Computer simulation of polymer-induced clustering of colloids

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Abstract
We have developed a novel computational scheme that allows direct numerical simulation of polymer-colloid mixtures at constant osmotic pressure. Using this technique, we have studied the entropic attraction that is caused by ideal polymers dissolved in a simple (hard-sphere) colloidal dispersion. In particular, we studied the nonpairwise additivity of the polymer-induced entropic interaction. The present simulations show that the nonpairwise additivity has a pronounced effect on the structure of a polymer-colloid mixture.