Haeberle, S., Schmitt, N., Zengerle, Roland and Ducrée, JensORCID: 0000-0002-0366-1897
(2006)
A centrifugo-magnetically actuated gas micropump.
In: MEMS 2006 - 19th IEEE International Conference on Micro Electro Mechanical Systems, 22-26 January 2006, Istanbul, Turkey.
ISBN 0-7803-9475-5
This paper describes a novel gas micropump on a centrifugal microfluidic platform. The pump is integrated on a passive and microstructured polymer disk which is sealed with an elastomer lid featuring paramagnetic inlays. The rotational motion of this hybrid disk over a stationary magnet induces a designated sequence of volume displacements of the elastic lid, leading to a net transport of gas. The pumping pressure scales linearly with the frequency, with a maximum observable pressure of 4.1 kPa. The first application of this rotary device is the production of gas-liquid flows by pumping ambient air into a continuous centrifugal flow of liquid. The injected gas volume segments the liquid stream into a series of liquid compartments. Apart from such multi-phase flows, the new pumping technique supplements a generic air-to-liquid sampling method to centrifugal microfluidic platforms.
Proceedings of the 19th IEEE International Conference on Micro Electro Mechanical Systems.
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Institute of Electrical and Electronics Engineers. ISBN 0-7803-9475-5