Re-entrant ordering of solute in a colloidal suspension during solvent evaporation

Details Re-entrant ordering of solute in a colloidal suspension during solvent evaporation Re-entrant ordering of solute in a colloidal suspension during solvent evaporation

2011-06-23

arxiv.org/abs/1106.4716v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 PDF figures

Scientific paper

We study the phenomenon of self-assembly of silica micro-spheres on a glass plate during evaporation of the solvent from a colloidal suspension. Our experiments unveil an interesting competition between ordering and compaction in a strongly driven, out of equilibrium system arising from a slowing down of dynamics due to an impending glass transition. A suitable choice of experimental conditions minimizing the influence of many other competing phenomena that usually complicate probing of this underlying physics is crucial for our study. A re-entrant behavior in the order-disorder phase diagram as a function of particle density and drying time is established and the results are explained with the help of simulations and phenomenological theory.

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