Equilibrium route to colloidal gellation: mixtures of hard sphere-like colloids

Details Equilibrium route to colloidal gellation: mixtures of hard sphere-like colloids Equilibrium route to colloidal gellation: mixtures of hard sphere-like colloids

2008-11-17

arxiv.org/abs/0811.2707v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevLett.102.058301

The binodals and the non-ergodicity lines of a binary mixture of hard sphere-like particles with large size ratio are computed for studying the interplay between dynamic arrest and phase separation in depletion-driven colloidal mixtures. Contrarily to the case of hard core plus short range effective attraction, physical gellation without competition with the fluid-phase separation can occur in such mixtures. This behavior due to the oscillations in the depletion potential should concern all simple mixtures with non-ideal depletant, justifying further studies of their dynamic properties.

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