Pattern formation in binary fluid mixtures induced by short-range competing interactions
Abstract
Molecular dynamics simulations and integral equation calculations of a simple equimolar mixture of diatomic molecules and monomers interacting via attractive and repulsive short-range potentials show the existence of pattern formation (microheterogeneity), mostly due to depletion forces away from the demixing region. Effective site-site potentials extracted from the pair correlation functions using an inverse Monte Carlo approach and an integral equation inversion procedure exhibit the features characteristic of a short-range attractive and long-range repulsive potential. When charges are incorporated into the model, this becomes a coarse grained representation of a room temperature ionic liquid, and as expected, intermediate range order becomes more pronounced and stable.
Cite
@article{arxiv.1506.08632,
title = {Pattern formation in binary fluid mixtures induced by short-range competing interactions},
author = {C. Bores and E. Lomba and A. Perera and N. G. Almarza},
journal= {arXiv preprint arXiv:1506.08632},
year = {2015}
}