Viscous flow in glass-forming liquids: The twice-activation analysis and the bond wave model

Elena A. Chechetkina

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arXiv · 2509.11211

Viscous flow in glass-forming liquids: The twice-activation analysis and the bond wave model

Elena A. Chechetkina

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Abstract

The twice-activation method for analysis of experimental viscosity-temperature data reveals a set of interconnected parameters describing the state of the flowing glass-forming liquid in terms of convergation point which describes an infinite set of viscosity-temperature relations for the liquid considered. The observed uncertainty in the viscosity-temperature behavior permits to consider glass-forming liquid as the self-organizing system realizing by the bonds wave as dissipative pattern. The acoustic bond wave and the switching bond wave are considered generally and in different groups of glass-formers: inorganic, organic and polymers. The demonstrated correlation between two coordinates of convergation point and kinetic and thermodynamic measures of fragility permits to resolve the problem of the measures discrepancy.

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Elena A. Chechetkina. 2025-09-14. Viscous flow in glass-forming liquids: The twice-activation analysis and the bond wave model. https://arxiv.org/abs/2509.11211

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