Lattice model of dynamic heterogeneity and kinetic arrest in glass-forming liquids

Nicholas B. Tito, Jane E.G. Lipson, Scott Thomas Milner

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

We present a new model of glass-forming liquids in which free volume fluctuations drive dynamic heterogeneity and diffusion of mobility. Our kinetic model is developed from a microscopic perspective where free volume creation requires existing free volume nearby as a source of mobility; free volume diffusion and destruction is spontaneous by virtue of its own mobility. Simulations indicate "molten" and kinetically arrested "glassy" regions in parameter space, and a critical point where dynamic length and intermittency time scales grow as power laws. Systems near the critical point contain colonies of free volume that propagate around bubbles of glassified material.

Original languageEnglish (US)
Pages (from-to)3173-3180
Number of pages8
JournalSoft Matter
Volume9
Issue number11
DOIs
StatePublished - Mar 21 2013

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics

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