Evaluation of the electric force in electrophoresis
Resource
Journal of Colloid and Interface Science 305 (2): 324-329
Journal
Journal of Colloid and Interface Science
Journal Volume
305
Journal Issue
2
Pages
324-329
Date Issued
2007
Date
2007
Author(s)
Abstract
A new expression for the evaluation of the electric force acting on a colloidal particle in an applied electric field is derived under the condition of weak applied electric field. The expression derived, which is based on the Maxwell stress tensor, is applicable to both rigid and soft particles for various types of surface conditions and to both symmetric and asymmetric geometries. We show that, depending upon the electrophoresis conditions, the electric force evaluated by the methods commonly used in the literature can be overestimated, thereby leading to incorrect electrophoretic mobility. © 2006 Elsevier Inc. All rights reserved.
Type
journal article
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