Phase separation in binary colloids with charge asymmetry
Soft Condensed Matter
2017-12-27 v1 Statistical Mechanics
Abstract
We report that binary dispersions of like-charged colloidal particles with large charge asymmetry but similar size exhibit phase separation into crystal and fluid phases under very low salt conditions. This is unexpected because the effective colloid-colloid pair interactions are accurately described by a Yukawa model which is stable to demixing. We show that colloid-ion interactions provide an energetic driving force for phase separation, which is initiated by crystallization of one species.
Keywords
Cite
@article{arxiv.1203.0663,
title = {Phase separation in binary colloids with charge asymmetry},
author = {Koki Yoshizawa and Nao Wakabayashi and Masakatsu Yonese and Junpei Yamanaka and C. Patrick Royall},
journal= {arXiv preprint arXiv:1203.0663},
year = {2017}
}