Stress reorganisation and response in active solids
arXiv:1407.3676 · doi:10.1103/PhysRevLett.113.028102
Abstract
We present a microscopic model of a disordered viscoelastic active solid, i.e. an active material whose long time behaviour is elastic as opposed to viscous. It is composed of filaments, passive crosslinks and molecular motors powered by stored chemical energy, e.g. actomyosin powered by ATP. Our model allows us to study the collective behaviour of contractile active elements and how their interaction with each other and the passive elastic elements determines the macroscopic mechanical properties of the active material. As a result of the (un)binding dynamics of the active elements, we find that this system provides a highly responsive material with a dynamic mechanical response strongly dependent on the amount of deformation.
5 pages, 2 figures, Published 7 July 2014
References in corpus (24)
- The Mechanics and Statistics of Active Matter
- Elasticity of Semiflexible Biopolymer Networks
- Hydrodynamic fluctuations and instabilities in ordered suspensions of self-propelled particles
- Rheology of Active-Particle Suspensions
- Generic theory of active polar gels: a paradigm for cytoskeletal dynamics
- Physics of adherent cells
- Spontaneous flow transition in active polar gels
- Surface tension and contact with soft elastic solids
- Steady-state hydrodynamic instabilities of active liquid crystals: Hybrid lattice Boltzmann simulations
- Molecular motors robustly drive active gels to a critically connected state
- Stochastic mechano-chemical kinetics of molecular motors: a multidisciplinary enterprise from a physicist's perspective
- Organization and instabilities of entangled active polar filaments
- Non-equilibrium mechanics and dynamics of motor activated gels
- Contractile units in disordered actomyosin bundles arise from F-actin buckling
- Generic phase diagram of active polar films
- Rheology of Active Filament Solutions
- Dynamic Scattering from Solutions of Semiflexible Polymers
- Requirements for contractility in disordered cytoskeletal bundles
- Mechanical response of active gels
- Collective dynamics of active cytoskeletal networks
- Instabilities and Oscillations in Isotropic Active Gels
- A Critical Assessment of the Boltzmann Approach for Active Systems
- Anomalous fluctuations of active polar filaments
- Role of particle conservation in self-propelled particle systems
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- Pseudo energy wells in active systems
- Active buckling of pressurized spherical shells : Monte Carlo Simulation
- Estimate of entropy generation rate can spatiotemporally resolve the active nature of cell flickering
- Supersonic kinks and solitons in active solids
- Peristalsis by pulses of activity
- Collective excitations in active solids featuring alignment interactions
- Unified description of viscous, viscoelastic, or elastic thin active films on substrates
- Motility-induced crystallization and rotating crystallites
- Rheologically tuned modes of collective transport in active viscoelastic films
- Collective cell migration without proliferation: density determines cell velocity and wave velocity
- Mechanics and thermodynamics of contractile entropic biopolymer networks