Self diffusion of reversibly aggregating spheres

Details Self diffusion of reversibly aggregating spheres Self diffusion of reversibly aggregating spheres

2007-05-10

arxiv.org/abs/0705.1415v1

J. Chem. Phys. 127 054503-1-7 (2007)

Physics

Condensed Matter

Soft Condensed Matter

10 figures

Scientific paper

10.1063/1.2756838

Reversible diffusion limited cluster aggregation of hard spheres with rigid bonds was simulated and the self diffusion coefficient was determined for equilibrated systems. The effect of increasing attraction strength was determined for systems at different volume fractions and different interaction ranges. It was found that the slowing down of the diffusion coefficient due to crowding is decoupled from that due to cluster formation. The diffusion coefficient could be calculated from the cluster size distribution and became zero only at infinite attraction strength when permanent gels are formed. It is concluded that so-called attractive glasses are not formed at finite interaction strength.

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