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Glass transition theory based on stress relaxation

Kostya Trachenko
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Abstract

We propose that an onset of glass transition can be defined as the point at which a supercooled liquid acquires the stress relaxation mechanism of a solid glass. We translate this condition into the rate equation for local relaxation events. This equation simultaneously gives two main signatures of glass transition, stretched-exponential relaxation and the Vogel-Fulcher law. The proposed theory quantifies system fragility in terms of the number of retarded local relaxation events and reproduces its correlation with the non-exponentiality of relaxation and bonding type.

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Kostya Trachenko. 2006-01-16. Glass transition theory based on stress relaxation. https://doi.org/10.1088/0953-8984%2F18%2F19%2Fl04

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