Superdiffusive, heterogeneous, and collective particle motion near the jamming transition in athermal disordered materials
arXiv:1001.0914 · doi:10.1209/0295-5075/90/20005
Abstract
We use computer simulations to study the microscopic dynamics of an athermal assembly of soft particles near the fluid-to-solid, jamming transition. Borrowing tools developed to study dynamic heterogeneity near glass transitions, we discover a number of original signatures of the jamming transition at the particle scale. We observe superdiffusive, spatially heterogeneous, and collective particle motion over a characteristic scale which displays a surprising non-monotonic behavior across the transition. In the solid phase, the dynamics is an intermittent succession of elastic deformations and plastic relaxations, which are both characterized by scale-free spatial correlations and system size dependent dynamic susceptibilities. Our results show that dynamic heterogeneities in dense athermal systems and glass-formers are very different, and shed light on recent experimental reports of `anomalous' dynamical behavior near the jamming transition of granular and colloidal assemblies.
References in corpus (12)
- Jamming at Zero Temperature and Zero Applied Stress: the Epitome of Disorder
- Jamming of Soft Particles: Geometry, Mechanics, Scaling and Isostaticity
- Universal nature of particle displacements close to glass and jamming transitions
- Plastic Response of a 2D Lennard-Jones amorphous solid: Detailed analysis of the local rearrangements at very slow strain-rate
- Critical scaling in linear response of frictionless granular packings near jamming
- Critical scaling and heterogeneous superdiffusion across the jamming/rigidity transition of a granular glass
- Jammed frictionless discs: connecting local and global response
- Creep motion of an intruder within a granular glass close to jamming
- Unexpected drop of dynamical heterogeneities in colloidal suspensions approaching the jamming transition
- Journey of an intruder through the fluidisation and jamming transitions of a dense granular media
- Multiple dynamic regimes in concentrated microgel systems
- Growing length and time scales in a suspension of athermal particles
Cited by in corpus (36)
- Theoretical perspective on the glass transition and amorphous materials
- Unified study of glass and jamming rheology in soft particle systems
- A non-local rheology for granular flows across yield conditions
- Dynamic heterogeneity in amorphous materials
- A unified framework for non-Brownian suspension flows and soft amorphous solids
- Shear thickening in granular suspensions: inter-particle friction and dynamically correlated clusters
- Dynamic criticality at the jamming transition
- Shear flow of non-Brownian suspensions close to jamming
- Connecting diffusion and dynamical heterogeneities in actively deformed amorphous systems
- Inhomogeneous shear flows in soft jammed materials with tunable attractive forces
- Finite-Size-Scaling at the Jamming Transition: Corrections to Scaling and the Correlation Length Critical Exponent
- Cages and anomalous diffusion in vibrated dense granular media
- Dimensional dependence of the Stokes--Einstein relation and its violation
- Vortices enhance diffusion in dense granular flows
- Toward a microscopic description of flow near the jamming threshold
- Unified View of Avalanche Criticality in Sheared Glasses
- Dynamical heterogeneity in soft particle suspensions under shear
- Universal relaxation dynamics of sphere packings below jamming
- Analogies between growing dense active matter and soft driven glasses
- Langevin equations from experimental data: the case of rotational diffusion in granular media
- Intermittent relaxation and avalanches in extremely persistent active matter
- Dynamical Heterogeneity in a Highly Supercooled Liquid under a Sheared Situation
- Dynamical compressibility of dense granular shear flows
- Relaxation dynamics of non-Brownian spheres below jamming
- An Itinerant Oscillator model with cage inertia for mesorheological granular experiments
- Theory for the rheology of dense non-Brownian suspensions: divergence of viscosities and - rheology
- Fluctuations and diffusion in sheared athermal suspensions of deformable particles
- Dynamical heterogeneities in a two dimensional driven glassy model: current fluctuations and finite size effects
- Dynamic length scales in athermal, shear-driven, jamming of frictionless disks in two dimensions
- Rheology near jamming - the influence of lubrication forces
- Friction-induced Shear thickening: a microscopic perspective
- Critical scaling of diffusion coefficients and size of rigid clusters of soft athermal particles under shear
- Dissipation and velocity distribution at the shear-driven jamming transition
- Free volume under shear
- Relaxation dynamics and long-time tails explain shear-induced diffusion of soft athermal particles near jamming
- Dynamics Phases, Stratification, Laning, and Pattern Formation for Driven Bidisperse Disk Systems in the Presence of Quenched Disorder