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arXiv · 1606.01423

Alternating strings and clusters in suspensions of charged colloids

Jeffrey C. Everts·Marjolein N. van der Linden·Alfons van Blaaderen·René van Roij
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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.

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Jeffrey C. Everts, Marjolein N. van der Linden, Alfons van Blaaderen, René van Roij. 2016-06-04. Alternating strings and clusters in suspensions of charged colloids. https://doi.org/10.1039/c6sm01283c

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