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Colloid-polymer mixtures serve as model systems to study complex fluids. The challenge in this study lies in the fact that these are systems where the relevant physical processes often occur over a wide range of characteristic length and time scales which can be strongly correlated. The addition of soluble non-adsorbing polymer to colloidal dispersions, even in small amounts, has a significant ...

Phase separation can be induced in a colloidal dispersion by adding non-adsorbing polymers. Depletion of polymer around the colloidal particles induces an effective attraction, leading to demixing at sufficient polymer concentration. This communication reviews theoretical and experimental work carried out on the polymer-mediated attraction between spherical colloids and the resulting phase sepa...

We investigate the effect of confinement on particle dynamics in mixtures of colloidal particles and non-adsorbing depletant polymers that serve as models for attractive suspensions. Holding the volume fraction of particles and the polymer concentration constant, the dynamics of the particles become increasingly slow as the suspensions are confined in thin wedgeshaped cells. Confocal micrograph...

– We investigate the structure of colloid-polymer mixtures by calculating the structure factors for the Asakura-Oosawa model in the PY approximation. We discuss the role of potential range, polymer concentration and polymer-polymer interactions on the colloid-colloid structure. Our results compare reasonably well with the recent experiments of Moussäıd et al. (Moussäid A., Poon W. C. K., Pusey ...