Control of particles in micro-electrode devices

Tuval, I.; Mezic, I.; Bottausci, F.; Zhang, Y.T.; MacDonald, N.C.; Piro, O.
Physical Review Letters 95, 236002 (2005)

The impact of the convective fluid motion induced by the electric fields on the dielectrophoretic manipulation of particles is investigated theoretically and experimentally. By means of a simplified model a channel with a periodic array of microelectrodes we show that electroconvective flows induce the formation of traps for particles, providing a dynamical mechanism to control micro particles in such devices. We demonstrate experimentally the theoretically predicted dynamical phenomena.




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