Modeling of nematic electrolytes and nonlinear electroosmosis

M. Carme Calderer, Dmitry Golovaty, Oleg Lavrentovich, Noel J. Walkington

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

We derive a mathematical model of a nematic electrolyte based on the Ericksen-Leslie theory of liquid crystal flow. Our goal is to investigate the nonlinear electrokinetic effects that occur because the nematic matrix is anisotropic, in particular, transport of ions in a direction perpendicular to the electric field as well as quadratic dependence of the induced flow velocity on the electric field. The latter effect makes it possible to generate sustained flows in the nematic electrolyte that do not reverse their direction when the polarity of the applied electric field is reversed. From a practical perspective, this enables the design of AC-driven electrophoretic and electroosmotic devices. Our study of a special flow in a thin nematic film shows good qualitative agreement with laboratory experiments.

Original languageEnglish (US)
Pages (from-to)2260-2285
Number of pages26
JournalSIAM Journal on Applied Mathematics
Volume76
Issue number6
DOIs
StatePublished - Jan 1 2016

Keywords

  • Asymptotics
  • Electroosmosis
  • Ericksen-Leslie
  • Liquid crystals
  • Variational principles

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