The Asakura-Oosawa model in the protein limit: the role of many-body interactions

Abstract

We study the Asakura-Oosawa model in the "protein limit", where the penetrable sphere radius $R_{AO}$ is much greater than the hard sphere radius $R_c$. The phase behaviour and structure calculated with a full many-body treatment show important qualitative differences when compared to a description based on pair potentials alone. The overall effect of the many-body interactions is repulsive.

arXiv comment9 pages and 11 figures, submitted to J. Phys.: Condensed Matter, special issue "Effective many-body interactions and correlations in soft matter"

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• Crowding of Polymer Coils and Demixing in Nanoparticle-Polymer Mixtures
• Wetting in mixtures of colloids and excluded-volume polymers from density functional theory
• Phase diagram of mixtures of colloids and polymers in the thermal crossover from good to $\theta$ solvent
• Phase Behaviour of Binary Hard-Sphere Mixtures: Free Volume Theory Including Reservoir Hard-Core Interactions
• Self-assembly of complex structures in colloid-polymer mixtures
• Influence of Solvent Quality on Depletion Potentials in Colloid-Polymer Mixtures
• Fluid-fluid demixing curves for colloid-polymer mixtures in a random colloidal matrix
• Phase stability of a reversible supramolecular polymer solution mixed with nanospheres