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Issue 11, 2007
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Flow rate analysis of a surface tension driven passive micropump

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Abstract

A microfluidic passive pumping method relying on surface tension properties is investigated and a physical model is developed. When a small inlet drop is placed on the entrance of a microfluidic channel it creates more pressure than a large output drop at the channel exit, causing fluid flow. The behavior of the input drop occurs in two characteristic phases. An analytical solution is proposed and verified by experimental results. We find that during the first phase the flow rate is stable and that this phase can be prolonged by refilling the inlet drop to produce continuous flow in the microchannel.

Graphical abstract: Flow rate analysis of a surface tension driven passive micropump

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Publication details

The article was received on 21 May 2007, accepted on 06 Jul 2007 and first published on 30 Jul 2007


Article type: Paper
DOI: 10.1039/B707637A
Citation: Lab Chip, 2007,7, 1475-1478
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    Flow rate analysis of a surface tension driven passive micropump

    E. Berthier and D. J. Beebe, Lab Chip, 2007, 7, 1475
    DOI: 10.1039/B707637A

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