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| Pàgina inicial > Articles > Articles publicats > Emergence of equilibrated liquid regions within the glass |
| Títol variant: | Revisiting the glass transition emergence of equilibrated regions within the glass |
| Data: | 2023 |
| Descripció: | 6 pàg. |
| Resum: | The conventional understanding of the glass transition is that the transition from glass to liquid appears as a dynamic process in which atoms or molecules relax cooperatively into the equilibrium phase. Here we show that-in contrast to this picture-isolated regions of liquid form within the glassy matrix and the nature of the glass transition at a given temperature depends on the ratio between the relaxation time of the glass, τglass, and the alpha relaxation time of the equilibrated liquid, τα. At temperatures at which τglass/τα is large, we observe that high-mobility regions transit directly into the equilibrated liquid and subsequently grow by dynamic facilitation before-or while-cooperative glass relaxation sets into play. On the contrary, at temperatures associated with smaller τglass/τα, the glass transition proceeds by cooperative relaxation dynamics throughout the material. This behaviour is independent of the experimental procedure or protocol used to produce the glass. |
| Ajuts: | Agencia Estatal de Investigación MAT2016-79759-R Agencia Estatal de Investigación PID2020-117409RB-I00 Agencia Estatal de Investigación SEV-2017-0706 |
| Drets: | Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets. |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió acceptada per publicar |
| Publicat a: | Nature Physics, Vol. 19 Núm. 1 (2023) , p. 114-119, ISSN 1745-2481 |
Postprint 19 p, 640.6 KB |
Material complementari. Postprint 282.8 KB |