Stabilization of active matter by flow-vortex lattices and defect ordering

Abstract

Active systems, from bacterial suspensions to cellular monolayers, are continuously driven out of equilibrium by local injection of energy from their constituent elements and exhibit turbulent-like and chaotic patterns. Here we demonstrate both theoretically and through numerical simulations, that the crossover between wet active systems, whose behaviour is dominated by hydrodynamics, and dry active matter where any flow is screened, can be achieved by using friction as a control parameter. Moreover we discover unexpected vortex ordering at this wet-dry crossover. We show that the self organisation of vortices into lattices is accompanied by the spatial ordering of topological defects leading to active crystal-like structures. The emergence of vortex lattices, which leads to the positional ordering of topological defects, suggests potential applications in the design and control of active materials.

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Cited by in corpus (79)

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• Data-driven quantitative modeling of bacterial active nematics
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• Orientational properties of nematic disclinations
• Insensitivity of active nematic dynamics to topological constraints
• Derivation of a hydrodynamic theory for mesoscale dynamics in microswimmer suspensions
• Geometry-driven collective ordering of bacterial vortices
• Optimal Control of Active Nematics
• Probing the shear viscosity of an active nematic
• Hydrodynamics of Active Defects: from order to chaos to defect ordering
• Confinement-induced self-organization in growing bacterial colonies
• Turbulence and turbulent pattern formation in a minimal model for active fluids
• Kinetics of motile solitons in fluid nematics
• Negative stiffness and modulated states in active nematics
• Antipolar ordering of topological defects in active liquid crystals
• Multi-scale statistics of turbulence motorized by active matter
• Nutrient transport driven by microbial active carpets
• Ultrafast viscosity measurement with ballistic optical tweezers
• Vortex formation and dynamics of defects in shells of active nematics
• Understanding dense active nematics from microscopic models
• Geometry-dependent viscosity reduction in sheared active fluids
• Twist-induced crossover from 2D to 3D turbulence in active nematics
• Hydrodynamic instabilities in active cholesteric liquid crystals
• Self-enhanced mobility enables vortex pattern formation in living matter
• Wrinkling instability in 3D active nematics
• Emergent Structures in an Active Polar Fluid : dynamics of shape, scattering and merger
• Active nematics with anisotropic friction: the decisive role of the flow aligning parameter
• Role of friction in multidefect ordering
• Emergence of Lévy Walks in Systems of Interacting Individuals
• Active nematic flows on curved surfaces
• Topological states in chiral active matter: dynamic blue phases and active half-skyrmions
• Emergence and melting of active vortex crystals
• Mesoscopic Simulations of Active-Nematics
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• Propagation of active nematic-isotropic interfaces on substrates
• Orientational correlations in active and passive nematic defects
• Geometry and mechanics of microdomains in growing bacterial colonies
• Properties of twisted topological defects in 2D nematic liquid crystals
• Active nematic-isotropic interfaces in channels
• Active Matter Invasion
• Binding self-propelled topological defects in active turbulence
• Dispersion of activity at an active-passive nematic interface
• A purely mechanical model with asymmetric features for early morphogenesis of rod-shaped bacteria micro-colony
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• Self-generated gradients stabilize the hydrodynamic instabilities in active suspensions
• Vortex Lattices in Active Nematics with Periodic Obstacle Arrays
• Flocking of Active Particles in a Turbulent Flow
• Catapulting of topological defects through elasticity bands in active nematics
• Spontaneous formation of chaotic protrusions in a polymerizing active gel layer
• Vorticity phase separation and defect lattices in the isotropic phase of active liquid crystals
• Order-disorder transition in active nematic: A lattice model study
• Friction mediated phase transition in confined active nematics
• Active nematic defects in compressible and incompressible flows
• Coalescing Clusters Unveil New Regimes of Frictional Fluid Mechanics
• Pattern selection and the route to turbulence in incompressible polar active fluids
• Multi-defect Dynamics in Active Nematics
• Spatial bunching of same-charge polarization singularities in two-dimensional random vector waves
• Boundaries control active channel flows
• Topological transition in filamentous cyanobacteria: from motion to structure
• Active topological defect absorption by a curvature singularity
• Vortex pattern stabilization in thin films resulting from shear thickening of active suspensions
• Hydrodynamic theory of flocking at a solid-liquid interface: long range order and giant number fluctuations
• Active nematic gel with quenched disorder
• Quadrupolar active stress induces exotic phases of defect motion in active nematics
• Lattice-Boltzmann simulation of free nematic-isotropic interfaces
• Vortex line entanglement in active Beltrami flows
• Interrogating the Ballistic Regime in Liquids with Rotational Optical Tweezers
• Memory effects, arches and polar defect ordering at the cross-over from wet to dry active nematics
• Spontaneous flow created by active topological defects
• Nematic order condensation and topological defects in inertial active nematics
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• Filamentous Active Matter: Band Formation, Bending, Buckling, and Defects