Elasticity, Facilitation, and Dynamic Heterogeneity in Glass-Forming Liquids
Misaki Ozawa, Giulio Biroli
Abstract
We study the role of elasticity-induced facilitation on the dynamics of glass-forming liquids by a coarse-grained two-dimensional model in which local relaxation events, taking place by thermal activation, can trigger new relaxations by long-range elastically mediated interactions. By simulations and an analytical theory, we show that the model reproduces the main salient facts associated with dynamic heterogeneity and offers a mechanism to explain the emergence of dynamical correlations at the glass transition. We also discuss how it can be generalized and combined with current theories.
Topics & Concepts
SalientElasticity (physics)Glass transitionDynamical heterogeneityStatistical physicsFacilitationRelaxation (psychology)ThermalThermal fluctuationsMaterials scienceMechanicsPhysicsClassical mechanicsChemical physicsThermodynamicsComputer sciencePolymerEconomicsComposite materialPsychologySocial psychologyArtificial intelligenceManagementMaterial Dynamics and PropertiesLiquid Crystal Research AdvancementsTheoretical and Computational Physics