Active fluidization in dense glassy systems
arXiv:1412.1631 · doi:10.1039/C5SM02950C
Abstract
Dense soft glasses show strong collective caging behavior at sufficiently low temperatures. Using molecular dynamics simulations of a model glass former, we show that the incorporation of activity or self-propulsion, f0, can induce cage breaking and fluidization, resulting in a disappearance of the glassy phase beyond a critical f0 . The diffusion coefficient crosses over from being strongly to weakly temperature dependent as f0 is increased. In addition, we demonstrate that activity induces a crossover from a fragile to a strong glass and a tendency for clustering of active particles. Our results are of direct relevance to the collective dynamics of dense active colloidal glasses and to recent experiments on tagged particle diffusion in living cells.
8 pages, 9 figures
References in corpus (6)
- Turning bacteria suspensions into a "superfluid"
- Effective Interactions in Active Brownian Suspensions
- Generalized energy equipartition in harmonic oscillators driven by active baths
- Active Matter Transport and Jamming on Disordered Landscapes
- Glassy dynamics of athermal self-propelled particles: Computer simulations and a nonequilibrium microscopic theory
- Glass Transition for Driven Granular Fluids
Cited by in corpus (43)
- Dense active matter model of motion patterns in confluent cell monolayers
- Perspective: Nonequilibrium glassy dynamics in dense systems of active particles
- The nonequilibrium glassy dynamics of self-propelled particles
- Extreme active matter at high densities
- Activity controls fragility: A Random First Order Transition Theory for an active glass
- How active forces influence nonequilibrium glass transitions
- Active glasses
- Mode-Coupling Theory for Active Brownian Particles
- Cell division and death inhibit glassy behaviour of confluent tissues
- Nonequilibrium mode-coupling theory for dense active systems of self-propelled particles
- Nonlinear Rheology in a Model Biological Tissue
- Multiple Types of Aging in Active Glass
- Active Atoms and Interstitials in Two-dimensional Colloidal Crystals
- A comparative study between two models of active cluster-crystals
- Escape of a passive particle from activity-induced energy landscape: Emergence of slow and fast effective diffusion
- Translational and rotational dynamics of a self-propelled Janus probe in crowded environments
- Glassy swirls of active dumbbells
- A Microscopic Theory of Softness in Supercooled Liquids
- Mode-coupling theory for the steady-state dynamics of active Brownian particles
- Glassy dynamics of a model of bacterial cytoplasm with metabolic activities
- Cage Length Controls the Non-Monotonic Dynamics of Active Glassy Matter
- The role of pair correlation function in the dynamical transition predicted by the mode coupling theory
- Arrested States in Persistent Active Matter: Gelation without Attraction
- Inverse Solidification Induced by Active Janus Particles
- Mode-Coupling Theory for Tagged-Particle Motion of Active Brownian Particles
- Work fluctuations of self-propelled particles in the phase separated state
- Intermittent relaxation and avalanches in extremely persistent active matter
- Active cage model of glassy dynamics
- Long-range translational order and hyperuniformity in two-dimensional chiral active crystal
- How to Study a Persistent Active Glassy System?
- Motion of active tracer in a lattice gas with cross-shaped particles
- Activity-dependent self-regulation of viscous length scales in biological systems
- Criticality at finite strain rate in fluidized soft glassy materials
- Phase separation in a two-dimensional binary colloidal mixture by quorum sensing activity
- Connecting Relaxation Time to a Dynamical Length Scale in Athermal Active Glass Formers
- Motility driven glassy dynamics in confluent epithelial monolayers
- Enhanced Long Wavelength Mermin-Wagner Fluctuations in Active Crystals and Glasses
- Scaling the glassy dynamics of active particles: Tunable fragility and reentrance
- Dynamic phase transition induced by active molecules simulating a facilitation mechanism in a supercooled liquid
- Configurational Entropy of Self Propelled Glass Formers
- A facilitation-induced fluidization transition in supercooled water triggered by a few active molecules
- Active ploughing through a compressible viscoelastic fluid: Unjamming and emergent nonreciprocity
- Giant fluctuations in the flow of fluidised soft glassy materials: an elasto-plastic modelling approach