Ultra-long-range dynamic correlations in a microscopic model for aging gels
arXiv:1605.09770 · doi:10.1103/PhysRevE.95.060601
Abstract
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.
References in corpus (12)
- Theoretical perspective on the glass transition and amorphous materials
- Colloidal Gels: Equilibrium and Non-Equilibrium Routes
- Length scale dependence of dynamical heterogeneity in a colloidal fractal gel
- Scaling of dynamics with the range of interaction in short-range attractive colloids
- X-Ray Photon Correlation Spectroscopy Reveals Intermittent Aging Dynamics in a Metallic Glass
- Arrested phase separation in a short-ranged attractive colloidal system: A numerical study
- Resolving long-range spatial correlations in jammed colloidal systems using photon correlation imaging
- Relaxation in yield stress systems through elastically interacting activated events
- Influence of the glass transition on the liquid-gas spinodal decomposition
- Heterogeneous and anisotropic dynamics of a 2D gel
- Dynamics and structure of an aging binary colloidal glass
- Subdiffusion and intermittent dynamic fluctuations in the aging regime of concentrated hard spheres
Cited by in corpus (8)
- Elastically driven, intermittent microscopic dynamics in soft solids
- Gelation as condensation frustrated by hydrodynamics and mechanical isostaticity
- Liquid-liquid transition revealed by quasi-static cooling of an ultra-viscous metallic liquid
- Deformation and flow of amorphous solids: An updated review of mesoscale elastoplastic models
- Analogies between growing dense active matter and soft driven glasses
- Temperature dependence of fast relaxation processes in amorphous materials
- Aging in the transport on the corrugated ratchet potential
- Two Modes of Cluster Dynamics Govern the Viscoelasticity of Colloidal Gels