Effect of Size Polydispersity on Melting of Charged Colloidal Systems
Statistical Mechanics
2009-11-11 v1 Soft Condensed Matter
Abstract
We introduce simple prescriptions of the Yukawa potential to describe the effect of size polydispersity and macroion shielding effect in charged colloidal systems. The solid-liquid phase boundaries were presented with the Lindemann criterion based on molecular dynamics simulations. Compared with the Robbins-Kremer-Grest simulation results, a deviation of melting line is observed at small , which means large macroion screening length. This deviation of phase boundary is qualitatively consistent with the simulation result of the nonlinear Poisson-Boltzmann equation with full many-body interactions. It is found that this deviation of the solid-liquid phase behaviour is sensitive to the screening parameter.
Cite
@article{arxiv.cond-mat/0603283,
title = {Effect of Size Polydispersity on Melting of Charged Colloidal Systems},
author = {Yong Chen},
journal= {arXiv preprint arXiv:cond-mat/0603283},
year = {2009}
}