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Thermophoresis at a charged surface: the role of hydrodynamic slip.

Authors
Type
Published Article
Journal
Journal of physics. Condensed matter : an Institute of Physics journal
Publication Date
Volume
21
Issue
3
Pages
35103–35103
Identifiers
DOI: 10.1088/0953-8984/21/3/035103
PMID: 21817262
Source
Medline

Abstract

By matching boundary layer hydrodynamics with slippage to the force-free flow at larger distances, we obtain the thermophoretic mobility of charged particles as a function of the Navier slip length b. A moderate value of b augments Ruckenstein's result by a term 2b/λ, where λ is the Debye length. If b exceeds the particle size a, the enhancement coefficient a/λ is independent of b but proportional to the particle size. Similar effects occur for transport driven by a salinity gradient or by an electric field.

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