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

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

doi:10.1063/1.1433498

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

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

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22 Scopus citations

Abstract

Considering the immediate vicinity of an onset temperature, T_A 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 T_A. The thermodynamic connection to the localized dynamics of glass-forming liquids was established because the diffusion coefficient followed the Adam-Gibbs relationship.

Original language	English (US)
Pages (from-to)	865-868
Number of pages	4
Journal	Journal of Chemical Physics
Volume	116
Issue number	3
DOIs	https://doi.org/10.1063/1.1433498
Publication status	Published - Jan 15 2002

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All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)
Physical and Theoretical Chemistry

Cite this

Kamath, S., Colby, R. H., Kumar, S. K., & Baschnagel, J. (2002). Thermodynamic signature of the onset of caged dynamics in glass-forming liquids. Journal of Chemical Physics, 116(3), 865-868. https://doi.org/10.1063/1.1433498

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10.1063/1.1433498