https://doi.org/10.1140/epjst/e2015-50316-9
Regular Article
Electric double layer of anisotropic dielectric colloids under electric fields
1 Graduate Program in Applied Physics, Northwestern University, Evanston, Illinois 60208, USA
2 Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA
3 Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
4 Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, Illinois 60208, USA
a e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Received: 16 November 2015
Revised: 10 May 2016
Published online: 15 July 2016
Abstract
Anisotropic colloidal particles constitute an important class of building blocks for self-assembly directed by electrical fields. The aggregation of these building blocks is driven by induced dipole moments, which arise from an interplay between dielectric effects and the electric double layer. For particles that are anisotropic in shape, charge distribution, and dielectric properties, calculation of the electric double layer requires coupling of the ionic dynamics to a Poisson solver. We apply recently proposed methods to solve this problem for experimentally employed colloids in static and time-dependent electric fields. This allows us to predict the effects of field strength and frequency on the colloidal properties.
© EDP Sciences, Springer-Verlag, 2016
