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Analytical expression for electric field between two facing strip electrodes in microchannel

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3 Author(s)
P. Linderholm ; Ecole Polytechnique Fed. Lausanne, Microsystems Lab., Lausanne, Switzerland ; U. Seger ; P. Renaud

An analytical solution is presented for the electric field between two facing strip electrodes situated in a microchannel, as frequently used in impedance cytometry applications. The measured change in resistance as induced by a 5 μm bead moving through the microchannel is in good agreement with the model. It is also demonstrated that the centre sensitivity is maximal for an electrode width equal to ∼56% of the channel height.

Published in:

Electronics Letters  (Volume:42 ,  Issue: 3 )