A Novel Application of Ferrofluid Actuation with PDMS Microchannel
Ferrofluid is usually used as actuation medium inmicropump or microvalve where most microchannels werefabricated with PMMA or silicon. The manufacturing is time-consumingand costly. In this paper, we present a novelmicrochip design based on the magnetic actuation of ferrofluid.The device contains plugs and pistons formed by a ferrofluidwhich is actuated by an external NdFeB permanent magnet.The ferrofluid used for this application is a colloidalsuspension of nanosize Fe3O4 particles in a carrier fluid that ismixed with silicone oil and hexane. The microchannel wasfabricated by Poly (dimethylsiloxane) (PDMS) with fourreaction zones. The experimental result shows that theferrofluidic actuation of fluid in the PDMS microchannel wasfeasible. However, leakage and swelling in the PDMSmicrochannel might lead to fluid actuation problems. Theresult also reveals that it has potential application in biochip.
Yaw-Jen Chang Chih-Yu Hu Chu-Hsuan Lin
Department of Mechanical Engineering, Chung Yuan Christian University, Taiwan, R.O.C. Department of Biological Science and Technology, Chung Hwa University of Medical Technology, Taiwan,
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）