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Erschienen in:
2011 | OriginalPaper | Buchkapitel
Induced-Charge Electrokinetic Phenomena
verfasst von : Martin Z. Bazant
Erschienen in: Electrokinetics and Electrohydrodynamics in Microsystems
Verlag: Springer Vienna
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This chapter provides an introduction to a certain class of nonlinear electrokinetic phenomena, where the applied electric field acts on its own induced-charge in an electrolytic solution near a polarizable surface. Many applications are discussed, such as colloidal particle dynamics (induced-charge electrophoresis) and microfluidic mixing and pumping (induced-charge electro-osmosis), while emphasizing the basic physics of each phenomenon. A Standard Model for these situations is introduced and analyzed in simple cases. Similarities and differences are noted with other electrokinetic phenomena, such as classical linear (fixed-charge) electrokinetics in electrolytes and electrohydrodynamics in leaky dielectrics.