Ion pumping in nanochannels using an asymmetric electrode array


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Sparreboom, W. and Cucu, C.F. and Eijkel, J.C.T. and van den Berg, A. (2008) Ion pumping in nanochannels using an asymmetric electrode array. In: 12th International Conference on Miniaturized Systems for Chemistry and Life Sciences, 12-16 Oct 2008, San Diego, California.

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Abstract:We demonstrate an ion pump, consisting of a nanochannel with an AC driven
asymmetric electrode array. Our system enables us to actively pump ions using a
low driving voltage. In all experiments the electrical double layers are overlapping.
Via viscous coupling ion pumping is accompanied by liquid pumping. Actuation
below 500 mV at 10 Hz results in a liquid velocity of ~10 μm/s, corresponding to an
electrical ion current of ~400 fA. Finite element simulations support the experimental
data.
Item Type:Conference or Workshop Item
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:
Link to this item:http://purl.utwente.nl/publications/65348
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