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- Influence of the glass transition on the liquid-gas spinodal decomposition doi link

Auteur(s): Testard V., Berthier L., Kob W.

(Article) Publié: Physical Review Letters, vol. 106 p.125702 (2011)
Texte intégral en Openaccess : arxiv


Ref HAL: hal-00583152_v1
Ref Arxiv: 1101.2293
DOI: 10.1103/PhysRevLett.106.125702
WoS: 000288794200004
Ref. & Cit.: NASA ADS
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Résumé:

We use large-scale molecular dynamics simulations to study the kinetics of the liquid-gas phase separation if the temperature is lowered across the glass transition of the dense phase. We observe a gradual change from phase separated systems at high temperatures to nonequilibrium, gel-like structures that evolve very slowly at low temperatures. The microscopic mechanisms responsible for the coarsening strongly depend on temperature, and change from diffusive motion at high temperature to a strongly intermittent, heterogeneous and thermally activated dynamics at low temperature, leading to logarithmically slow growth of the typical domain size.



Commentaires: 4 pages, 5 figures