Alternating strings and clusters in suspensions of charged colloids
Abstract
We report the formation of alternating strings and clusters in a binary suspension of repulsive charged colloids with double layers larger than the particle size. Within a binary cell model we include many-body and charge-regulation effects under the assumption of a constant surface potential, and consider their repercussions on the two-particle interaction potential. We find that the formation of induced dipoles close to a charge-reversed state may explain the formation of these structures. Finally, we will touch upon the formation of dumbbells and small clusters in a one-component system, where the effective electrostatic interaction is always repulsive.
Cite
@article{arxiv.1606.01423,
title = {Alternating strings and clusters in suspensions of charged colloids},
author = {Jeffrey C. Everts and Marjolein N. van der Linden and Alfons van Blaaderen and René van Roij},
journal= {arXiv preprint arXiv:1606.01423},
year = {2016}
}
Comments
12+1 pages, 9 figures, 1 supplementary figure and 5 supplementary movies, V2: Improved discussions and figures