XXII ICTAM, 25–29 August 2008, Adelaide, Australia NUMERICAL STUDIES OF NONLINEAR KINETICS IN INDUCED-CHARGE ELECTRO-OSMOSIS

نویسندگان

  • Misha Marie Gregersen
  • Martin Z. Bazant
  • Henrik Bruus
چکیده

We present a numerical study of induced-charge electro-osmosis (ICEO) of electrolytes in microfluidic channels containing a fixed dielectric structure. ICEO is the nonlinear electro-osmotic slip that occurs in the electrolyte when an applied electric field acts on the ionic charge it induces around the polarizable surface of the dielectric structure. We also establish a method for optimizing the shape of the dielectric structure for any given objective function, e.g. the resulting pumping velocity achieved for asymmetric structures.

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تاریخ انتشار 2008