Three-dimensional Binary Superlattices of Oppositely-charged Colloids
Soft Condensed Matter
2009-11-11 v1
Abstract
We report the equilibrium self-assembly of binary crystals of oppositely-charged colloidal microspheres at high density. By varying the magnitude of the charge on near equal-sized spheres we show that the structure of the binary crystal may be switched between face-centered cubic, cesium chloride and sodium chloride. We interpret these transformations in terms of a competition between entropic and Coulombic forces.
Cite
@article{arxiv.cond-mat/0505001,
title = {Three-dimensional Binary Superlattices of Oppositely-charged Colloids},
author = {Paul Bartlett and Andrew Campbell},
journal= {arXiv preprint arXiv:cond-mat/0505001},
year = {2009}
}