Thermodynamic signature of the onset of caged dynamics in glass-forming liquids

Sudesh Kamath, Ralph H. Colby, Sanat K. Kumar, Jörg Baschnagel

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Considering the immediate vicinity of an onset temperature, TA where system dynamics just begin to experience caging effects, the thermodynamics of supercooled liquids was examined. It was noticed on analyzing the simulation data from polymer model and from small molecule mixtures that the configurational entropy becomes strongly temperature dependent below TA. The thermodynamic connection to the localized dynamics of glass-forming liquids was established because the diffusion coefficient followed the Adam-Gibbs relationship.

Original languageEnglish (US)
Pages (from-to)865-868
Number of pages4
JournalJournal of Chemical Physics
Volume116
Issue number3
DOIs
StatePublished - Jan 15 2002

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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