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(사)한국바이오칩학회 The Korean BioChip Society



BT+IT+NTThe Korean BioChip Society

BioChip Journal

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Info. Vol.6 - No.4 (2012.12.20)
Title Fabrication process for an electrochemical microfluidic chip containing a microvalve system
Authors Soeun Park1, Soong Ho Um2 & Young-Kee Kim1
Institutions 1Department of Chemical Engineering, Program of Integrated Biotechnology, and Research Center of Chemical Technology, Hankyong National University, Anseong, Gyeonggi-Do 456-749, Korea
2School of Chemical Engineering and SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, Gyeonggi-Do 440-746, Korea
Correspondence and requests for materials should be addressed to Y.-K. Kim ( kim@hknu.ac.kr)
Abstract A microvalve system is a useful tool to operate microfluidic devices. Push-up pneumatic microvalves are common when manufacturing microfluidic devices containing microvalves. In this study, the development of a push-down pneumatic microvalve was attempted, because push-down operation is useful in electrochemical microfluidic devices. In order to optimize the factors involved in fabricating the pushdown microvalve system, the layer configuration and structure of the fluidic channel were determined. The thickness of the fluidic layer was also optimized. The composition of stamp bonding material, which is a mixture of polydimethylsiloxane and hexane, was determined to achieve complete attachment. A microfluidic device containing a microvalve system was successfully fabricated via the optimized fabrication procedure, and good valve operating performance was
confirmed through chip operation.
Keyword Microfluidic device, Pneumatic microvalve, Push-down type, PDMS, lectrochemical chip
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