Critical adsorption on non-spherical colloidal particles

Abstract

We consider a non-spherical colloidal particle immersed in a fluid close to its critical point. The temperature dependence of the corresponding order parameter profile is calculated explicitly. We perform a systematic expansion of the order parameter profile in powers of the local curvatures of the surface of the colloidal particle. This curvature expansion reduces to the short distance expansion of the order parameter profile in the case that the solvent is at the critical composition.

9 pages, 7 figures

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• Effective interactions between electric double-layers
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• Liquid bridging of cylindrical colloids in near-critical solvents
• Effective Pair Interaction of Patchy Particles in Critical Fluids
• Probing interface localization-delocalization transitions by colloids
• Bridging transitions and capillary forces for colloids in a slit
• Effective interaction between a colloid and a soft interface near criticality