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Updated: Jul 7, 2026
09:32
Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films
Published on: January 26, 2016
Correlation between dynamic heterogeneity and medium-range order in two-dimensional glass-forming liquids
Takeshi Kawasaki1, Takeaki Araki, Hajime Tanaka
1Institute of Industrial Science, University of Tokyo, Meguro-ku, Tokyo 153-8505, Japan.
Physical Review Letters
|February 1, 2008
Summary
Vitrification, the process of forming a glassy state, is linked to hidden crystalline ordering. The strength of frustration, a key factor, influences how easily materials vitrify and their glass transition behavior.
Area of Science:
- Condensed matter physics
- Materials science
- Computational physics
Background:
- Glassy states form when crystallization is prevented during cooling or compression.
- The underlying physical mechanisms governing vitrification and the glass transition are not fully understood.
Purpose of the Study:
- To investigate the relationship between medium-range crystalline order and slow dynamics in the glass transition.
- To explore the role of frustration in controlling vitrification and glass transition properties.
Main Methods:
- Numerical simulations were employed using a model system of polydisperse hard disks.
Main Results:
- A direct correlation was identified between medium-range crystalline ordering and the slow dynamics characteristic of the glass transition.
- The strength of frustration was found to be directly related to both the ease of vitrification and the nature of the glass transition.
Conclusions:
- Vitrification may represent a state of suppressed crystalline ordering driven by frustration.
- The findings suggest that frustration is a critical parameter in understanding the glass transition in disordered materials.
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