmeptec.2002.0_109

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  • Development of Scanning Thermal Microscopy for Nano-scale Real Temperaure Measurement.

    Osamu Nakabeppu, Takamitsu Suzuki

    'Heat Transfer 2002,Proceedings of the Twelfth International Heat Transfer Conference'   Vol.1   pp447-452 - 452   2002.8

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  • Microscale real temperature measurement on Scanning Thermal Microscopy

    NAKABEPPU Osamu, SUZUKI Takamitsu

    Transactions of Visualization Society of Japan   22 ( 1 )   171-172 - 172   2002.8

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    Scanning Thermal Microscope takes topographic and thermal images with sub-micron spatial resolution. A real temperature measurement method on the SThM has been developed by using a thermal feedback system, where a cantilever is kept same temperature as sample by generating heat proportional to heat flow along it. The micro-fabricated cantilever having thermopile, heater and thermocouple showed good performance of temperature accuracy of below ±1K, contact size of less than 30nm, and thermal response of 50Hz. It is also demonstrated that the system takes qualitative thermal images by a passive operation and quantitative temperature images by the active operation regardless of variations in the contact condition and thermal properties.

    DOI: 10.3154/jvs.22.1Supplement_171

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  • マクロヒーターからの気泡生成における溶存ガスの影響

    井上剛良, 本郷章紀, 中別府修

    第39回日本伝熱シンポジウム講演論文集   1   153-154   2002.6

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  • 蒸気泡駆動型マイクロポンプの作動特性

    関健三郎, 中別府修, 外崎峰広, 堀和仁

    第39回日本伝熱シンポジウム講演論文集   3   765-766   2002.6

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  • 走査型熱顕微鏡における実温度計測システムの開発

    中別府修, 鈴木孝充, 井上剛良

    第39回日本伝熱シンポジウム講演論文集   2   369-370   2002.6

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  • 熱制御系へのMEMSの応用

    中別府修

    マイクロマシン技術への多分野萌芽技術の適用に関する研究   292-310   2002.4

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  • Microscale temperature measurement by scanning thermal microscopy

    O Nakabeppu, T Suzuki

    JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY   69 ( 3 )   727 - 737   2002

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    DOI: 10.1023/A:1020683217466

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  • SThM用サーマルカンチレバーの実温度計測特性

    鈴木孝充, 中別府修, 井上剛良

    日本機械学会 熱工学講演会講演論文集   No.01-9   387-388   2001.11

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  • 気泡震動を利用したダイナミックバブル型マイクロポンプに関する研究

    中別府修

    マイクロマシン技術に関する研究助成第6回研究成果報告書   1-9   2001.9

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  • プラグノズルのボートテールドラッグ低減に関する数値計算

    根岸秀世, 藤井孝藏, 中別府修

    日本機械学会2001年度年次大会講演論文集   4   100-101   2001.8

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  • 結晶成長速度の実測値を利用した形態形成シュミレーション

    中別府修, 伊藤健郎

    日本機械学会2001年度年次大会講演論文集   2   373-374   2001.8

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  • 逆自然対流システムを指向した可逆熱収縮性粒子の創製

    赤木斉, 中別府修

    第38回日本伝熱シンポジウム講演論文集   2   521-522   2001.6

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  • マイクロチャンネル熱交換システムの伝熱・流動特性

    村上陽一, 中別府修, 井上剛良

    第38回日本伝熱シンポジウム講演論文集   1   135-136   2001.6

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  • 走査型熱顕微鏡のための温度計測用マイクロカンチレバーの開発

    鈴木孝充, 中別府修, 井上剛良

    第38回日本伝熱シンポジウム講演論文集   1   325-326   2001.6

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  • 走査型紫外線光電子顕微鏡の開発に向けて(第2報:同軸プローブによる光電子画像計測)

    宮島俊希, 中別府修

    第38回日本伝熱シンポジウム講演論文集   1   327-328   2001.6

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  • Microscale Thermal Measurement by Scanning Thermal Microscopy.

    Nakabeppu Osamu

    Netsu Sokutei   Vol.28 ( No.1 )   18-28 - 28   2001.1

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    The Scanning Thermal Microscopy (SThM) has been developed since 1986 by adding a temperature detective function with various techniques to the Scanning Tunnel Microscopy (STM) or the Atomic Force Microscopy (AFM). The SThM can measure temperature and thermal properties distribution with spatial resolution of less than 100nm. The remarkable improvement in the spatial resolution for thermal measurements will enable direct thermal observation of submicron structures, such as micro-electric devices, ICs, composite materials, and local catalytic reactions. This review introduces the present state and features of various types of SThM, and then gives a detailed description of a promising SThM with a thermocouple cantilever probe. Furthermore, an active method for the accurate real temperature measurement with high spatial resolution is introduced.

    DOI: 10.11311/jscta1974.28.18

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  • Working Principle and Characteristics of Bubble-Driven Micropump

    NAKABEPPU Osamu, OKO Kenichi, INOUE Takayosi

    The proceedings of the JSME annual meeting   Vol.1   715-716 - 716   2000.8

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    A novel simple micropump driven by bubble generated by D.C. heating was developed and investigated. The pump consists of a glass tube narrowed in the middle and heater located at the conical region of tube. Observation of the bubble with a high speed video or by detecting displacement of laser passed working fluid near the heater showed that bubble generates, travels toward widening direction and collapses periodically. Pump performance of maximum pressure of 400Pa and maximum flow rate of 40μl/min was measured. The maximum pressure for various pumps was related to minimum diameter of the tube. It was shown from both experiment and numerical simulation using a simple model that driving force of the pump is made by surface tension effect. The simulation showed that taking evaporation and condensation of bubble into theoretical model is important for predicting the bubble behavior and the pump performance.

    DOI: 10.1299/jsmemecjo.2000.1.0_715

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  • 原子間力顕微鏡を用いた実温度計測法の開発

    井下田正信, 中別府修, 井上剛良

    第37回日本伝熱シンポジウム講演論文集   Vol.1   383-384   2000.5

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  • 積層型マイクロチャンネル熱交換器の流動・伝熱特性

    中別府修, 村上陽一, 井上剛良

    第37回日本伝熱シンポジウム講演論文集   Vol.1   363-364   2000.5

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  • 走査型紫外線光電子顕微鏡の開発に向けて(光電効果の局所計測技術の確立)

    宮島俊希, 中別府修, 井上剛良

    第37回日本伝熱シンポジウム講演論文集   Vol.1   385-386   2000.5

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  • MRI計測データに基づく多孔質体内熱・物質輸送モデルの構築

    近藤昌博, 井上剛良, 中別府修

    第37回日本伝熱シンポジウム講演論文集   Vol.3   957   2000.5

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  • 竜巻型旋回流の流動構造

    鈴木佑二, 中別府修, 岩崎健一, 井上剛良

    日本流体力学会年会’99講演論文集   129-130   1999.12

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  • MRI計測データに基づく多孔質体内熱・物質輸送シュミレーション

    近藤昌博, 井上剛良, 中別府修

    日本機械学会 熱工学講演会講演論文集   1999   87-88   1999.11

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  • AFMを用いた微小スケールにおける能動型絶対温度計測

    井下田正信, 中別府修, 井上剛良

    日本機械学会 熱工学講演会講演論文集   147-148   1999.11

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  • 原子間力顕微鏡を用いた微小空間スケール絶対温度計測

    井下田正信, 中別府修, 井上剛良

    平成11年度秋季第60回応用物理学会学術講演会予稿集   113   1999.9

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  • 積層型マイクロチャンネル熱交換器の流動伝熱特性

    村上陽一, 中別府修, 井上剛良

    日本機械学会東北支部米沢地方講演会講演論文集   109-110   1999.9

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  • Experimental study on elestronand heat ransfer through metallic point contact.

    Osamu Nakabeppu, Makoto Kajii, Msanobu Igeta

    Proceedings of the 5th ASME/JSME Joint Thermal Engineering Conference   AJTE99-6514(CD)   1999.8

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  • Microscale Real Temperature Meeasurement by the AFM using Thermal Feedback Method

    Osamu NKABEPPU, Masanobu, IGETA&Takayoshi INOUE

    Thermal Science and Engineering   Vol.7   pp87-94 - 94   1999.8

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  • ダイナミックバブル型マイクロポンプの作動特性と気泡震動の利用

    中別府修, 谷寛之, 井上剛良

    日本機械学会1999年度年次大会講演論文集   Vol.4   193-194   1999.8

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  • 微小発熱体の浸漬冷却における溶存ガスの影響

    澤田弘崇, 中別府修, 井上剛良

    日本機械学会1999年度年次大会講演論文集   Vol.4   113-114   1999.8

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  • ポイントコンタクト熱起電力を用いた微小スケール熱計測

    梶井誠, 中別府修, 井下田真信, 井上剛良

    第36回日本伝熱シンポジウム講演論文集   Vol.1   193-194   1999.5

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  • 結晶成長速度の異方性に関する実験的研究

    中別府修, 赤木斉, 井上剛良

    第36回日本伝熱シンポジウム講演論文集   Vol.3   585-586   1999.5

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  • 原子間力顕微鏡の熱工学的応用

    中別府修

    日本機械学会 熱工学講演会講演論文集   165-166   1998.11

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  • 凍結濃縮によるタンパク質の結晶化に関する研究

    中別府修, 村上陽一, 井上剛良, 土方邦夫

    第35回日本伝熱シンポジウム講演論文集   Vol.3   829-830   1998.5

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  • Microscopic Study on the Solidification of Aqueous Solutions Using Laser Interferometry

    Osamu Nakabeppu, Kenji Iwana, Kenji Ishiguro, Kunio Hijikata

    HeatTransfer-Japanese Research   27 ( 5 )   pp353-364   1998.5

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  • Phase Field Model による過冷却凝固のシュミレーション

    中別府修, 松本洋一郎

    第35回日本伝熱シンポジウム講演論文集   Vol.3   975-976   1998.5

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  • ポイントコンタクトにおける伝熱特性

    梶井誠, 中別府修, 井上剛良

    第35回日本伝熱シンポジウム講演論文集   Vol.3   965-966   1998.5

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  • Rhase Field Modelによる過冷却凝固のシュミレーション

    中別府修, 土方邦夫

    日本機械学会論文集B編   64巻 ( 618号 )   463-470   1998.2

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    DOI: 10.1299/kikaib.64.463

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  • Microscale Thermal Measurement using the Atomic Force Microscope (2nd Report, Temperature and Thermophysical Properties Measurement

    NAKABEPPU Osamu, IGETA Masanobu, KAJII Makoto, HIJIKATA Kunio

    Transactions of the Japan Society of Mechanical Engineers. Series B.   64巻 ( 618号 )   549-555 - 555   1998.2

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    Experimental study on microscale measurement of temperature and thermophysical properties using the Atomic Force Microscope was conducted. Thermal and topological images were taken by scanning a gold film on nickel wire type thermocouple probe on sample with constant contact load. Visualization of temperature distribution of thin film resistor of 20μm square and thermal conductance distribution of composite material called CFRP were attempted. With reducing ambient gas pressure, heat transfer mode between the probe and sample changes from gas conduction to solid conduction through contact point, thus contrast of temperature image becomes weaker and spatial resolution improves from 30 μm to less than 1 μm. In the properties measurement, it has been demonstrated that sub-micron scale visualization of thermal conductance is possible by this method and resultant image is affected by sample geometry and thermophysical properties distribution.

    DOI: 10.1299/kikaib.64.549

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  • 2成分液膜の蒸発における表面張力不安定現象

    中別府修, 土方邦夫

    日本学術会議 第46回応用力学講演会講演論文集   99-100   1997.12

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  • Numerical Simulation of Dendritic Solidification by Phase Field Model

    Osamu Nakabeppu, Yoichirou Matsumoto, Kunio Hijikata

    Pacific Center of Thermal-Fluids Engineering Proc. of the Tenth International Symposium on Transport Phenomena in Thermal Science and Process Engineering   Vol.2   397-402   1997.11

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  • Microscopic Study on Heat Transfer and Thermo-physical Properties of Composite Material.

    Osamu Nakabeppu, Masanobu Igeta, Kunio Hijikata

    'HTD-Vol.351,proc. of the ASME Heat Trasfer Divisin'   Vol.1 ( ASME-IMECE1997 )   pp287-295 - 295   1997.11

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  • 液中の上昇気泡に対する不純物の影響

    山本愛彦, 平瀬実, 中別府修, 高木周, 松本洋一郎

    日本流体力学会第11回数値流体力学シンポジウム講演論文集   229-230   1997.11

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  • Phase Field Model による過冷却凝固のシュミレーション

    中別府修, 土方邦夫

    日本機械学会第74期通常総会講演会講演論文集   (1)   128-129   1997.8

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  • 水溶液凍結の微細構造に関する研究

    中別府修, 日隈雅之, 土方邦夫

    日本機械学会 熱工学シンポジウム講演論文集   No.97-6   24-25   1997.7

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  • Experimental study on point contact transport phenomena using the atomic force microscope

    O Nakabeppu, M Igeta, K Hijikata

    MICROSCALE THERMOPHYSICAL ENGINEERING   1 ( 3 )   201 - 213   1997.7

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  • 非線形効果を用いた熱物性値の多角的計測法

    中別府修, 崎山幸紀

    第34回日本伝熱シンポジウム講演論文集   Vol.1   159-160   1997.5

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  • 原子間力顕微鏡を用いた微小接触面における熱・電子輸送の解明

    中別府修, 井下田真信, 井上剛良

    第34回日本伝熱シンポジウム講演論文集   Vol.1   167-168   1997.5

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  • スラッシュ生成に伴う流動・伝熱現象

    吉高恵美, 中別府修, 土方邦夫

    第31回空気調和・冷凍連合講演会論文集   145-148   1997.4

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  • 干渉法を用いた水溶液凝固現象の微視的研究

    中別府修, 土方邦夫, 岩名賢司, 石黒博

    日本機械学会論文集B編   63巻 ( 608号 )   1412-1417   1997.4

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    DOI: 10.1299/kikaib.63.1412

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  • 薄膜生成過程における3次元核成長に関する研究

    土方邦夫, 宮崎康次, 井上剛良, 中別府修

    日本機械学会論文集B編   63巻 ( 605号 )   261-266   1997.1

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    DOI: 10.1299/kikaib.63.605_261

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  • Prediction of Ice Storage Process in Dynamic-type Ice Storage System

    TANINO Masayuki, KOZAWA Yoshiyuki, HIJIKATA Kunio, NAKABEPPU Osamu

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers   Vol.14 ( No.1 )   pp87-95 - 95   1997.1

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    The distribution of ice-rich layer in an ice storage tank is an important factor to estimate the thermal performance of a dynamic-type ice storage system. The ice-rich layer distribution and the water permeability were tested by using cylindrical tanks. The accumulation of ice-rich layer was predicted by a model analysis in which Darcy's law was applied. From the results of both experiments and analyses, the effect of water flow rate on the time history of the ice-rich layer formation were revealed. An average downward superficial velocity in the ice-rich layer is a dominant factor in the component design for an efficient use of an ice storage tank. This calculation model for the distribution of ice-rich layer can be considered to be applicable to realize the high thermal performance for large-scaled ice storage tanks.

    DOI: 10.11322/tjsrae.14.87

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  • Nucleationin Thin Film Processing

    Kunio Hijikata, Koji Miyazaki, Takayoshi Inoue, Osamu Nakabeppu

    ASME Transport Phenomena in Meterial Processing and Manufacturing 1996   HTD-Vol.336/Fed-Vol.240   1996.11

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  • 'Measurement of Temperature, Concentration and Velocity in Laminar Flow Using a Single Wire Probe'

    Osamu Nakabeppu, Atsuo Kinoshita, Kunio Hijikata

    Proc. of theASME Heat Transfer Division   vol.3 HTD-Vol.334 ( Imece1996 )   1996.11

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  • Microscopic Study of Aqueous Solution Solidification Using Laser Interferometry

    Osamu Nakabeppu, Kenji Iwana, Kunio Hijikata

    Proc. of the 3rd KSME-JSME Thermal Engineering Conference   vol.2   pp31-36   1996.11

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  • Experimental Study on Point Contact Transport Phenomena using the Atomic Force Microscope

    O.Nakabeppu, M.Igeta, K.Hijikata

    'ASME/JSME US-J. Joint Seminor,Moleculer and Microscale Transport Phenomena'   1996.8

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  • Measurement of Temperature and Thermal Properties of Fluid by Detecting 1.OMEGA. and 3.OMEGA. Components. 1st Report. Experimental Study.

    NAKABEPPU Osamu, YAMAMOTO Norihiko, KINOSITA Atsuo, HIJIKATA Kunio

    Transactions of the Japan Society of Mechanical Engineers Series C   62巻 ( 599号 )   2767-2773 - 2773   1996.7

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    A method of measuring temperature and thermal properties of nonconductive fluids was experimentally studied, where 1ω and 3ω components of the voltage drop across a thin metal wire probe heated with an AC current of frequency ω were measured. The temperature distribution of a weak natural convection plume from a horizontal wire in water was visualized by this method and it was shown that background noise and self-heating of the probe limit the measurement resolution. Thermal conductivity measurements were performed for air, water, ethanol, etc. using a 10μm-diameter platinum wire, with applied AC frequency ranging from 0.1 Hz-10 kHz. Since thermal conductivity is derived from the measured 3ω component by comparing with a thermal conduction model, the effect of natural convection from the probe itself was important and a restriction on applicability of the method was obtained in terms of the Rayleigh and Fourier numbers.

    DOI: 10.1299/kikaib.62.2767

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  • Theoretical and experimental studies on the pseudo-dropwise condensation of a binary vapor mixture

    K Hijikata, Y Fukasaku, O Nakabeppu

    JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME   118 ( 1 )   140 - 147   1996.2

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    DOI: 10.1115/1.2824027

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  • Microscale Temperature Measurement Using an Atomic Force Microscope

    NAKABEPPU Osamu, HIJIKATA Kunio, CHANDRACHOOD Madhavi, LAI Jie, MAJUMDAR Arun

    Transactions of the Japan Society of Mechanical Engineers. Series B.   62巻 ( 593号 )   284-290 - 290   1996.1

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    A new technique, which uses the Atomic Force Microscope (AFM) coupled with a micro-thermocouple cantilever, for measurement of microscale temperature profile has been developed. Topological and thermal images of any solid sample can be obtained simultaneously by this technique. Using a handmade thin-wire thermocouple and a thin-film thermocouple deposited on a commercially available Si_3N_4 cantilever, some working small electric devices were measured in both air and vacuum. Since heat conduction through the air between the sample and the probe was dominant in air, clear but distorted thermal images were obtained. In vacuum, heat transfer through the contact point between them was so small that a signal to noise ration was low and the conventional signal amplifying technique was not helpful. The Lock-in technique was employed to detect such small signals and finally, a true temperature image of sample surface was acquired. Also, the thermal environment surrounding the cantilever in the AFM is discussed in this paper.

    DOI: 10.1299/kikaib.62.284

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  • The Measurement of Temperature and Thermal Conductivity of Fluid with an AC Driven Thin Wire

    Osamu Nakabeppu, Kunio Hijikata, Norihiko Yamamoto, Arun Majumdar

    Univ. Illinois at Urbana-Chhamp aign Symposium on Thermal Science and Enrineering in Honor of Chancellor Chang-Lin Tien.   1995.11

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  • 原子間力顕微鏡を用いた微小領域の熱計測

    中別府修, 土方邦夫, 井下田真信, A. Majumdar

    日本熱物性学会 Thermophysical Propaties   17   51-54   1995.10

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  • THERMAL IMAGING BY ATOMIC-FORCE MICROSCOPY USING THERMOCOUPLE CANTILEVER PROBES

    A MAJUMDAR, J LAI, M CHANDRACHOOD, O NAKABEPPU, Y WU, Z SHI

    REVIEW OF SCIENTIFIC INSTRUMENTS   66 ( 6 )   3584 - 3592   1995.6

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    DOI: 10.1063/1.1145474

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  • Microscal Thermal Imaging using the Atomic Force Microscope

    M.Chandrachood, O.Nakabeppu, Y.Wu,J.Lai, A.Majumdar

    ASMG/JSME Thermal Engineering Conference   Vol.1   505 - 510   1995.6

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  • 基盤上におけるクラスター生成に関する研究

    宮崎康次, 長崎孝夫, 土方邦夫, 中別府修

    第33回日本伝熱シンポジウム講演論文集   1   325-326   1995.5

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  • レーザー干渉を用いた水溶液凝固の微細構造に関する研究

    土方邦夫, 岩名賢司, 中別府修, 石黒博

    第32回日本伝熱シンポジウム講演論文集   93-94   1995.5

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  • 交流細線プロープによる温度・濃度・速度計測

    中別府修, 木下敦夫, 藤井丕夫, 土方邦夫

    第33回日本伝熱シンポジウム講演論文集   3   863-864   1995.5

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  • ダイナミック型氷蓄熱システムの蓄氷予測

    谷野正幸, 小澤由行, 土方邦夫, 中別府修

    第33回日本伝熱シンポジウム講演論文集   1   243-244   1995.5

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  • 基本波・3倍高調波計測による温度・熱伝導率の計測

    土方邦夫, 山本紀彦, 中別府修, A.Majumdar

    第32回日本伝熱シンポジウム講演論文集   467-468   1995.5

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  • SCANNING THERMAL IMAGING MICROSCOPY USING COMPOSITE CANTILEVER PROBES

    O NAKABEPPU, M CHANDRACHOOD, Y WU, J LAI, A MAJUMDAR

    APPLIED PHYSICS LETTERS   66 ( 6 )   694 - 696   1995.2

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    DOI: 10.1063/1.114102

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  • AFMを用いた微小スケールの温度計測

    中別府修

    第1回日本伝熱学会講習会「温度計測と問題点」   65-68   1995.2

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  • Theoretical and Experimental Studies on the Micro-Structure of Pseude-Drop wise Condensation of a Benary Vapor Mixture

    K.Hijikata, Y.Fukasaku, O.Nakabeppu

    'ASME,Microscale Heat Transfer'   HTD-Vol.291   pp57-62   1994.11

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  • 2成分混和性媒体の滴状凝縮に関する研究

    土方邦夫, 深作善郎, 中別府修

    第31回日本伝熱シンポジウム講演論文集   532-534   1994.5

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  • 原子間力走査型顕微鏡を用いた微小スケール温度場の可視化

    中別府修, Madhavi Chandrachood, Jie Lai, Arunava Majumdar

    第31回日本伝熱シンポジウム講演論文集   367-369   1994.5

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  • Instability Analysis of the Drop Growth Mechanism on Condensation of a Water-Ethanol Binary Mixture

    Hijikata Konio, Fukasaku Yoshiro, Nakabeppu Osamu

    Transactions of the Japan Society of Mechanical Engineers. Series B.   60巻 ( 572号 )   1337-1342 - 1342   1994.4

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    When a water-ethanol binary mixture condenses, one observes dropwise condensation on the liquid film even though either substance is completely soluble in the other. The phenomenon is not well understood. This paper discusses liquid film instability using perturbation theory as the drop growth mechanism. The results show that in drop growth, the Marangoni number (Ma, i.e. , the concentration dependence of the surface tension) plays a more important role than the absolute value of the surface tension. When a pure, single-component vapor condenses, dropwise condensation does not occur because Ma of a pure substance is always negative ; however, in a binary mixture, the surface tension may be different, and therefore the possibility exists that Ma is positive. If so, the mode of condensation may become dropwise. However, this will depend on the diffusive resistance which, if lowered, makes dropwise condensation more difficult.

    DOI: 10.1299/kikaib.60.1337

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  • THEORETICAL AND EXPERIMENTAL STUDIES ON THE PSEUDO-DROPWISE CONDENSATION OF BINARY VAPOR MIXTURE

    K HIJIKATA, Y FUKASAKU, O NAKABEPPU

    PROCEEDINGS OF THE GERMAN-JAPANESE SYMPOSIUM ON MULTI-PHASE FLOW   KfK5389   325 - 333   1994

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  • Film/substrate thermal boundary resistance for an Er-Ba-Cu-O high-Tc thin film

    P. E. Phelan, Y. Song, O. Nakabeppu, K. Ito, K. Hijikata, T. Ohmori, K. Torikoshi

    Journal of Heat Transfer   116 ( 4 )   1038 - 1041   1994

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    DOI: 10.1115/1.2911440

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  • Thermoelectric Voltage at Point Contacts by Electron Tunneling Effect

    Kunio Hijikata, Kohei Ito, Osamu Nakabeppu, Patric E. Phelan, Kunikazu Torikoshi

    Transactions of the Japan Society of Mechanical Engineers Series B   60 ( 574 )   2171 - 2175   1994

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    DOI: 10.1299/kikaib.60.2171

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  • HEAT-TRANSFER AND THERMOELECTRIC VOLTAGE AT METALLIC POINT CONTACTS

    PE PHELAN, O NAKABEPPU, K ITO, K HIJIKATA, T OHMORI, K TORIKOSHI

    JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME   115 ( 3 )   757 - 762   1993.8

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  • 水・エタノール2成分蒸気の凝縮における液滴発生機構の不安定解析

    土方邦夫, 中別府修, 深作善郎

    第30回日本伝熱シンポジウム講演論文集   298-300   1993.5

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  • 固体界面における熱起電力

    伊藤衡平, 中別府修, 土方邦夫, 鳥越邦和, Partick E.Phelan

    第30回日本伝熱シンポジウム講演論文集   703-705   1993.5

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  • Theoretical Analysis of Condensation in a Horizontal Tube : Case : Stratified Flow and Complete Condensation

    Hijikata Kunio, Nakabeppu Osamu, Kariya Daisuke, Navrotsky Victor

    Transactions of the Japan Society of Mechanical Engineers. Series B.   59巻 ( 557号 )   255-261 - 261   1993.1

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    Condensation in a horizontal tube initially of pure vapor which completely condenses at the outlet, is theoretically analyzed. The tube interior is divided into three regions : the first is entirely vapor, the second is a thin film region where Nusselt-type condensation occurs, and the last is the tube bottom region where condensate accumulates and flows to the outlet. It is important to estimate the height of the accumulated condensate region to predict the total heat transfer. Therefore, the inlet level of the condensate as variable parameters, as well as two opposite factors, shear stress and gravity, is considered in this third region. Compared with a previous analysis which neglected the gravitational force, the result of this analysis nearly matches the experimental data.

    DOI: 10.1299/kikaib.59.255

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  • 水・エタノール2成分蒸気の凝縮特性

    土方邦夫, 中別府修, 深作善郎

    第29回日本伝熱シンポジウム講演論文集   742-723   1992.5

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  • 金属間点接触における熱伝達と起電力

    P.E.Phelan, 土方邦夫, 中別府修, 伊藤衡平, 大森隆夫, 鳥越邦和

    第29回日本伝熱シンポジウム講演論文集   503-504   1992.5

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  • Condensation Heat Transfer on Finned Tubes with Radial Ridges on the Fin Surfaces. (2nd Report. Theoretical Study).

    HIJIKATA Kunio, WANG Sing Ping, NAKABEPPU Osamu

    Transactions of the Japan Society of Mechanical Engineers Series C   Vol.57 ( No.537 )   1719-1726 - 1726   1991.5

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    Based on extensive experimentation and observation of condensation on finned tubes with radial ridges on the fin surfaces, a model was developed to predict the condensation performance of that tube. Not only the overall condensation performance, but also the local condensation rates were predicted by this model. The predictions accurately coincide with the experimental data. The ridges on the fin surface play an important role in condensation heat transfer enhancement, because the ridges not only extend the thin condensate film area but also promote convective heat transfer in the film.

    DOI: 10.1299/kikaib.57.1719

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  • 大蒸気泡成長過程における蒸発・凝縮現象に関する研究

    中別府修, 森田毅, 小澤由行, 藤家洋一

    第27回日本伝熱シンポジウム講演論文集   589-590   1990.5

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  • Condensation of a binary mixture of vapors in a vertical tube.

    HIJIKATA Kunio, HIMENO Nobuhiro, NAKABEPPU Osamu

    Transactions of the Japan Society of Mechanical Engineers Series C   Vol.55 ( No.518 )   3183-3189 - 3189   1989.10

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    Condensation heat transfer of a nonazeotropic binary R113-R114 vapor mixture in a vertical tube is investigated experimentally and theoretically, for cases of both constant and varying wall temperature along a flow direction. Experimental results show that a minimum temperature difference is required for complete condensation at an outlet of the condenser tube. This temperature difference and the heat transfer coefficients can be accurately predicted by a theory which assumes a well-mixed condition in the condensate, that is, a uniform concentration profile in the condensed liquid. When the fin height is 0.2 mm, augmentation of heat transfer by an inner finned surface occurrs in the liquid film but not in a vapor phase. For both cases of the constant and varying wall temperature, the heat transfer coefficients correlate well when an averaged temperature difference between the wall and the bulk flow is used as a characteristic temperature difference.

    DOI: 10.1299/kikaib.55.3183

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Books

  • Handbook of Calorimetry and Thermal Analysis

    ( Role: Joint author)

    Maruzen  2010.1  ( ISBN:9784621081921

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    Language:Japanese   Book type:Scholarly book

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  • 実践ナノテクノロジー 走査プローブ顕微鏡と局所分光

    ( Role: Joint author)

    裳華房  2005.11 

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  • "'第5版 実験化学講座6 温度・熱,圧力'"

    ( Role: Joint author)

    丸善  2005.7 

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  • Comprehensive Handbook of Calorimetry and Thermal Analysis no.

    ( Role: Joint author)

    John Wiley&Sons  2004.9 

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  • マイクロマシン技術総覧

    ( Role: Joint author)

    産業技術サービスセンター  2003.1 

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  • 熱流体の新しい測定法

    ( Role: Joint author)

    養賢堂  1998.9 

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MISC

  • Microlayer formation characteristics in pool isolated bubble boiling of water

    Tomohide Yabuki, Osamu Nakabeppu

    HEAT AND MASS TRANSFER   53 ( 5 )   1745 - 1750   2017.5

  • Microscale wall heat transfer and bubble growth in single bubble subcooled boiling of water

    Tomohide Yabuki, Osamu Nakabeppu

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER   100   851 - 860   2016.9

  • OS0114 Heat Flux Measurement in Combustion Field by MEMS Sensor on Metal Substrate

    NAKAMURA Yuto, NAGASAKA Keisuke, TUCHIYA Tomohiro, NAKABEPPU Osamu

    2016 ( 22 )   "OS0114 - 1"-"OS0114-2"   2016.3

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    We have studied a heat flux sensing method on an inner wall of a gasoline engine with the MEMS technology to reveal heat transfer mechanism and mitigate a heat loss. The purpose of the study is to develop the heat flux sensor with the MEMS technology, which features fast response, spatial resolution, high accuracy and multi-points simultaneous detection and durable for the engine research. After testing the heat flux measurement method with a MEMS heat flux sensor on Si substrate, a prototype of the MEMS sensor on SUS substrate has been produced. Heat flux measurement experiment in a premixed gas combustion system was conducted with both the Si type and SUS type sensor. Both sensors indicated a similar heat flux trends but an inconsistency in heat flux amount of about two times.

    CiNii Research

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  • OS0113 Calibration Method of MEMS Sensor for Heat Flux Measurement on Interior Wall of Engine

    TSUCHIYA Tomohiro, NAKAMURA Yuto, NAGASAKA Keisuke, NAKABEPPU Osamu

    2016 ( 22 )   "OS0113 - 1"-"OS0113-2"   2016.3

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    We are developing a heat flux sensing method with a MEMS technology on an interior wall of a gasoline engine to reveal heat transfer mechanism and mitigate heat loss. The transient heat conduction method is used to derive the wall heat flux from measured wall surface temperature by a thin film resistance sensor. Here, it is critical to use right values of structure and thermal properties of the sensor in the analysis. The aim of the study is to calibrate the MEMS sensor and the heat conduction model. The calibration of the heat flux measurement system was conducted by deciding the thermal model through comparing given heat flux to the resistance sensor and derived heat flux from the measured resistance temperature. Good agreement between the self-heating and measured heat flux was attempted in a wide frequency and amplitude ranges.

    CiNii Research

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  • G141 Deflection effect in microscopic high speed interferometric temperature imaging technique

    Hosoya Ryosuke, Dejima Kazuhito, Nakabeppu Osamu

    Procee[d]ings of Thermal Engineering Conference   2015   "G141 - 1"-"G141-2"   2015.10

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    The purpose of the study is experimental investigation about measurement error of heat flux by deflection effect in interferometric temperature imaging method. Distortion of the image taken by same lens-camera system as the previous interferometry through water with a temperature gradient was tested. The displacement in the image was 4-24μm with large scatter, and showed a similar tendency to a theoretical expectation. The deflection effect will be confirmed quantitatively and improvement method of the laser interferometer will be studied.

    CiNii Research

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  • F212 Wall heat flux measurement in premixed combustion by MEMS sensor

    NAKABEPPU Osamu, NAGASAKA Keisuke, TSUCHIYA Tomohiro, NAKAMURA Yuto

    Procee[d]ings of Thermal Engineering Conference   2015   "F212 - 1"-"F212-2"   2015.10

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    The purpose of the study is development of a heat flux sensor for measuring heat flux from burnt gas to engine inner wall to improve thermal efficiency of the engine in SIP innovative combustion technology project. The heat flux measurement method, where heat flux is derived through transient heat conduction analysis combining with surface temperature measured with MEMS thin film resistor sensor, was experimentally examined. Heat flux measurement experiment in a butane-air premixed combustion system in a open chamber with the MEMS sensor was conducted. It was confirmed that the sensor and the method can measure 100kW/m^2 level heat flux at 1ms level temporal resolution.

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  • 29pm3-PN-19 MEMS sensor for heat flux measurement on interior wall of engine

    NAKABEPPU Osamu, NAGASAKA Keisuke, NAKAMURA Yuto, Tsuchiya Tomohiro

    2015 ( 7 )   "29pm3 - PN-19-1"-"29pm3-PN-19-2"   2015.10

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    Heat flux measurement method on engine inner wall is required to grasp and improve heat transfer loss of the engine in SIP (Cross-ministerial Strategic Innovation Promotion Program). The purpose of the study is to develop a heat flux sensor for the engine with high temporal, spatial and heat flux resolution by means of the MEMS technology. The heat flux measurement method using surface temperature measurement and transient heat conduction analysis was examined. MEMS thin film resistor temperature sensor was fabricated for preliminary test. Frequency characteristics evaluation of the sensor through numerical simulation showed that thicker substrate should be used to lower available frequency band. Premixed combustion test indicated that the method is usable to heat flux measurement to the combustion system with 1 ms temporal and 13kW/m^2 heat flux resolution.

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  • 10915 Velocity Effect of SPM Removal Performance in Humidity Swing Air Cleaning Method

    NAGASAKA Keisuke, HAGA Tosiyuki, NAKABEPPU Osamu

    2015 ( 21 )   "10915 - 1"-"10915-2"   2015.3

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    Recent progress in the nano technology increases the importance of removal of nano- and submicron- size SPM (Suspended particulate matter). We are studying a humidity swing air cleaning method that remove the SPM by humidifying and dehumidifying air. We observed the SPM captured on an thin metal film by electrostatic method with an SEM and an AFM. The observation showed a tendency in the shape, large particle has rugged shape and small particle has a spherical shape. It was found that the SPM a chemical reaction on the copper film, and reaction marks tell that the SPM is composed of solid particles and liquid particles by almost same ratio. Also we tried to increase removal ratio in humidity swing air cleaning method. The experimental result showed removal ratio was increased by putting a stack of thin horizontal plates after dehumidifier.

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  • A132 Measurement of liquid phase temperature field around a boiling bubble using laser interferometry

    Dejima Kazuhito, Yabuki Tomohide, Hamaguchi Takuya, Nakabeppu Osamu

    Procee[d]ings of Thermal Engineering Conference   2014   "A132 - 1"-"A132-2"   2014.11

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    This study has been investigated characteristics of phase change heat transfer at the liquid-vapor interface around a boiling bubble using laser interferometry. Initially, to evaluate measurement accuracy of the used interferometric temperature measurement technique, a temperature field of water around a heated fine wire was measured and the temperature data was compared to the result of a transient heat conduction simulation. It was indicated that laser interferometry was available for temperature measurement in fast and local heat transfer phenomena such as liquid phase heat transfer in boiling. In the boiling experiment, a temperature field around a spherical bubble growing in the superheated water was measured. Over 80% of heat flux calculated from temperature gradient was measured with an uncertainty of ±30%.

    CiNii Research

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  • Contribution of microlayer evaporation to bubble growth in pool saturated boiling of water

    Tomohide Yabuki, Takuya Saitoh, Osamu Nakabeppu

    ASME 2013 11th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM 2013   2013.12

  • 821 Interferometric Measurement of Temperature Field in Liquid Phase around an Isolated Boiling Bubble

    HAMAGUCHI Takuya, YABUKI Tomohide, NAKABEPPU Osamu

    2012 ( 18 )   301 - 302   2012.3

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    To evaluate liquid phase heat transfer, temperature field of the liquid phase around an isolated boiling bubble was measured using Mach-Zehnder type interferometer. As a result, macroscopic thermal flow field in boiling was observed. However, in the vicinity to the liquid-vapor interface, expected thermal boundary layer indicates evaporative heat transfer was not measured, and the lack of the spatial resolution of the used interferometer was shown. Thus the measurement system was improved to obtain temperature information of thin thermal boundary layer and spatial resolution was improved to 2.75μm/Pix. Finally, a temperature field around the bubble was captured using renewed measurement system, and the measurement of the evaporative heat transfer near the interface was successfully achieved.

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  • H124 Interferometric Measurement of Temperature Field around Isolated Boiling Bubble on MEMS Surface

    Yabuki Tomohide, Hamaguchi Takuya, Nakabeppu Osamu

    Procee[d]ings of Thermal Engineering Conference   2011   191 - 192   2011.10

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    In the present study, we measured liquid phase temperature field during pool boiling with the laser interferometry, and tried to directly evaluate the heat transfer from the liquid to the bubble. The MEMS thermal sensor which can control the bubble generation was used as the heating surface, and the thermal field around the isolated bubble without bubble-bubble interaction was measured. The interferometric method successfully visualized macroscopic thermal field in the liquid phase such as swell of the thermal boundary layer with the bubble growth and the hot wake accompanied by the rising bubble. However the temperature gradient driving the evaporative heat transfer in the vicinity of the interface was not able to be measured due to shortage of the spatial resolution. Two-dimensional thermal fluid analysis demonstrated that the improvement in resolution by one order of magnitude will be required in the future work.

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  • 219101 Interferometric Measurement of Temperature Field around a Boiling Bubble

    HAMAGUCHI Takuya, YABUKI Tomohide, KOBAYASHI Takayuki, NAKABEPPU Osamu

    2011 ( 17 )   499 - 500   2011.3

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    Interferometric temperature measurement around an isolated boiling bubble was conducted for studying heat transfer from liquid phase to the bubble. Finite fringe interferogram was captured with Mach-Zehnder type interferometer and a high-speed camera. Brightness distribution in the interferogram was converted to series wrapped phase image and axisymmetric differential temperature image through wrapped phase image, differential phase image, unwrapped phase image, and differential refractive index image by the Hilbert transform and Abel inversion. The resulted differential temperature image shows that the superheated liquid layer on the heating surface is lifted up and stretched by the growing bubble, and that hot liquid flow is accompanied by departed bubble.

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  • Study on heat transfer mechanism of isolated bubble nucleate boiling with MEMS sensors

    Tomohide Yabuki, Osamu Nakabeppu

    2010 14th International Heat Transfer Conference, IHTC 14   1   515 - 521   2010.12

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Presentations

  • Micro and Nano-Scale Thermal Analysis and Mass Measurement with Cantilever-Type MEMS Calorimeter

    Junichi Ishii, Hiroki Hayakawa, Osamu Nakabeppu

    ICTAC  2012.8  ICTAC

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  • Highly sensitive biochemical calorimeter with MEMS thermopile sensor

    Masataka SAITO, Jun TAKEUCHI, Osamu NAKABEPPU

    Internationarl Conference of Thermal Analysis and Calorimetry (ICTAC)  2012.8  ICTAC

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  • NEW EXPERIMENTAL APPROACH TO BOILING HEAT TRANSFER MECHANISM (MEMS SENSOR AND HIGH-RESOLUTION FAST INTERFEROMETRY)

    Osamu Nakabeppu, Tomohide Yabuki, Takuya Hamaguchi

    Japan-U.S. seminar on Two-Phase Flow Dynamics  2012.6 

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  • Air Cleaning Method with Humidity Swing Operation for Reducing Suspended Particulate Matters

    Nagisa ONODA, Osamu NAKABEPPU

    AJTEC2011  2011.3  ASME-JSME

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  • HEAT TRANSFER CHARACTERISTICS OF ISOLATED BUBBLE NUCLEATE BOILING OF WATER AT LOW WALL SUPERHEAT

    Tomohide YABUKI, Osamu NAKABEPPU

    AJTEC2011  2011.3  JSME-ASME

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  • Variation in size distribution of suspended particulate matters in air with humidity swing operation

    Nagisa ONODA, Osamu NAKABEPPU

    IMECE2010  2010.11  ASME

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  • Study on heat transfer mechanism of isolated bubble nucleate boiling with MEMS sensors

    Tomohide YABUKI, Osamu NAKABEPPU

    The 14th International Heat Transfer Conference IHTC14  2010.8 

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  • マイクロマニピュレータ用メニスカスチップの研究

    加藤達彦

    日本機械学会関東支部第16期総会講演会  2010.3  日本機械学会関東支部

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    キャピラリ管を先鋭化し,先端部に微小ヒータを設置したメニスカスチップを開発し,先端部の濡れを制御することで微小物体の付着,分離をコントロールできることを示した.

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  • MEMSカンチレバーを用いた高速・高感度熱分析

    杉本拓也, 宮川幸弘

    日本機械学会関東支部第16期総会講演会  2010.3  日本機械学会関東支部

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    微小なカンチレバー型熱分析プローブを開発し,微量物質の高速・高感度熱分析と微量質量分析に関して報告した.

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  • 高感度MEMSサーモパイルセンサを利用したバイオカロリメトリの研究

    山本昌弘, 竹内淳

    日本機械学会関東支部第16期総会講演会  2010.3  日本機械学会関東支部

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    MEMS技術で製作した高感度サーモパイルセンサを利用したバイオカロリメトリの高感度化を研究している.微量な酵母菌の増殖過程が明確に計測されたことを報告.

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  • MEMSセンサを用いた核沸騰熱伝達機構の研究(孤立蒸気泡下のミクロ液膜厚さの評価

    矢吹智英, 濱口拓矢

    日本機械学会関東支部第16期総会講演会  2010.3  日本機械学会関東支部

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    蒸気泡を発生させる電解トリガーと微小薄膜熱電対を集積したMEMSセンサにより沸騰熱伝達のメカニズムを実験的に調べた.気泡底部の温度変動を計測し,基板内の非定常熱伝達解析を行うことで,気泡への熱伝達過程が明確に示された.

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  • Removal of Suspended Particulate Matters by Humidity Swing Operation for Air-Cleaning Method

    Nagisa ONODA, Osamu NAKABEPPU

    2nd Micro/Nanoscale Heat & Mass Transfer International Conference  2009.12 

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  • APPROACH TO HEAT TRANSFER MECHANISM BENEATH BOILING BUBBLE WITH MEMS SENSOR

    Tomohide YABUKI, Osamu NAKABEPPU

    2nd Micro/Nanoscale Heat & Mass Transfer International Conference  2009.12 

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  • 湿度操作による空気中の浮遊微粒子の除去

    小野田渚

    日本機械学会熱工学コンファレンス  2009.11  日本機械学会

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    空気に加熱加湿と冷却除湿を行う湿度操作を行い,浮遊微粒子を除去する基礎研究に関して報告した.

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  • MEMSセンサを用いた核沸騰熱伝達機構の研究(孤立気泡領域における熱伝達機構)

    矢吹智英

    日本機械学会熱工学コンファレンス  2009.11  日本機械学会

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    気泡トリガーと薄膜熱電対を集積したMEMSセンサを用いた沸騰熱伝達機構の実験的解明を報告.気泡成長には約50%が基板からの熱伝達で賄われていることが示された.

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  • SThMによる熱伝導率計測法の性能評価

    大崎哲史

    第30回日本熱物性シンポジウム  2009.10  日本熱物性学会

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    原子間力顕微鏡AFMに温度計測機能等を集積したカンチレバープローブを組合せた走査型熱顕微鏡による局所熱伝導率計測に関する研究を報告した.

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  • 湿度操作による空気中の浮遊微粒子除去効果

    小野田 渚

    第1回マイクロ・ナノ工学シンポジウム  2009.10  日本機械学会マイクロ・ナノ専門会議

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    空気を加湿・除湿する湿度操作を行うことで,浮遊粒子状物質の除去を行う空気清浄法に関して報告した.

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  • マイクロマニピュレータ用メニスカスチップの研究

    加藤達彦

    第1回マイクロ・ナノ工学シンポジウム  2009.10  日本機械学会マイクロ・ナノ専門会議

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    微小な物質を把持,移動,設置するマイクロマニピュレーションを効果的に行うため,先端部の濡れを熱的に制御するメニスカスチップを提案し,その動作を確認した.

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  • 核沸騰熱伝達機構研究用MEMSセンサ

    矢吹智英, 濱口拓矢

    第1回マイクロ・ナノ工学シンポジウム  2009.10  日本機械学会マイクロ・ナノ専門会議

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    薄膜熱電対,気泡トリガーを集積した沸騰熱伝達機構を実験的に調べるMEMSセンサについて報告を行った。

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  • MEMS技術を用いたカンチレバー型カロリメータ

    杉本拓也, 宮川幸弘

    第1回マイクロ・ナノ工学シンポジウム  2009.10  日本機械学会マイクロ・ナノ専門会議

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    熱電対,ヒーター,サーモパイル等を集積したカンチレバー型カロリメータに関する報告を行った。

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  • カンチレバー型カロリメータへの空気の影響評価

    杉本拓也

    第45回熱測定討論会  2009.9  日本熱測定学会

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    熱電対,ヒーター,サーモパイル等を集積したカンチレバー型カロリメータに関し,空気の影響を報告を行った。

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  • MEMSサーモパイルセンサによる示差式バイオカロリメータの開発

    山本昌弘

    第45回熱測定討論会  2009.9  日本熱測定学会

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    MEMSサーモパイルセンサを2つ使用した示差式のバイオカロリメータの開発に関して報告した。

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  • 小型カンチレバーによる共振質量計測法の開発

    宮川幸弘, 杉本拓也

    日本機械学会2009年度年次大会  2009.9  日本機械学会

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    熱電対,ヒーター,サーモパイル等を集積したカンチレバー型カロリメータにより,共振を利用した微量質量計測に関して報告を行った。

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  • ナノワット級代謝熱計測のための示差型バイオカロリメータの開発

    山本昌弘

    日本機械学会2009年度年次大会  2009.9  日本機械学会

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    示差式バイオカロリメータの高感度化を行いナノワット級の発熱計測を試みた。

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  • Boiling Heat Transfer Study with MEMS Sensor

    Tomohide YABUKI

    the 4th International Symposium on Mechanics, Aerospace and Informatics Engineering (ISMAI4)  2009.9  明治大学機械工学専攻,韓国慶尚大学校機械工学科

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  • Meniscus tip for needle type micromanipulator

    Tatsuhiko KATO

    the 4th International Symposium on Mechanics, Aerospace and Informatics Engineering (ISMAI4)  2009.9  明治大学機械工学専攻,韓国慶尚大学校機械工学科

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  • Thermal Analysis and Resonance Mass Measurement with Micro-Cantilever

    Takuya SUGIMOTO, Yukihiro MIYAGAWA

    the 4th International Symposium on Mechanics, Aerospace and Informatics Engineering (ISMAI4)  2009.9  明治大学機械工学専攻,韓国慶尚大学校機械工学科

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  • Application of MEMS sensor to thermal science and engineering

    the 4th International Symposium on Mechanics, Aerospace and Informatics Engineering (ISMAI4)  2009.9  明治大学機械工学専攻,韓国慶尚大学校機械工学科

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  • 湿度操作による空気清浄の研究(第2報:除湿に伴う微粒子除去効果の解析)

    小野田渚

    第46回日本伝熱シンポジウム  2009.6  日本伝熱学会

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  • MEMSを用いた複合熱分析法の研究

    杉本拓也, 宮川幸弘

    第46回日本伝熱シンポジウム  2009.6  日本伝熱学会

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  • MEMSセンサによる核沸騰熱伝達機構の研究(温度制御性の改良と熱流評価手法の検討)

    矢吹智英

    第46回日本伝熱シンポジウム  2009.6  日本伝熱学会

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  • 湿度操作による空気清浄の研究(第1報:浮遊微粒子の粒径分布変化)

    小野田渚

    第46回日本伝熱シンポジウム  2009.6  日本伝熱学会

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Awards

  • 日本機械学会賞

    2015.4   日本機械学会   キャピラリー力の熱的制御を用いた付着式マイクロマニピュレータの研究

    中別府修, 加藤達彦, 新谷昌之

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  • 日本機械学会熱工学部門講演論文表彰

    2012.3   日本機械学会熱工学部門   Heat Transfer Characteristics of Isolated Bubble Nucleate Boiling of Water

    矢吹智英, 中別府修

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    Award type:Award from international society, conference, symposium, etc. 

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  • 日本機械学会賞

    2009.4   日本機械学会   MEMSセンサによる核沸騰熱伝達機構の研究(第1報,気泡底部の局所温度計測)

    中別府修, 古川雄太

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    Award type:International academic award (Japan or overseas) 

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  • 日本伝熱学会賞

    2007.5  

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  • 科学技術分野の文部科学大臣表彰 若手科学者賞

    2005  

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  • 2002 International SFT (Societe Francaise de Thermique) Award

    2002.1  

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  • Tokyo Tech Award for Challenging Research

    2002.1  

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  • 米国機械学会熱工学部門最優秀論文賞

    1997.11  

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  • 日本機械学会奨励賞

    1997.5  

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Research Projects

  • Development of MEMS heat flux and ion current sensor for measuring flame wall interaction

    Grant number:23K03699  2023.4 - 2026.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Grant amount:\4680000 ( Direct Cost: \3600000 、 Indirect Cost:\1080000 )

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  • Measurement of local heat transfer and estimation of near wall adection velocity by multi-points thin film temperature sensor

    Grant number:20K04316  2020.4 - 2023.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Grant amount:\4420000 ( Direct Cost: \3400000 、 Indirect Cost:\1020000 )

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  • Development of nanowatt class bio-calorimeter for individual activity analysis

    Grant number:17K06211  2017.4 - 2021.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    Nakabeppu Osamu

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    Grant amount:\4810000 ( Direct Cost: \3700000 、 Indirect Cost:\1110000 )

    This study aimed to develop a nano-watt grade bio-calorimeter which measures the metabolic heat of a single individual bio sample. Following three development has been performed, improvement of sensitivity of the heat sensor with the MEMS technology, a noise reduction of the amplifier circuit with four parallel instrumentation amplifiers, and improvement of stability of a four layer thermostatic chambers with a digital PI control technique.
    As a result, it was shown that the growth process of yeast and the hatching process of a single egg of brine shrimp can be measured continuously for more than 100 hours, and the heat of metabolism can be measured in the range of 10 nano-watt level to 10 miro-watt level.

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  • A Study on Multi-Hierarchical Structures of Turbulent Premixed Flame by Multi-Dimensional Combined Laser Diagnostics and GPU-Cloud DNS

    Grant number:23226005  2011.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (S)

    Miyauchi Toshio, NAKABEPPU OSAMU, TANAHASHI MAMORU, SHIMURA MASAYASU, FUKUSHIMA NAOYA

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    Grant amount:\209950000 ( Direct Cost: \161500000 、 Indirect Cost:\48450000 )

    Practical combustors are operated in conditions of high Reynolds numbers and high pressure, and turbulent flame structures generated by hierarchical structure of turbulent flows dominate characteristics of turbulent combustion. In this research project, structures of turbulent premixed flames in high pressure and high Reynolds number conditions are investigated by DNS with parallel GPU cloud and by multi-dimensional combined laser diagnostics. Based on the characteristics of turbulent flame structures, an SGS combustion model has been developed and LES of turbulent combustion has also been established.

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  • Removal of Suspended Particulate Matters and Gaseous ChemicalSubstances with Humidity Swing Method

    Grant number:22656054  2010 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    NAKABEPPU Osamu

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    Grant amount:\3650000 ( Direct Cost: \3200000 、 Indirect Cost:\450000 )

    The air cleaning effect with humidity swing method was studied. In the method, the suspended particulate matters (SPM) of nano- to micrometer size and the gaseous chemical substances are removed from the air through a thermal humidification and dehumidification process of the air. The air cleaning effect and required electric energy were experimentally studied. The SPM removal effect of about 80 % was shown in the experiment under low air flow rate of 3 L/min with plate fin type heat exchangers at absolute humidity swing of 0.2 kg/kg. For the chemical substances removal effect, it was shown that about55 % of ammonia can be removed under inlet condition of 670 ppm. It was also demonstratedthat the electric power can be reduced to 1/8 with introducing a heat pump system.

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  • Development of Nano-Thermal Analysis System with MEMS Technology

    Grant number:20360103  2008 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    NAKABEPPU Osamu

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    Grant amount:\19500000 ( Direct Cost: \15000000 、 Indirect Cost:\4500000 )

    This project aimed to develop a combined nano-calorimetry system by combining the nano-calorimeter fabricated with the MEMS technology with SEM(Scanning Electron Microscope) or EDXS(Energy dispersive X-ray Spectroscopy). The nano-thermal analysis system has excellent analysis performance in mass and exo-or endothermic reaction measurement with visualization function for nano to microgram sample.
    Following three techniques have been studied. Minute mass measurement method with mechanical resonance of the micro-cantilever type calorimeter, combination method between the nano-calorimetry and SEM observation, and micromanipulation method for handling the nano-gram level samples.
    Following results to the mass and thermal analysis of micro-to nano-gram level metal and non-organic samples have been obtained. The cantilever type calorimeter of 260 to 800 micro-meter length with thermal devices such as thermocouple, heater and thermopile was developed with the MEMS technology. Fast temperature scan of 1000 Kelvin per second order is available. Thus, the calorimeter is sensitive to faint exo-and endothermic reaction. The developed calorimeter also can be used in DTA(Differential Thermal Analysis) and DSC(Differential Scanning Calorimetry) modes.
    As for the mass measurement technology, built-in strain gage detection method has been developed for detecting the mechanical resonance of the nano.calorimeters as well as an optical detection method. The auto-resonance system for the nano-calorimeter was developed with high compactness by the strain gage method and a positive feedback circuit. It was demonstrated that mass and thermal analysis of less than 1 microgram sample ranging from room temperature to 800 degree Celsius are available with the developed system.
    In the combined nanocalorimetry with the SEM, the compact mass and thermal analysis system was introduced into the compact type SEM of low acceleration voltage type. It was demonstrated that the nanocalorimetry can be performed with observing the sample shape with sub-micrometer resolution. Moreover, another combined analysis investigating chemical species of sample surface is available by using the EDXS with the nanocalorimeter.
    The micro-manipulation is also important topics for the nanocalorimetry. This research demonstrated controllability of adhesion force between a needle type manipulator and micro-sample with thermal method. In this method, the amount of water on the manipulator tip is controlled with spreading water from capillary in the manipulator and evaporation with heating the tip. As a result, the adhesion force can varies from 1 to 10 micro-Newton level. The possibility in the thermal adhesion control was demonstrated.

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  • Air cleaning with humidity swing method

    2007

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    Grant type:Competitive

    Removal of suspended particulate matters in the room air is investigated with a humudification and dehumidification process.

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  • Micromanipulation with thermal control of adhesive force

    2007

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    Grant type:Competitive

    In the micromanipulation, control of adhesive force is key issue since it exceeds the gravitational force. Pick up and place of a micro object are experimentally studied with thermally controlling the amout of small meniscus between the objective and the manipulator.

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  • Study on nano-scale thermophysical properties measurement method with Scanning Thermal Microscope

    Grant number:17360094  2005 - 2007

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    NAKABEPPU Osamu

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    Grant amount:\11370000 ( Direct Cost: \10800000 、 Indirect Cost:\570000 )

    This research aims to develop the local thermal conductivity measurement method with nano-scale spatial resolution on the scanning thermal microscope. With fabricating the multi-functional micro cantilever probe, its performance has been experimentally examined. The cantilever has 2 micron thick and 600 micron long body of SiO2, and five thermal devices on it. There is electrode of contact thermocouple at the end of the probe for detecting the contact temperature, Pt thin film heater for calibrating heat flow sensor next, thermopile sensor for detecting heat flow along the cantilever, thin film thermocouple for measuring cantilever body temperature and another heater for controlling the body temperature near Si base plate. For the local thermal conductivity measurement with high-accuracy, it is required to measure the contact thermal conductance and the contact temperature simultaneously with high accuracy. The cantilever probe developed in the research enable to calibrate the thermopile heat flow sensor with known heating of the Pt heater, and to identifying thermoelectricmotive force of the thin film thermocouple by using temperature dependency of the heaters. Improvement in accuracy was conducted by eliminating the common ambiguity of the micro-fabricated sensors and introducing the self-calibration functions. It can lead the improvement in thermal conductivity measurement.
    Following results were obtained by attaching the cantilever probe on the SThM based on the AFM and operating under vacuum condition of below 10^<-4> Pa. The active thermometry, where thermal feedback compensates temperature difference between the cantilever and sample, can be available with higher sensitivity than a previous thermometry probe. Thermal conductance imaging with high spatial resolution can be also available by constantly heating the Pt heater near the tip and monitoring the heat flow from the probe to the sample with the thermopile sensor. Furthermore, the contact temperature is measured with the contact thermocouple at the tip by contacting the probe with the sample coated with gold thin film. It shows that the simultaneous measurement of the thermal conductance and the contact temperature is possible and allows the quantitative local thermal conductivity measurement with the SThM.

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  • On boiling heat transfer mechanism with MEMS sensor

    2004

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    Grant type:Competitive

    "Heat transfer mechnism of nucleate boiling under isolated bubble growth condition is studied with the MEMS sensor, which includes integrated multiple thin film thermocouple. Detailed temperature measurement beneath boiling bubble was conducted. Through transient heat conduction analysis of the heating wall with the measured temperature variation, local and transient heat transfer from the wall was clarified."

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  • Metabolism monitoring with MEMS sensor

    Grant number:18651055  2003 - 2008

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    Grant type:Competitive

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  • 気泡ポンプを内蔵したマイクロヒートパイプの開発

    Grant number:15760128  2003 - 2004

    日本学術振興会  科学研究費助成事業  若手研究(B)

    中別府 修

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    Grant amount:\3700000 ( Direct Cost: \3700000 )

    液相内の蒸気相界面に空間的曲率差が存在すると,表面張力効果により,蒸気相重心の移動や蒸発凝縮を伴う蒸気相内部での蒸気輸送が生じる.本研究では,この蒸気泡ポンプ効果を効果的に利用するマイクロループヒートパイプの開発を目的とし,マイクロチャンネルプレートを積層したループヒートパイプを試作し,その流動伝熱特性を調べた.
    プレートには,長さ76mm,幅19mm,厚さ0.2〜0.25mmのSUSプレートにレーザー貫通加工で最小流路幅250μm,最大流路幅2mmの面内ループを形成したもの,同長,同幅,厚さ0.3mmのPETプレートに最小流路幅4mm,最大流路幅15mmの面外ループを形成するものの2種類を準備した.
    エタノールを冷媒とし,水平設置条件でループヒートパイプの動作実験を行った.結果として,面内循環式のSUSプレートを用いた場合,積層厚さ0.4〜2.6mmの範囲内では,厚さ2.1mmにおいて熱輸送量が最大となり,最大熱輸送量が9.7Wおよび熱伝導率550W/mK(@ΔT=13.2K)を記録した.また,熱輸送量が限界に達すると加熱部でドライアウトが生じ,急速に熱輸送性能が低下する現象が見られた.
    面外循環式のPETプレートを用いた場合,積層厚さ1.8mmで良い性能を発揮し,等価熱伝導率500W/mK,最大熱輸送量12.8W(@ΔT=34.2K)を記録した.また,実験範囲内ではドライアウトは観察されず,耐熱温度の高い部材の利用で,さらに高い性能が期待される.
    さらに,循環流と熱抵抗によるループヒートパイプの熱輸送モデルを構築し,解析を行った結果,加熱部と冷却部の熱抵抗を低減することで,さらなる熱輸送性能の向上が期待できることが示された.

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  • Nano calorimetry

    2003

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    Grant type:Competitive

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  • 高密度発熱体の自律冷却を行う蒸気泡駆動型マイクロチャンネル除熱システム

    Grant number:13750167  2001 - 2002

    日本学術振興会  科学研究費助成事業  若手研究(B)

    中別府 修

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    Grant amount:\2200000 ( Direct Cost: \2200000 )

    テーパー構造を持つサブミリスケールの内径の流路内で液体が加熱により発泡すると,気泡は表面張力効果により,径の広がる方向へ移動し,このとき,同時に周囲の流体を径の広がる方向へ移動させるポンプ効果を示す.本研究では,高密度発熱体の効果的な冷却を行うための,この蒸気泡ポンプを内蔵した熱輸送デバイスの開発を目的とし,シリコン微細加工で製作したスロート部20μmから160μmの幅のマイクロポンプで蒸気泡駆動マイクロポンプの特性を実験的に調べ,その結果を用いて,熱輸送デバイスの試作,評価を実施した.
    シリコンマイクロポンプの実験では,スロート径40μm,水を作動流体とし,ポンプ部の過熱度20℃の場合,最大圧力4150Pa,最大流量147μl/minの性能が実験的に示された.また,加熱部の壁面はドライアウトした状態で,スロート付近の気液界面から冷却部付近の気液界面へ蒸気が輸送されていることが観察された.
    上記知見をもとに,複数の細いマイクロチャンネルがより太いチャンネルへ連結するポンプ構造を考案し,シリコン基板にループ状の流路を造り込んだ蒸気泡駆動型熱輸送デバイスを試作した.最狭チャンネル幅は50μm,除熱部チャンネル幅は200μm,蒸気流路幅を2mmとし,作動流体に水およびエタノールを用い熱輸送特性を実験的に調べた.結果は,気液界面の分布がデバイスの性能に強く影響し,気液界面が加熱部付近に存在し,蒸気相が冷却部付近まで広がる状態が熱輸送に最適であることが判明した.また,試作デバイスでは,固体熱伝導による熱輸送の60%に相当する内部流動による熱輸送効果が確認された.

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  • Development of Scanning Thermal Microscope with Microscale Quantitative Temperature Measurement Function.

    Grant number:13555051  2001 - 2002

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    NAKABEPPU Osamu, SHIRAKAWABE Yoshiharu

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    Grant amount:\7400000 ( Direct Cost: \7400000 )

    Scanning Thermal Microscope (SThM) provides topological and thermal images by a temperature sensing cantilever probe. Usually, the SThM passively measures temperature or thermal properties by detecting thermal information through a contact point on a sample and converting it with a calibration curve. However, the passive method can't take quantitative temperature image because measured values are influenced by various factors such as surface temperature, thermal properties, unevenness of sample surface, adsorption layer, and so on. Therefore, we have developed a novel active method for quantitative temperature imaging regardless of variations in thermal conductance at the contact point. In the active method, a thermal feedback control step maintains the cantilever at the same temperature as the sample surface by detecting heat flow along the cantilever and feeding power proportional to it to the cantilever, then cantilever temperature is measured by another sensor on it. We experimentally examined the active method by producing multi-function cantilevers with a heat flow sensor, electric heater and a temperature sensor and a feedback circuit. The active system demonstrated good performance in real temperature measurement regardless of thermal

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  • Energy Transfer Characteristics at the Interface between Thin Film and Substrate

    Grant number:11650210  1999 - 2000

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    INOUE Takayoshi, SUZUKI Yuji, NAKABEPPU Osamu

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    Grant amount:\3600000 ( Direct Cost: \3600000 )

    Heat transport characteristic of an interface between thin film and solid has been an attractive problem in both thermal engineering and thermal science. Recent progress of micro-fabrication techniques makes it possible to reduce the size of electric devices or sensors dramatically and this downsizing causes a large heat generation at local areas. Therefore, how to remove the heat generated from hot spots becomes an important problem, in terms of the lifetime and reliability of the devices and also it may be essential for developments of high performance sensors. As heat conduction is the predominant mechanism in microscale heat transfer, thermal boundary resistance between thin film and substrate, R_<bd>, plays an important role in the heat removal process. However, although theoretical models for the resistance in the range of low temperature region, under about 30 K, are developed, the resistance in the room temperature region has not been well examined.
    For the measurement of the thermal boundary resistance, we usually add a laser heating to a thin film and observe a response of the film temperature. As the response is very quick, usually in the order of micro second, we must adopt a measurement technique with high time resolution. Reflectance thermometry is one of the most suitable technique for it This technique is based on the fact that a reflectivity of films varies with the film temperature. For a calibration of thermo-reflectance coefficients, C_<TR>, we applied the 3 ω method. By comparing the experimental result with time responses of film temperature in heat conduction simulations, we can obtain the value of the thermal boundary resistance.
    The main results obtained in this research are as follows.
    (1) The 3 ω method is effective for the measurement of thermo-reflectance coefficients and the coefficients of a gold film and a platinum one on glass substrates are obtained as -4.15x10^<-5> [1/K] and -3.51x10^<-5> [1/K], respectively.
    (2) The thermal boundary resistances between Pt and Au films and glass substrate are 5.0x10^<-7> [m^2K/W] and 1.0x10^<-6> [m^2K/W], respectively.

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  • 結晶成長における非平衡性・異方性とメゾスケール形態予測シミュレーション

    Grant number:11750156  1999 - 2000

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    中別府 修

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    Grant amount:\2200000 ( Direct Cost: \2200000 )

    結晶の成長形には,ファセット状やデンドライト状などいろいろな形態があり,その複雑かつ秩序ある形態の形成機構は,温度・濃度場,形態と過冷度の関係,異方性,非平衡性を考慮し大規模な数値計算(フェーズフィールドモデル,PFM)を行うことで解明されつつある.本研究では,実在物質の結晶成長形態を説明,予測するために,実験的に凝固界面の熱的・組織的過冷度,結晶の成長方向と凝固速度の関係(界面カイネティクス)を精密に計測し,非平衡性・異方性を数値化し,この新しい物性値を利用したPFM計算を行った.
    結晶の成長速度を実測するには,移動式,および温度可変式の方向性凝固装置を製作し,界面過冷度が大きなザロール等のファセット凝固を示す物質から,界面過冷度の小さなスクシノニトリル,水等のノンファセット凝固を示す物質まで計測を行った。結果として,単位界面過冷度当りの結晶成長速度として,ザロールでは,<100>方向に5.28μm/s・K,<101>方向に1.80μm/s・Kの値が測定され,水では<0001>方向に71μm/s・K,<1120>方向に380μm/s・Kの値が測定された。
    特定の結晶方位に対して実測された成長速度を元に,結晶の対称性と結晶面内の分子数と成長速度の関係を考慮し,方位と成長速度の関係をモデル化し,PFMによる結晶成長シミュレーションを行った。二次元結晶成長シミュレーションの結果,ザロールを模擬したケースでは,実在結晶と同様のファセット凝固が再現され,また,水のc軸を含む面内の結晶成長を模擬したケースでは,A軸方向に優勢に成長が進むファセット状の凝固様式が再現された。c軸に垂直な面内のシミュレーションでは,6回対称性を持つ強度5%の異方性を導入した場合に,実在結晶の特徴を示すシミュレーション結果が得られた。
    本研究により,界面カイネティクス情報を何らかの手段により特定することで,PFM等によるシミュレーションで,結晶成長を予測可能であることが示された。

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  • Development of Microchannel Heat Exchanger for Refrigeration

    Grant number:09555071  1997 - 1999

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    SUZUKI Yuji, TAKAGI Shu, NAKABEPPU Osamu, INOUE Takayoshi, EBISU Takeshi

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    Grant amount:\13600000 ( Direct Cost: \13600000 )

    An experimental study on two-phase flow, nitrogen gas and water (or glycerin solution), in microchannels has been conducted to investigate characteristics of fluid flow and heat transfer. An array of 25 parallel microchannels was fabricated on a stainless steel plate by electric discharge machining process. Dimensions of the microchannel are 209 μm high, 212μm wide and 9.96 mm long. Pressure drop across the channels was measured and flow behavior was simultaneously recorded with a high speed video camera. Temperatures of the wall and fluid were measured to determine heat transfer coefficients at the channel surface. The results show that the Chisholm's parameter C for two-phase flow in microchannels is smaller than that in conventional-sized channels and the parameter was well correlated with the flow patterns in case of nitrogen gas and water. Nusselt numbers obtained in single-phase experiments agree approximately with Peng and Peterson's experimental results. In two-phase experiments, heat transfer was enhanced with the stirring effect by gas flow and Nusselt number reaches twice as large value as that in liquid single-flow.
    Flow and thermal characteristics of a new type of microchannel heat exchanger were examined experimentally concerning the both cases of single and two phase flow. The heat exchanger is composed by laminating thin stainless-steel plate of 200μm thickness with microchannels of 250μm width, and other plate with manifolds (i.e. header & footer) alternately. The microchannel heat exchanger was shown to have higher overall heat transfer coefficient than that of conventional heat exchangers. The performance of the microchannel heat exchanger in liquid phase region was shown to be predicted by the characteristics of laminar flow. In case of boiling of working fluid, large pressure drop appeared for a few bubbles but rapid increase of heat transfer rate was not observed until hard boiling.

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  • ウェーブレット解析による非定常非線形応答の熱流体場多変量同時計測への応用

    Grant number:09750214  1997 - 1998

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    中別府 修

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    Grant amount:\2500000 ( Direct Cost: \2500000 )

    本研究では,細線プローブに周波数1ωの交流を印加し非線形効果により生じる3倍高調波成分から流体の熱物性値を計測する3ωとプローブにステップ的に電圧を印加しプローブの温度応答から熱物性値を計測する非定常細線法を組み合わせ,さらに,得られた信号をウェーブレット分解し各周波数成分の持つ情報と非定常信号の持つ情報から,流体の各種物性値,物理量を一つのシステムで計測する手法の確立を目的とし,以下の研究を行った.
    3ω法では,直径10μmの白金細線プローブ,抵抗の変化を検出するブリッジ回路,差動アンプ,ロックインアンプで構成された計測システムで,水,エタノール,空気等の静止流体に対して熱伝導率,温度伝導率の計測実験を行い,その性能を確認した.流体への3ω法の適用には定常加熱成分が誘起する自然対流の影響を正しく評価することが必要であり,計測値が理論値よりずれる点を整理し,また,数値シミュレーションを行うことで,自然対流強さと印可電圧周波数の関係として,その適用可能条件を明らかにした.
    また,細線プローブに単一周波数1ωの交流電圧をステップ状に印加し,印加直後から定常状態に至る全時間領域の1ω応答および非線形効果から現れる3倍高調波3ω応答をデジタルオシロスコープで記録し,ウェーブレット時間周波数解析プログラムを開発・使用することで,直流加熱に対する応答と2ωの発熱に対する応答を同時に取り出す試みを行った.直流加熱に対する応答および,2ω発熱に対する応答の両方から熱伝導率を求めることは可能であったが,ウェーブレット解析では,厳密には必要な周波数成分が分離できないため,3ω法だけを使用した場合の精度と比べ,計測精度の向上は達成されなかった.

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  • マイクロカンティレバーを用いた超高感度熱流束測定法の開発と薄膜蒸着過程への応用

    Grant number:09650228  1997 - 1998

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    井上 剛良, 中別府 修

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    Grant amount:\3700000 ( Direct Cost: \3700000 )

    近年の半導体産業における加工技術の目覚ましい進歩により、マイクロからナノスケールの加工が可能となり、これに伴って微小スケールにおける温度分布等の熱流体場の測定が重要となってきている。本研究では原子間力顕微鏡(AFM)に用いられる微小なマイクロカンティレバーをセンサープローブとし、このカンティレバーのたわみを光てこ法や抵抗変化を用いて検出することにより、高感度、高空間分解能で応答速度の速い温度・熱流束測定法を開発し、これを真空蒸着過程へ適用することにより金属分子線の熱流束や分子線強度の測定を行い、分子線強度が凝縮係数に及ぼす影響を明らかにすることを目的としている。
    本年度は,AFMのマイクロカンティレバーを利用したバイマテリアルマイクロカンティレバーおよび圧電性結晶からなるピエゾレジスティブレバーを用いて温度や熱流束の計測を行った。
    1. バイマテリアルカンティレバーを用いた計測システムの分解能は10^<-3>K、1μW、時定数は10msec程度であることを示した。
    2. ピエゾレジスティブレバーを用いることにより光てこ方式に較べて格段にシンプルな微小温度計測システムを構築することが可能であることを示した。この場合の計測システムの分解能もやはり10^<-3>K、1μW、時定数は10msec程度であることを示した。
    3. 噴流の質量流速によりピエゾレジスティブレバーが撓むことを確認し、この効果を用いて噴流の速度分布を測定できることがわかった。
    今後は、ピエゾレジステイブレバーに金属薄膜を蒸着することによりバイマテリアル効果を付加することにより、より高感度な熱流速計測を行う予定である。

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  • Development of velicity selector for metal atom and its application in thermal engineering

    Grant number:08555051  1996 - 1997

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    INOUE Takayoshi, ITO Hiroki, SUZUKI Yuji, NAKABEPPU Osamu

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    Grant amount:\4200000 ( Direct Cost: \4200000 )

    To study the control of the thin film condensation process with the translational energy of incident atom, crystalline structures of Bi_2Te_3 films and Bi, Te films, which are deposited on (001) NaCl, (001) MgO and glass by the vacuum deposition method with a Hostettler-Bernstien velocity selector, have been investigated by measurement thermoelectric power of film and the observation by a transmission electron microscopy. Thin films are affected by not only substrate temperature but also velocity of incident atoms greatly. We could obtain good thermoelectric element when we made films at a certain substrate temperature with velocity selector. However we could not clarify the effect of incident frequency on the deposition process, because it is difficult to conduct experiments at the high incident frequency with a velocity selector. Thus a molecular dynamics simulation has been performed to investigate the effects of incident velocity, substrate temperature and frequency of incident on the condensation phenomena in the deposition process of Kr atoms on Ar substrate. Substrate temperature and velocity of incident atom are affect the growth rate of nucleation and reevaporation of deposited atoms. Further those affect the structure of deposited film in the simulation. At high substrate temperature structure of thin film is broken, however at a certain substrate temperature, small incident velocity and low incident frequency, crystals grow with characteristic anisotropy on the substrate.

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  • Effect of microscopic interfacial structure on gas-liquid two phase flow and application for flow control.

    Grant number:08455088  1996 - 1997

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    MATSUMOTO Yoichiro, MATSUI Jyun, TAKAGI Syu, NAKABEPPU Osamu, ICHIKAWA Yasumasa, MARUYAMA Shigeo

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    Grant amount:\8800000 ( Direct Cost: \8800000 )

    Transport phenomena of mass, momentum and energy at gas liquid interface is most important basis for gas-liquid two phase flow and various drastically with interface condition. For example, it is known that additon of surfactant gives large influence on whole flow structure of bubbly flow which includes numbers of bubbles in liquid by preventing coalition and reducing rising velocity of bubbles. The purpose of this research is to clarify relation between bulk concentration of surfactant existing liquid and interfacial structure, and quantitative analysis of influence of impurity on macroscopic flow dynamics of two phase flow. Experiment of rising bubble in stationaly liquid by using ultra pure water and surfactant solution of known concentration, and simulation of rising bubble by using Navier-Stokes equation coupled with Marangoni effect were conducted to investigate mechanism of basic interfacial phenomena.
    In the experiment, behavior of the rising bubble was investigated by generating small single bubble of 50mum to 1mm in radius in stationary water. Relation between Reynolds number and drag coefficient for rising bubble in the ultra pure water was confirmed to be same as one derived from theory for pure liquid. Moreover, it was observed that addition of small amount of 3-pentanol into pure water reduces rising velocity significantly.
    In the numerical simulation, effect of surfactant on drag of rising bubble was analyzed for undeformable spherical bubble by adopting absorption model of Henry type or Langmuir type and by using orthogonal curvilinear coordinate system along bubble interface. As a result of numerical simulation, it was demonstrated that drag of the rising bubble can remarkably increase by Marangoni effect for even small amount of surfactant, and that the Marangoni effect becomes important with Reynolds number for bubbles having same diameter and same terminal velocity. Further, the simulation shows separating vortices associated with secondary vortices behind the bubble rising in surfactant solution, never observed in pure water.

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  • 液相成長する氷晶のナノ・マイクロスケール構造の解明

    Grant number:08750225  1996

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    中別府 修

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    Grant amount:\1000000 ( Direct Cost: \1000000 )

    本研究では、氷晶の形態,特性をサブミリからナノメータスケールに渡る広いダイナミックレンジの計測を行い,マクロに現れてくるセルラ-氷晶やデンドライト氷晶の形態形成機構を解明するため,光学顕微鏡による水溶液の凝固実験と原子間力顕微鏡(AFM)による霜の観察を行った.
    水溶液の凝固実験では,方向性凝固装置と過マンガン酸ナトリウム水溶液の吸光性を利用し,水溶液濃度と氷晶の3次元形態の観察を行った.これにより,5wt%以下の水溶液では,セルラ-状の凝固が起こり,凝固速度が速いほど,氷の間で濃縮される溶質量が増加すること,ある速度以上になると凝固形態に異方性が強く現れ,三角形断面の冷却面を除く一辺が優先的に成長し残りの一辺は殆ど成長しないこと,下面から冷却されているにも関わらず,縦長の三角形氷ができることが観察された.この異方性は,六角柱構造をした氷の結晶構造に由来するものと理解された.
    原子間力顕微鏡による霜の観察は,AFMのカンチレバ-は熱膨張率の異なる2相構造であるため,霜に接触した場合と僅かに離れた場合で熱変形が大きく,アプローチから計測を自動的に行なわせることが難しい,環境の湿度を十分に制御しないと観察中に氷が成長しずぎてAFMの観察範囲を越えてしまうという理由で非常に困難なものであった.僅かに観察された結果は,銅製ステージ上で霜の端が層状に進行し霜領域が拡大していく様子,端部にセルラ-状の構造が見られ,そのスケールは1μm以下であることという点であった.水溶液中でのセルラ-凝固のスケールは10μm以上であり,気相中で生成する氷晶の構造スケールはさらに小さいことが分かった.

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  • Development of Temperature Measurement Method in Micro-Scale Region by using Atomic Force Microscope.

    Grant number:07555069  1995 - 1996

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    HIJIKATA Kunio, HIRASAWA Shigeki, NAKABEPPU Osamu

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    Grant amount:\13300000 ( Direct Cost: \13300000 )

    With a remarkable progress in science and technology, to make clear heat transfer characteristics in a microscopic scale is becoming great important issue. The purpose of this study is to develop a new technique for a micro-scale thermal measurement with AFM (Atomic Force Microscope) Which exceeds ordinary small scale temperature measurement techniques.
    In the project, special thermocouple (T.C.) probes and electric conductive probes were made as a cantilever for AFM.The T.C.probe composed of 25 micrometer sharpen nickel wire and 30 nano-meter gold deposition film has a junction of about 5 micrometer at a tip of the probe. The electric probe has same structure as the T.C.probe and made of gold wire and gold film.
    By making point contact between the probes and conductive sample or heated nonconductive sample, the contact condition has been clarified, such as contact radius, deformation mode and electron transport mode. Electric and thermal measurement of the point contact condition indicates the contact radius of about 10 nano-meter and a few nano-meter, respectively. These small contact scale has possibility of accomplishing thermal measurement with high spatial resolution.
    By scanning the T.C.probe on tiny heated sample, temperature distribution with 30 micrometer and a few micrometer resolution were sttained in 760 Torr and 0.02 Torr atmosphere. Since heat transfer through the contacting point is much smaller than that throughair, low pressure condition leads small thermal signal. For measurement with higher resolution it is important to reduce the T.C.junction size.
    The thermal measurement technique was applied to measure physical properties of a composite material sample of a Carbon Fiber Reinforced Plastic (CFRP) composed of epoxy resin and carbon fiber. By selecting suitable thickness of the sample, clear contrast of both electrical and thermal conductivity of the different materials was measured with sub-micron scale under vacuum condition.

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  • ヒートポンプ熱交換器の着霜回避にむけたスラッシュ相の流動・伝熱特性の解明

    Grant number:07750222  1995

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    中別府 修

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    Grant amount:\1100000 ( Direct Cost: \1100000 )

    本研究では、スラッシュ相の生成過程における伝熱特性,さらに生成される氷の特徴を解明するため,次の実験的研究を行った.試験容器内に,水と水より重い非水溶性の冷媒を入れ,冷媒を循環させる.冷媒は外部で熱交換され-10℃に冷やされ,容器底面から噴流として容器内に流入する.容器内部の冷媒と水は,噴流により攪拌され除熱され,温度が低下する.水温は一度-2℃程度の過冷状態を示した後,氷晶が発生し0℃となる.この後は,水温は0℃を維持し,氷の量が増加する.
    この時の熱伝達率を,氷が発生するまでは水温の変化から,また,氷が発生した後は,容器内にヒ-タを入れ氷を融解するのに必要な熱量を測ることで氷の量を測定し求めた.この結果,噴流の熱伝達率は,通常の平板への衝突噴流熱伝達による値より大きく,噴流が水の内部へ進入して伝熱面積が増加する事を示していた.また,氷が発生すると熱伝達率が氷の発生前より約2倍に上昇し,氷の量が増加するに連れて熱伝達率が低下することが分かった.
    発生する氷については,高倍率のCCDカメラを通して観察した結果,噴流部で直接水が低温の冷媒に接触して発生するのは1mm以下の径の扁平な氷であり,生成時に持っていた突起や六角形構造は,0℃の水中ですぐに無くなり,曲率の小さい構造となること,水と冷媒が接触している界面には先端部が樹枝状の薄い氷が連続的に生成することが分かった.また,発生する氷の形状を定量的に評価するためフラクタル次元の概念を使用し,過冷度が増加すると,氷晶の複雑さが増加し,フラクタル次元が増すことが示された.

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  • Study on Microscale Heat Transfer in Microelectronic Devices and Effective Cooling using Boiling Heat Transfer

    Grant number:06452185  1994 - 1995

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for General Scientific Research (B)

    HIJIKATA Kunio, SUZUKI Yuji, NAKABEPPU Osamu, NAGASAKI Takao

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    Grant amount:\6900000 ( Direct Cost: \6900000 )

    Microscale heat transfer from very small heating elements in a substrate has been investigated from the view point of cooling technology of microelectronic devises. Conjugate heat transfer of microscale heat conduction in the substrate and macroscale forced convective cooling by fluid was numerically analyzed by using a domain decomposition technique. The effect of periodic heating was also taken into account by using the Fourier transforms. The calculated heater temperature was correlated with nondimensional parameters such as Reynolds, Biot, Fourier numbers, length ratio of the heating element and substrate, etc.A simplified model was proposed to predict the element temperature in a certain range of nondimensional parameters. Boiling heat transfer from very small heating elements in a substrate was also investigated both for pool boiling and forced convective boiling. With the decrease of heater size, the effect of heat conduction becomes dominant. Further, because the heating element is smaller than the bubble diameter, the element temperature fluctuates corresponding to the bubble growth and departure, which indicates an extraordinary large surface heat transfer at the moment of the bubble departure. The effective surface heat transfer coefficient was estimated with the aid of numerical analysis of the substrate conduction. Finally, as a fundamental technique of temperature measurement in the microscale, thermoelectirc power due to the point contact of a needle to the surface was analyzed by considering both the electron tunneling effect through the surface oxide layr and the nonequilibrium effect at the point contact. The analysis well explained the experimental results.

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  • 微小温度・熱物性値測定による温度・濃度場の可視化

    Grant number:06750200  1994

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    中別府 修

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    Grant amount:\900000 ( Direct Cost: \900000 )

    本研究では電気抵抗の温度依存性を利用し、Lock-in計測法により、同一装置による高精度な温度、熱伝導率の測定を行い、その測定精度、適応限界を明らかにした。
    本測定法では、Wheat-Stone Bridgeの一つの抵抗に温度依存性の高い抵抗体(金属細線,薄膜)を用い、計測プローブとし、Lock-inアンプから角周波数ωの交流電圧を印加する。抵抗では直流成分と2ωの周波数を持つ発熱が起こり、直流分と2ωの周波数成分を持つ温度上昇が起こり、抵抗も変化する。この結果、ブリッジの出力電圧は、1ω成分と3ω成分を持ち、加熱量を十分小さく取ることで、1ω成分からプローブ近傍の温度が、また、3ω成分から2ωの温度変動成分が得られ、変動温度から周囲物質の熱伝導率が求められる。
    温度測定は水中におかれたニクロム線周りの自然対流の可視化を直径10μmの白金細線プローブで行い、比較的高精度の温度測定が可能なサーミスターでの測定結果と比較した。両者の測定結果はよく一致しており、本測定法では、白金プローブにおいて0.02℃の精度で温度計測が可能であることが分かった。
    変動温度の実験は、直径10μmの白金細線、タングステン細線を用い、空気、水、エポキシ樹脂中で、また、ガラス基板上に蒸着されたITO薄膜を用い空気中で行った。プローブ周りの対流の効果を考慮しない熱伝導モデルと測定結果を比較し、両者は空気中では大きくずれ、水中及び固体中では印加電圧周波数320Hz以下でモデルとよく一致することが分かった。薄膜の場合にも、ガラス基板の熱伝導が気体側の熱伝達に比べ支配的なため、基板側熱伝導の解と周波数320Hz以下の範囲で良好な一致を見せた。また、変動温度測定から周囲液体の熱伝導率を求め、混合液の濃度計測が可能なことを、水の上にエタノールを静かに注ぎ成層化した混合液の拡散による混合過程を測定することで示した。

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  • Trial Production of a Simple Expander-Compressor Type Heat Pump

    Grant number:05558063  1993 - 1994

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Developmental Scientific Research (B)

    HIJIKATA Kunio, TORIKOSHI Kunikazu, SUZUKI Yuji, NAKABEPPU Osamu

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    Grant amount:\7900000 ( Direct Cost: \7900000 )

    The purpose of this research is to develop a new expander-compressor type heat pump system incorporated with an inertial type free piston. The system is simply composed of one cylinder, one free piston in it and three pairs of valves at the cylinder ends. The system converts an energy in high pressure working fluid to kinetic energy of the piston, then it is used to compress the low pressure fluid. While the cycle runs, high pressure and low pressure fluids are supplied in the cylinder and medium pressure fluid is exhausted through the right and left valves in turns. The low pressure fluid draws heat out of a room for cooling, or the medium pressure fluid is used for heating. Since this system does not include conversion process form high temperature heat to electricity, it can use energy resources more effectively than conventional power generation system.
    The theoretical research was conducted using the numerical simulation called the multi node model, then the free piston expander-compressor was manufactured. In the theoretical part, the piston mass, pressure level of suction and exhaust fluid, flow and heat transfer in the cylinder, friction between the piston and the cylinder and properties of the working fluid were examined and the estimated performance coefficient showed this system is sufficient for practical use.
    In experimental part, the flow resistance of valves and the fluid leakage between rooms divided by the piston were very important. After improvement of them, two operation mode was investigated. In one mode named forced operation the timing of valve operation was externally controlled, while in the other mode named a feedback operation the valve was operated as following a signal from sensors which detected a piston motion. Through the experiment the basic operation characteristics like exhaust pressure, flow rate, piston motion and optimum condition were measured.

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  • 生体細胞のミクロ凍結機構の解明

    Grant number:05750186  1993

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    中別府 修

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    Grant amount:\900000 ( Direct Cost: \900000 )

    本研究では,生体細胞凍結のメカニズムを解明するため,冷却速度を制御可能なムービングベッドを作成し,純水,塩水溶液,タンパク質水溶液の凍結挙動に関し実験的研究を行った.
    試料はカバーガラスに挟まれ(間隔150mum)ムービングベッドの試料台(銅製)上で冷却されるが,試料台は液体窒素温度の冷却恒温ブロックと加熱ブロック上に位置し,両ブロックの温度を一定に保ち,試料台を低温側へ移動することで試料を凍結させる.ブロックの間隔,温度,試料台の移動速度を変えることで冷却速度を変化させた.
    純水の場合,冷却開始後まず,過冷却状態となり,過冷却解除が起こると,急速に氷晶が成長しデンドライトを形成する.その後氷晶は温度分布に沿って平らに進行する.純水の場合,この凍結挙動は実験範囲内では全てに共通であった.
    塩化ナトリウム水溶液の場合,過冷却解除の後,急速に成長したデンドライト状氷晶は,平衡凝固が進行する間にも見られ,本実験範囲内では常にデンドライトを形成していた.しかし,デンドライトの形状が水溶液の濃度と冷却速度に依存することも分かり,概略,高濃度,高冷却速度ほどデンドライトの間隔が細かいという特徴があった.
    蛋白質溶液としてはアルブミン水溶液を用いた.塩化ナトリウム水溶液同様,デンドライトが現れたが,アルブミンではデンドライト先端部の曲率半径が大きく,単純な塩と高分子量の蛋白質では凍結時に氷晶に与える影響が異なることが分かった.
    また,アルブミンと塩化ナトリウム両者の水溶液では氷晶の形はアルブミンのみのものと近い結果となった.

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  • 半透膜で仕切られた微小領域内水溶液の凍結挙動

    Grant number:04750160  1992

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    中別府 修

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    Grant amount:\900000 ( Direct Cost: \900000 )

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  • Measurements of thermodynamical physical properties of High Tc Superconducting Thin Film

    Grant number:03555040  1991 - 1992

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Developmental Scientific Research (B)

    HIJIKATA Kunio, OHMORI Takao, NAKABEPPU Osamu, NAKAYAMA Wataru

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    Grant amount:\9900000 ( Direct Cost: \9900000 )

    Following three subjects have been investigated.
    A. AC Impedance of Thin-Film Bi-Sr-Ca-Cu-O
    In many electronic devices based on high-temperature (high-TC) superconductors (HTS), the thin-film HTS are invariably subjected to an alternating (AC) or pulsed current. In contrast, our work concentrated on the magnitude and phase of impedance z for large values of J. Experiments were conducted on an epitaxial film of Bi-Sr-Ca-Cu-O. The results indicated that for 500kHz and above, z increased with increasing frequency. These results could be qualitatively explained by assuming that magnetic flux vortices were present in the film.
    B. Heat Transfer and Thermoelectric Voltage at Metallic Point Contacts
    Since it had already been demonstrated that a Point-contact (PC) between even similar metals can generate a thermoelectric voltage, the use of PC's as microscale temperature sensors seemed promising. At temperatures ranging from 85 K to room temperature, a thermoelectric voltage was shown to exist even at the Ag-Ag PC, in accordance with the previous results. This thermoelectric voltage was conveniently plotted against the nondimensionalized substrate temperature, demonstrating the feasibility of employing a PC as a temperature sensor. It was shown that the heat flux along the metal whisker is a linear function of the temperature drop across the PC for small temperature drops, but becomes nonlinear for large temperature drops.
    C. Film/Substrate Thermal Boundary Resistance for an Er-Ba-Cu-O High-TC Superconducting Film
    The thermal design and operation of thin-film high-TC electronics at low temperatures depends crucially on the thermal contact resistance at the boundary between the film and the substrate (Rbd). In our experimental investigation, Rbd for an Er-Ba-Cu-O film deposited on an MgO substrate, was measured by a technique in which the superconducting film was etched into two adjacent strips. One strip supported a large bias current and served as the heater, while the other strip carried a much smaller current, and served to measure the temperature of the substrate. The principal conclusion drawn from our results was that Rbd was at least two orders of magnitude higher than the previously reported values.

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  • 微細溝面上に直交して極微細溝を持つ2段溝形高性能プレート凝縮面の研究

    Grant number:03750133  1991

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    中別府 修

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    Grant amount:\900000 ( Direct Cost: \900000 )

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  • 走査型熱プローブ顕微鏡(SThM)にかかるデバイス及び装置の研究

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    Grant type:Competitive

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  • 冷却デバイスに関する研究

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    Grant type:Competitive

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