Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1485907 | Journal of Non-Crystalline Solids | 2006 | 5 Pages |
Abstract
The dynamical heterogeneities (DH) in non-ergodic states of an attractive colloidal glass are studied, as a function of the waiting time. Whereas the fluid states close to vitrification showed strong DH, the distribution of squared displacements of the glassy states studied here only present a tail of particles with increased mobility for the lower attraction strength at short waiting times. These particles are in the surface of the percolating cluster that comprises all of the particles, reminiscent of the fastest particles in the fluid. The quench deeper into the attractive glass is dynamically more homogeneous, in agreement with repulsive glasses (i.e. Lennard-Jones glass).
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Antonio M. Puertas, Matthias Fuchs, Michael E. Cates,