Ion pumping in nanochannels using an asymmetric electrode array


Sparreboom, W. and Cucu, C.F. and Eijkel, J.C.T. and Berg, A. van den (2008) Ion pumping in nanochannels using an asymmetric electrode array. In: 12th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTas 2008, 12-16 October 2008, San Diego, CA, USA (pp. pp. 206-208).

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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
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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