Combined electrophoretic and electro-osmotic transport through channels of periodically varying cross section

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Abstract

The results derived by Yariv and Dorfman [Phys. Fluids 19, 037101 (2007).] for the electrophoretic transport of a point-size Brownian particle in a narrow channel of periodically varying cross section are generalized to joint electrophoretic and electro-osmotic flow (or purely electro-osmotic flow, in the case of a neutral particle) in a channel possessing a uniform zeta potential by a suitable change in the definition of the Péclet number.

Original languageEnglish (US)
Article number037102
JournalPhysics of Fluids
Volume20
Issue number3
DOIs
StatePublished - Mar 2008

Bibliographical note

Funding Information:
I would like to thank Nabil Laachi for pointing out the parallel between the axial components of the electrophoresis and electro-osmosis and Ehud Yariv for numerous discussions on this topic, and I thank both of them for their comments on earlier versions of this manuscript. This work was supported in part by the Camille and Henry Dreyfus Foundation New Faculty Award Program.

Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.

Keywords

  • Channel flow
  • Electrokinetic effects
  • Electrophoresis
  • Osmosis

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