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

Michio Tokuyama, Yayoi Terada, Irwin Oppenheim

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)27-40
Number of pages14
JournalPhysica A: Statistical Mechanics and its Applications
Volume307
Issue number1-2
DOIs
Publication statusPublished - 2002 Apr 15

Keywords

  • Hard-sphere suspensions
  • Long-range hydrodynamic interactions
  • Nonlinear density fluctuations
  • Slow dynamics
  • Spatial heterogeneities

ASJC Scopus subject areas

  • Statistics and Probability
  • Condensed Matter Physics

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