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Updated: Jun 1, 2026
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
Modeling multiple time scales during glass formation with phase-field crystals
1Physics Department, McGill University, 3600 rue University, Montréal, Québec, Canada H3A 2T8.
Physical Review Letters
|June 4, 2011
Summary
This study numerically investigates glass formation in liquids using a microscopic field theory. The research successfully describes glass dynamics and links growing dynamic correlation length to fragile liquid behavior.
Area of Science:
- Condensed matter physics
- Computational materials science
- Statistical mechanics
Background:
- Understanding glass formation is crucial for materials science.
- Existing theories like mode coupling theory (MCT) provide insights but have limitations.
- Microscopic theories are needed to capture dynamics over multiple time scales.
Purpose of the Study:
- To numerically study the dynamics of glass formation in monatomic and binary liquids.
- To develop and validate a theoretical framework for describing glass formation.
- To investigate the relationship between dynamic correlation length and liquid fragility.
Main Methods:
- Numerical simulations using a microscopic field theory.
- Employing a stochastic framework combining phase-field crystal free energies and dynamic density functional theory.
- Comparing results with established mode coupling theory for underdamped liquids.
Main Results:
- The developed framework successfully describes key aspects of glass formation over multiple time scales.
- Agreement with mode coupling theory was demonstrated for specific liquid conditions (underdamped, moderate supercooling).
- A rapidly growing dynamic correlation length was observed and associated with fragile liquid behavior.
Conclusions:
- The stochastic framework provides a viable approach for simulating glass formation dynamics.
- The findings support the link between dynamic heterogeneity and fragile liquid behavior.
- This work advances the microscopic understanding of the glass transition in liquids.
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