Nanofluidic bubble pump using surface tension directed gas injection


Tas, N.R. and Berenschot, J.W. and Lammerink, T.S.J. and Elwenspoek, M. and Berg, A. van den (2002) Nanofluidic bubble pump using surface tension directed gas injection. Analytical Chemistry, 74 (9). pp. 2224-2228. ISSN 0003-2700

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Abstract:A new concept for liquid manipulation has been developed and implemented in surface-micromachined fluid channels. It is based on the surface tension directed injection of a gas into the liquid flow through micrometer-sized holes in the microchannel wall. The injected gas is directed to an exhaust by a cross-sectional asymmetry of the microchannel and thereby moves minute liquid volumes. Successful pumping experiments were performed with single stroke volumes of tens of picoliters at frequencies around 1 Hz. The minimum actuation pressure is 0.6 bar for a 2-m channel height, in accordance with theoretical predictions
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Copyright:© 2002 American Chemical Society
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Metis ID: 206301