Volume 55, Number 3, August 2001
|Page(s)||425 - 431|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||01 December 2003|
Modeling the electrophoretic deposition of colloidal particles
Departamento de Electrónica
y Electromagnetismo, Facultad de Física Avda. Reina Mercedes
s/n 41012 Sevilla, Spain
2 Department of Chemical Engineering, Princeton University - Princeton, NJ 08544, USA
Accepted: 25 May 2001
This letter presents the results of numerical simulations of the buildup of a layer of colloidal particles on an electrode. In a low-frequency electric field, particles suspended in a low-conductivity liquid migrate to one electrode and then to the other. During each cycle, deposits are formed and dissipated. The current-voltage characteristics of the process reflect properties of the suspension and the deposited layer. Using a flux corrected transport (FCT) algorithm, the transport equation for the particle phase is solved simultaneously with equations describing the electric field. The model reproduces the main features of the current-voltage relation.
PACS: 82.45.-h – Electrochemistry and electrophoresis / 82.70.Dd – Colloids / 47.65.+a – Electrohydrodynamics and magnetohydrodynamics
© EDP Sciences, 2001
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