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Updated: Jul 7, 2026

Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films
09:32

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Published on: January 26, 2016

Steady-state, effective-temperature dynamics in a glassy material.

J S Langer1, M L Manning

  • 1Department of Physics, University of California, Santa Barbara, California 93106-9530, USA. langer@physics.ucsb.edu

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|February 1, 2008
PubMed
Summary
This summary is machine-generated.

The shear-transformation-zone (STZ) theory successfully explains numerical simulations of glassy systems. The study reveals a classic glass transition in these systems as a function of effective temperature.

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Last Updated: Jul 7, 2026

Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films
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Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

Area of Science:

  • Condensed matter physics
  • Materials science
  • Computational physics

Background:

  • The shear-transformation-zone (STZ) theory is a key model for understanding the mechanical behavior of amorphous solids.
  • Numerical simulations by Haxton and Liu (HL) provide extensive data to rigorously test theoretical models.

Purpose of the Study:

  • To analyze numerical simulations using the STZ theory.
  • To test the fundamental assumptions of STZ theory, particularly the role of effective disorder temperature.
  • To derive constraints on STZ theory ingredients from experimental data.

Main Methods:

  • Analysis of existing numerical simulation data from Haxton and Liu.
  • Application of shear-transformation-zone (STZ) based theoretical framework.
  • Investigation of system behavior under constant shear rates at low temperatures.

Main Results:

  • The STZ theory proves robust when tested against the extensive HL dataset.
  • The HL data offer significant constraints on specific components of the STZ theory.
  • A surprising classic glass transition, including super-Arrhenius behavior, was observed as a function of effective temperature in the simulated system.

Conclusions:

  • The STZ theory is validated by the HL numerical simulations.
  • The effective disorder temperature is confirmed as a crucial dynamical variable in glassy systems.
  • The study uncovers a fundamental glass transition within the simulated system, offering new insights into amorphous material behavior.