Pulsating active matter

Abstract

We reveal that the mechanical pulsation of locally synchronised particles is a generic route to propagate deformation waves. We consider a model of dense repulsive particles whose activity drives periodic change in size of each individual. The dynamics is inspired by biological tissues where cells consume fuel to sustain active deformation. We show that the competition between repulsion and synchronisation triggers an instability which promotes a wealth of dynamical patterns, ranging from spiral waves to defect turbulence. We identify the mechanisms underlying the emergence of patterns, and characterize the corresponding transitions. By coarse-graining the dynamics, we propose a hydrodynamic description of an assembly of pulsating particles, and discuss an analogy with reaction-diffusion systems.

arXiv comment6 pages, 4 figures

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Cited by in corpus (19)

• Nonreciprocal Ising model
• Dynamical phase transitions in the nonreciprocal Ising model
• Correlated Noise and Critical Dimensions
• Hyperuniformity and conservation laws in non-equilibrium systems
• Biased ensembles of pulsating active matter
• Continuous symmetry breaking of low-dimensional systems driven by inhomogeneous oscillatory driving forces
• Quantifying dissipation in flocking dynamics: When tracking internal states matters
• Diffusive oscillators capture the pulsating states of deformable particles
• Competition between lanes and transient jammed clusters in driven binary mixtures
• Synthetic Quorum Sensing and Absorbing Phase Transitions in Colloidal Active Matter
• Species interconversion of deformable particles yields transient phase separation
• More is less in unpercolated active solids
• Collective dynamics and elasto-chemical cluster waves in communicating colloids with explicit size response
• Shape Switching and Tunable Oscillations of Adaptive Droplets
• Transverse Self-Propulsion Enhances the Aggregation of Active Dumbbells
• Active energy harvesting and work transduction by hair-cell bundles in bullfrog's inner ear
• Derivation and Analysis of Amplitude Equation for Generalized AMB+ in Presence of Chemical Reaction
• Control protocols for harmonically confined run-and-tumble particles
• Control of collective activity to crystallize an oscillator gas