Nanofluidic bubble pump using surface tension directed gas injection

被引：51

作者：

Tas, NR ^{[1
]}

Berenschot, JW ^{[1
]}

Lammerink, TSJ ^{[1
]}

Elwenspoek, M ^{[1
]}

van den Berg, A ^{[1
]}

机构：

[1] Univ Twente, MESA Res Inst, NL-7500 AE Enschede, Netherlands

来源：

ANALYTICAL CHEMISTRY | 2002年 / 74卷 / 09期

关键词：

D O I：

10.1021/ac011117o

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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-mum channel heights in accordance with theoretical predictions.

引用

页码：2224 / 2227

页数：4

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