Retardation and flow at the glass transition

Abstract

The crossover from back-and-forth jumps between structural minima to the no-return jumps of the viscous flow is modeled in terms of an ensemble of double-well potentials with a finite decay probability. The ensemble is characterized by the Kohlrausch-exponent $\beta$ of the time dependence $t^{\beta }$ of the response at short times. The model is applied to shear and dielectric data from the literature.

Second version changed according to advice of Referees: Rewritten to Regular Article. New data included, in particular monoalcohol data, which argue for a common crossover to viscous processes in dielectrics and shear

References in corpus (2)

• Supercooled Liquids for Pedestrians
• Investigation of the shear-mechanical and dielectric relaxation processes in two mono-alcohols close to the glass transition

Cited by in corpus (5)

• Unifying different interpretations of the nonlinear response in glass-forming liquids
• Model for the alpha and beta shear-mechanical properties of supercooled liquids and its comparison to squalane data
• A pragmatical access to the viscous flow
• Third and Fifth Harmonic Responses in Viscous Liquids
• Rheological model for the alpha relaxation of glass-forming liquids and its comparison to data for DC704 and DC705