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Issue 6, 2004
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Magnetically-driven biomimetic micro pumping using vortices

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Abstract

Planar micropumps utilizing vortices shed by an oscillating ferromagnetic bar are presented. The movement of the bar is induced by magnetic coupling with an external spinning magnet. Thus, energy transfer is achieved without physical contact or need of any on-chip power source. To create vortices inside the chip, the Reynolds number is locally increased with the oscillation of the bar. The utilization of the vortices as a tool for efficient transfer of energy is inspired by the behaviour of swimming animals and flying insects in nature. The pumps operate in two different scales (milli-scale and micro-scale) in order to take advantage of both. Experiments are presented characterizing the pumps and their flow patterns. The range of operation of the pumps is from 3 µl min−1 to 600 µl min−1, though smaller flow rates are also possible.

Graphical abstract: Magnetically-driven biomimetic micro pumping using vortices

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Publication details

The article was received on 21 May 2004, accepted on 12 Oct 2004 and first published on 11 Nov 2004


Article type: Paper
DOI: 10.1039/B407710E
Citation: Lab Chip, 2004,4, 598-602
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    Magnetically-driven biomimetic micro pumping using vortices

    J. Atencia and D. J. Beebe, Lab Chip, 2004, 4, 598
    DOI: 10.1039/B407710E

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