Effects of spatial heterogeneities on the slow dynamics of density fluctuations near the colloidal glass transition

Michio Tokuyama, Yayoi Terada and Irwin Oppenheim

Physica A: Statistical Mechanics and its Applications, 2002, vol. 307, issue 1, 27-40

Abstract: The effects of spatial heterogeneities on the slow dynamics of density fluctuations are discussed both in an equilibrium colloidal suspension and in a slightly nonequilibrium colloidal suspension. The long-lived, heterogeneous glassy domains appear near the glass transition and influence the dynamics of density fluctuations, leading to the α- and β-relaxation processes. The spatial heterogeneities related to the β process are less noticeable in an equilibrium case than in a nonequilibrium case. Thus, a logarithmic decay is shown to be a new critical decay in an equilibrium case, instead of the power-law decay followed by the von Schweidler decay in a nonequilibrium case.

Keywords: Hard-sphere suspensions; Long-range hydrodynamic interactions; Nonlinear density fluctuations; Spatial heterogeneities; Slow dynamics (search for similar items in EconPapers)
Date: 2002
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:307:y:2002:i:1:p:27-40

DOI: 10.1016/S0378-4371(01)00579-9

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