- Ultra-long-range dynamic correlations in a microscopic model for aging gels doi link

Auteur(s): Chaudhuri Pinaki, Berthier L.

(Article) Publié: Physical Review E: Statistical, Nonlinear, And Soft Matter Physics, vol. 95 p.060601 (2017)
Texte intégral en Openaccess : arxiv

Ref HAL: hal-01585104_v1
Ref Arxiv: 1605.09770
DOI: 10.1103/PhysRevE.95.060601
Ref. & Cit.: NASA ADS
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2 citations

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)