Nano Science and Technology Institute
Nanotech 2004 Vol. 1
Nanotech 2004 Vol. 1
Technical Proceedings of the 2004 NSTI Nanotechnology Conference and Trade Show, Volume 1
 
Chapter 7: Micro Fluidics and Nanoscale Transport
 

Capillary Passive Valve in Microfluidic System

Authors:H. Cho, H-Y Kim, J.Y. Kang and T.S. Kim
Affilation:Microsystem Research Center, Korea Institute of Science and Technology, KR
Pages:263 - 266
Keywords:capillary burst valve, microfluidcs, soft lithography, microchannel
Abstract:This work reports the theoretical and experimental investigations of capillary bust valves to regulate liquid flow in microchannels. The theoretical analysis uses the Young-Laplace equation and geometrical considerations to predict the pressure at the edge of the valve opening. Numerical simulations are employed to predict the meniscus shape evolution while the interface is pinned at the valve edge. Microchannel and valves are fabricated using the soft lithography. A wafer-rotating system, which can adjust a driving pressure by rotational speed, induces a liquid flow. Experimentally measured valve-bursting pressure agrees with theoretical predictions.
Capillary Passive Valve in Microfluidic SystemView PDF of paper
ISBN:0-9728422-7-6
Pages:521
Hardcopy:$79.95
 
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