Abstract
When a liquid is cooled below its melting temperature, it usually crystallizes. However, if the quenching rate is fast enough, the system may remain in a disordered state, progressively losing its fluidity upon further cooling. When the time needed for the rearrangement of the local atomic structure reaches approximately 100 seconds, the system becomes “solid” for any practical purpose, and this defines the glass transition temperature T g . Approaching this transition from the liquid side, different systems show qualitatively different temperature dependencies of the viscosity, and accordingly they have been classified by introducing the concept of “fragility.” We report experimental observations that relate the microscopic properties of the glassy phase to the fragility. We find that the vibrational properties of the glass well below T g are correlated with the fragility value. Consequently, we extend the fragility concept to the glassy state and indicate how to determine the fragility uniquely from glass properties well below T g .
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Dates
| Type | When |
|---|---|
| Created | 21 years, 9 months ago (Oct. 30, 2003, 8:25 p.m.) |
| Deposited | 1 year, 7 months ago (Jan. 9, 2024, 10:22 p.m.) |
| Indexed | 1 day, 17 hours ago (Aug. 26, 2025, 3:06 a.m.) |
| Issued | 21 years, 9 months ago (Oct. 31, 2003) |
| Published | 21 years, 9 months ago (Oct. 31, 2003) |
| Published Print | 21 years, 9 months ago (Oct. 31, 2003) |
@article{Scopigno_2003, title={Is the Fragility of a Liquid Embedded in the Properties of Its Glass?}, volume={302}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1089446}, DOI={10.1126/science.1089446}, number={5646}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Scopigno, Tullio and Ruocco, Giancarlo and Sette, Francesco and Monaco, Giulio}, year={2003}, month=oct, pages={849–852} }