TANAKA LAB. Physics of Soft Condensed Matter The University of Tokyo Graduate School of Engineering Department of Applied Physics The University of Tokyo Institute of Industrial Science Department of Fundamental Engineering
Entrance > Research > Liquid, Glass, Gel > Glass Transition, Jamming > Glass Transition and Jamming in a Driven Granular System
Polymer, Liquid Crystal, Colloid, Membrane, ProteinLiquid, Glass, GelLight and Soft Matter
Liquid-Liquid Transition in the Molecular LiquidCritical-Like Phenomena Associated with Liquid-Liquid TransitionLiquid-Liquid Transition under Spatial ConfinementSimple View of Waterlike AnomaliesTwo-Order-Parameter Description of Critical Phenomena and Phase Separation of Supercooled LiquidsTwo-Order-Parameter Description of Glass Transition Covering Its Strong to Fragile LimitFrustration on the Way to Crystallization in GlassGlass Transition in a Polydispersed Colloidal SystemGlass Transition and Jamming in a Driven Granular SystemAging and Shear Rejuvenation of a Colloidal GlassKinetics of Crystallization under a Glass Transition TemperatureViolation of the Incompressibility of Liquid by Simple Shear Flow

Glass Transition and Jamming in a Driven Granular System

Glass Transition and Jamming in a Driven Granular System Collective behavior of granular particles is often markedly different from that of ordinary solids, liquids, or gases, due to the dissipative nature of interactions such as inelastic collisions and friction. Recent studies revealed, however, that driven granular systems, where vibration, shear, or airflow compensates the energy dissipation, exhibit crystallization and a liquid-glass transition, which are strikingly analogous to those in molecular liquids and colloidal suspensions. Here we use a vibrated quasi-two-dimensional granular system as a model of microscopic thermal systems, and investigate the origin of the liquid-glass transition, which remains one of the most fundamental unsolved problems in condensed matter physics. We demonstrate by direct observation the existence of long-lived medium-range crystalline order, whose size grows monotonically towards the ideal glass-transition point. Furthermore, we find a close relationship of this crystalline order with both dynamic heterogeneity and slow dynamics, which are considered to be the keys to this problem. Our findings are remarkably similar to recent numerical results on two distinct model liquids with thermal fluctuations, and thus open an intriguing possibility of understanding the dynamic arrest in both thermal and athermal systems in a unified manner.