|Ultra-long-range dynamic correlations in a microscopic model for aging gels |
Auteur(s): Chaudhuri Pinaki, Berthier L.
Ref HAL: hal-01585104_v1
Ref Arxiv: 1605.09770
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
We use large-scale computer simulations to explore the non-equilibrium aging dynamics in a microscopic model for colloidal gels. We find that gelation resulting from a kinetically-arrested phase separation is accompanied by `anomalous' particle dynamics revealed by superdiffusive particle motion and compressed exponential relaxation of time correlation functions. Spatio-temporal analysis of the dynamics reveals intermittent heterogeneities producing spatial correlations over extremely large length scales. Our study is the first microscopically-resolved model reproducing all features of the spontaneous aging dynamics observed experimentally in soft materials.
Commentaires: Réf Journal: Phys. Rev. E 95, 060601 (2017)