Self diffusion of reversibly aggregating spheres
arXiv:0705.1415 · doi:10.1063/1.2756838
Abstract
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.
10 figures
References in corpus (17)
- Extended corresponding-states behavior for particles with variable range attractions
- Higher order glass-transition singularities in colloidal systems with attractive interactions
- Glasses in hard spheres with short-range attraction
- Model for reversible colloidal gelation
- Confirmation of Anomalous Dynamical Arrest in attractive colloids: a molecular dynamics study
- Phase diagram of the adhesive hard sphere fluid
- Scaling of dynamics with the range of interaction in short-range attractive colloids
- Competition of percolation and phase separation in a fluid of adhesive hard spheres
- Simulation study of Non-ergodicity Transitions: Gelation in Colloidal Systems with Short Range Attractions
- Arrested phase separation in a short-ranged attractive colloidal system: A numerical study
- Tagged-particle dynamics in a hard-sphere system: mode-coupling theory analysis
- Evidence for Unusual Dynamical Arrest Scenario in Short Ranged Colloidal Systems
- Phase Behavior of Short Range Square Well Model
- Gel to glass transition in simulation of a valence-limited colloidal system
- Structure and Relaxation Dynamics of a Colloidal Gel
- Aging in short-ranged attractive colloids: A numerical study
- Numerical study of the glass-glass transition in short-ranged attractive colloids