Dynamical heterogeneities in an attraction driven colloidal glass
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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).
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PUERTAS, Antonio M., Matthias FUCHS, Michael E. CATES, 2006. Dynamical heterogeneities in an attraction driven colloidal glass. In: Journal of Non-Crystalline Solids. 2006, 352, pp. 4830-4834. Available under: doi: 10.1016/j.jnoncrysol.2006.01.140BibTex
@article{Puertas2006Dynam-4889, year={2006}, doi={10.1016/j.jnoncrysol.2006.01.140}, title={Dynamical heterogeneities in an attraction driven colloidal glass}, volume={352}, journal={Journal of Non-Crystalline Solids}, pages={4830--4834}, author={Puertas, Antonio M. and Fuchs, Matthias and Cates, Michael E.} }
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