Nanofluidic bubble pump using surface tension directed gas injection

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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
Item Type:Article
Copyright:© 2002 American Chemical Society
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/43291
Official URL:http://dx.doi.org/10.1021/ac011117o
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