Skip to content

Attraction Between Like-Charged Walls: Short-Ranged Simulations Using Local Molecular Field Theory

Jocelyn M. Rodgers, Charanbir Kaur, Yng-Gwei Chen, John D. Weeks

cond-mat.stat-mecharXiv:cond-mat/0607449

Abstract

Effective attraction between like-charged walls mediated by counterions is studied using local molecular field (LMF) theory. Monte Carlo simulations of the "mimic system'' given by LMF theory, with short-ranged "Coulomb core" interactions in an effective single particle potential incorporating a mean-field average of the long-ranged Coulomb interactions, provide a direct test of the theory, and are in excellent agreement with more complex simulations of the full Coulomb system by Moreira and Netz [Eur. Phys. J. E 8, 33 (2002)]. A simple, generally-applicable criterion to determine the consistency parameter sigmamin needed for accurate use of the LMF theory is presented.

Create a lesson