Year: 2012
Type: article
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.
Source: Soft Matter
DOI: 10.1039/c2sm26164b
Authors: Koki Yoshizawa, Nao Wakabayashi, Masakatsu Yonese, Junpei Yamanaka, C. Patrick Royall
Institutions: Nagoya City University, University of Bristol
Language: English
Subfield: Physical and Theoretical Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2952953371