Phase-separation transition in binary mixturesnear charged cylindrical surfaces

摘要

We study the thermodynamic behavior of nonpolar binary liquid mixtures in the vicin-ity of charged cylindrical objects. We find that above a certain critical value of charge, a phase-separation transition occurs, and a sharp interface between high- and low-dielectric constant com-ponents appears. Analytical and numerical composition profile are given, and the equilibrium frontlocation behavior as a function of the various system parameters is found.