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

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Published on: January 26, 2016

Order parameter for non-equilibrium dissipation and ideal glass.

Jun-Ying Jiang¹, Liang Gao¹, Hai-Bin Yu¹

¹Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People's Republic of China.

Reports on Progress in Physics. Physical Society (Great Britain)

|October 31, 2025

Summary

This summary is machine-generated.

Researchers found a configurational distance metric that unifies energy dissipation in glass materials. This metric works across various preparation histories and testing conditions above the kinetic ideal glass transition temperature.

Keywords:

glass transition ideal glass mechanical spectroscopy relaxation dynamics

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Area of Science:

Materials Science
Condensed Matter Physics
Physical Chemistry

Background:

Glass materials are complex non-equilibrium systems.
Their properties, like energy dissipation, depend heavily on how they are made.
A unified parameter to describe this behavior has been lacking.

Purpose of the Study:

To find a unified order parameter for energy dissipation in glasses.
To rationalize the influence of preparation history on glass properties.
To explore the concept of the kinetic ideal glass transition.

Main Methods:

Utilized a configurational distance metric.
Analyzed energy dissipation data from glasses.
Tested various preparation histories (cooling rates, aging).
Applied diverse testing protocols (probing times, mechanical excitation).

Main Results:

The configurational distance metric successfully collapsed energy dissipation data.
This unification held across different preparation histories and testing protocols.
The findings were consistent above the kinetic ideal glass transition temperature.

Conclusions:

A configurational distance metric provides a unified description of non-equilibrium dissipation in glasses.
The kinetic ideal glass transition temperature is a fundamental concept reflected in material properties.