Influence of the glass transition on the liquid-gas spinodal decomposition Auteur(s): Testard V., Berthier L., Kob W. (Article) Publié: Physical Review Letters, vol. 106 p.125702 (2011) Texte intégral en Openaccess : Ref HAL: hal-00583152_v1 Ref Arxiv: 1101.2293 DOI: 10.1103/PhysRevLett.106.125702 WoS: 000288794200004 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote 69 Citations 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 |