T1 process and dynamics in glass-forming hard-sphere liquids

Yuxing Zhou, Scott T. Milner

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

To study the relationship between dynamics and structure in a glass-forming liquid, we introduce a purely geometric criterion for locally mobile particles in a dense hard-sphere fluid: namely, "T1-active" particles, which can gain or lose at least one Voronoi neighbor by moving within their free volume with other particles fixed. We obtain geometrical and dynamical properties for monodisperse hard-sphere fluids with 0.40 < < 0.64 using a "crystal-avoiding" MD simulation that effectively suppresses crystallization without altering the dynamics. We find that the fraction of T1-active particles vanishes at random close packing, while the percolation threshold of T1-inactive particles is essentially identical to the commonly identified hard-sphere glass transition, g ≈ 0.585.

Original languageEnglish (US)
Pages (from-to)2700-2705
Number of pages6
JournalSoft matter
Volume11
Issue number13
DOIs
StatePublished - Apr 7 2015

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics

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