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Effects of Surface Roughness on the Flow Characteristics in PDMS Microchannels

Title
Effects of Surface Roughness on the Flow Characteristics in PDMS Microchannels
Author
김우승
Issue Date
2005-12
Publisher
IEEE
Citation
2005 3rd IEEE/EMBS Special Topic Conference on Microtechnology in Medicine and Biology, v. 2005, Page. 292-295
Abstract
Fundamental understanding of liquid flow through microchannels is important to the design and optimization of microfluidic devices. The objective of the current study is to experimentally investigate the effects of surface roughness on the flow characteristics in rectangular PDMS microchannel with a hydraulic diameter ranging from 66.67 to 200 μm. The experimental results are compared with the predictions from the conventional laminar flow theory. A significant difference between the experimental data and the theoretical predictions is found. Experimental results indicate that the pressure gradient and flow friction in microchannels are higher than those from the conventional laminar flow theory. This may be attributed to the fact that there exists the effect of surface roughness of the microchannels. The present results with a surface roughness model are compared with the experimental results to examine the validity of the model. It is found that there is a good agreement between the experimental data and the numerical predictions with a surface roughness model. © 2005 IEEE.
URI
https://ieeexplore.ieee.org/document/1548452/http://repository.hanyang.ac.kr/handle/20.500.11754/111986
ISBN
978-078038711-9
DOI
10.1109/MMB.2005.1548452
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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