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Issue 2, 2005
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Frequency-dependent transversal flow control in centrifugal microfluidics

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Abstract

This work presents a novel flow switch for centrifugal microfluidic platforms which is solely controlled by the Coriolis pseudo force. This Coriolis switch consists of an inverse Y-structure with one common upstream channel and two symmetric outlets on a rotating disk. Above a certain threshold frequency, the Coriolis force becomes dominant that the entire flow is diverted into one of the outlets which is selected by the direction of rotation. The threshold frequency has been measured to be 350 rad s−1 (∼55.7 Hz) for a channel width of 360 µm and a depth of 125 µm. The results are supported by extensive CFD simulations.

Graphical abstract: Frequency-dependent transversal flow control in centrifugal microfluidics

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Publication details

The article was received on 04 May 2004, accepted on 01 Sep 2004 and first published on 14 Oct 2004


Article type: Paper
DOI: 10.1039/B406699E
Citation: Lab Chip, 2005,5, 146-150
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    Frequency-dependent transversal flow control in centrifugal microfluidics

    T. Brenner, T. Glatzel, R. Zengerle and J. Ducrée, Lab Chip, 2005, 5, 146
    DOI: 10.1039/B406699E

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