Tunable liquid-liquid critical point in an ionic model of silica
Soft Condensed Matter
2016-03-30 v1
Abstract
Recently it was shown that the WAC model for liquid silica [L. V. Woodcock, C. A. Angell, and P. Cheeseman, J. Chem. Phys. 65, 1565 (1976)] is remarkably close to having a liquid-liquid critical point (LLCP). We demonstrate that increasing the ion charge separates the global maxima of the response functions, while reducing the charge smoothly merges them into a LLCP; a phenomenon that might be experimentally observable with charged colloids. An analysis of the Si and O coordination numbers suggests that a sufficiently low Si/O coordination number ratio is needed to attain a LLCP.
Keywords
Cite
@article{arxiv.1510.08088,
title = {Tunable liquid-liquid critical point in an ionic model of silica},
author = {Erik Lascaris},
journal= {arXiv preprint arXiv:1510.08088},
year = {2016}
}