Non-equilibrium condensation and coarsening of field-driven dipolar colloids

Details Non-equilibrium condensation and coarsening of field-driven dipolar colloids Non-equilibrium condensation and coarsening of field-driven dipolar colloids

2012-03-05

arxiv.org/abs/1203.0858v1

Physics

Condensed Matter

Soft Condensed Matter

6 pages, 5 figures

Scientific paper

In colloidal suspensions, self-organization processes can be easily fueled by external fields. One particularly interesting class of phenomena occurs in monolayers of dipolar particles that are driven by rotating external fields. Here we report results from a computer simulation study of such systems focusing on the clustering behavior also observed in recent experiments. The key result of this paper is a novel interpretation of this pattern formation phenomenon: We show the clustering to be a by-product of a vapor-liquid first order phase transition. In fact, the observed dynamic coarsening process corresponds to the spindodal demixing that occurs during such a transition

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