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Colloid-Polymer Mixtures Confined Between Asymmetric Walls: Simulation Evidence for an Interface Localization Transition

A. De Virgiliis·R. L. C. Vink·J. Horbach·K. Binder
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Abstract

Phase separation of colloid-polymer mixtures, described by the Asakura-Oosawa (AO) model, confined in a thin slit pore is studied by grand-canonical Monte Carlo simulation. While one wall is a hard wall for both particles, at the other wall there acts an additional repulsive potential on the colloids only. Varying the strength of this potential, a crossover from capillary condensation to an interface localization transition is found. The latter occurs under conditions where in the bulk almost complete phase separation has occurred.

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A. De Virgiliis, R. L. C. Vink, J. Horbach, K. Binder. 2006-09-18. Colloid-Polymer Mixtures Confined Between Asymmetric Walls: Simulation Evidence for an Interface Localization Transition. https://arxiv.org/abs/cond-mat/0609434

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