Determination of the zeta potential for highly charged colloidal suspensions

Abstract

We compute the electrostatic potential at the surface, or zeta potential $\zeta$, of a charged particle embedded in a colloidal suspension using a hybrid mesoscopic model. We show that for weakly perturbing electric fields, the value of $\zeta$ obtained at steady state during electrophoresis is statistically indistinguishable from $\zeta$ in thermodynamic equilibrium. We quantify the effect of counterions concentration on $\zeta$. We also evaluate the relevance of the lattice resolution for the calculation of $\zeta$ and discuss how to identify the effective electrostatic radius.

8 pages, 3 figures with 2 panels

References in corpus (1)

• Colloidal electrophoresis: Scaling analysis, Green-Kubo relation, and numerical results

Cited by in corpus (3)

• Colloids electrophoresis for strong and weak ion diffusivity
• Computer Simulations of Charged Colloids in Alternating Electric Fields
• A Scalable Multiphysics Algorithm for Massively Parallel Direct Numerical Simulations of Electrophoresis