Issue 11, 2013
From the journal:

Soft Matter

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

Nicholas B. Tito,a   Jane E. G. Lipson*a  and  Scott T. Milnerb  

* Corresponding authors

a Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, USA
E-mail: Jane.E.G.Lipson@Dartmouth.edu

b Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA

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.

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

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Article information

DOI
https://doi.org/10.1039/C3SM25679K
Article type
Paper
Submitted
23 Mar 2012
Accepted
21 Jan 2013
First published
07 Feb 2013

Soft Matter, 2013,9, 3173-3180

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

N. B. Tito, J. E. G. Lipson and S. T. Milner, Soft Matter, 2013, 9, 3173 DOI: 10.1039/C3SM25679K

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