2002 Fiscal Year Final Research Report Summary
Research Development of Multiple Valuable Imaging in Micro-Thermofluid Devices
| Project/Area Number |
13555057
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Thermal engineering
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| Research Institution | Keio University |
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Principal Investigator |
HISHIDA Koichi Keio University, Faculty of Science and Technology, Professor, 理工学部, 教授 (40156592)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Yohei National Institute of Advanced Industrial Science and Technology, Researcher, 産業技術総合研究所, 主任研究員 (00344127)
MAEDA Masanobu Keio University, Faculty of Science and Technology, Professor, 理工学部, 教授 (90051466)
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| Project Period (FY) |
2001 – 2002
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| Keywords | Laser measurement / Particle Image Velocimeter / Laser Induced Fluorescence / Micro Scope / Brownian motion / Fluorescence Particles / Image processing |
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| Research Abstract |
Rapid technological progress has required reliable measurement techniques for velocity and temperature in microspace, particularly in the biological or electrochemical engineering. This paper focuses on how to accomplish quantitative measurement techniques applicable to investigating thermofluid dynamics in a microchannel that is utilized in lab-on-a-chip and μTAS. Micro-resolution particle image velocimetry (micro-PIV) is one of promising techniques to measure fluid velocities in a microchannel using a time-averaging method in order to eliminate the effect of Brownian motion of sub-micron tracer particles on velocity detection, however, this technique has no ability to detect an unsteady flow that is frequently observed in microfluidic devices. A spatial averaged time-resolved particle tracking velocimetry method was proposed to measure velocity fields in a pulsating flow considering Brownian motion. Temperature measurements of a fluid flow in a microchannel were performed utilizing fluorescence, because the fluorescent intensity is strongly dependent on temperature. Using this temperature measurement system and micro-PIV it was found that the heat flux due to conduction is approximately fifty times that due to convection in a microchannel, therefore one has to consider the heat conduction in the design processes of microfluidic devices.
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[Publications] Sato, Y., Inaba, S., Irisawa, G., Ishizaka, M., Hishida, K., Maeda, M.: "Thermofluid Dynamics in Microchannel Obatined from Optical Measurements Using Fluorescence"Proc. of The 10th International Symposium on Flow Visualization. F0059 (2002)
Description
「研究成果報告書概要(和文)」より
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