Active nematic materials with substrate friction

Abstract

Active turbulence in dense active systems is characterized by high vorticity on a length scale that is large compared to that of individual entities. We describe the properties of active turbulence as momentum propagation is screened by frictional damping. As friction is increased, the spacing between the walls in the nematic director field decreases as a consequence of the more rapid velocity decays. This leads to, first, a regime with more walls and an increased number of topological defects, and then to a jammed state in which the walls deliminate bands of opposing flow, analogous to the shear bands observed in passive complex fluids.

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Cited by in corpus (38)

• Active Turbulence
• Stabilization of active matter by flow-vortex lattices and defect ordering
• Defect-mediated morphologies in growing cell colonies
• Data-driven quantitative modeling of bacterial active nematics
• Multiscale polar theory of microtubule and motor-protein assemblies
• Universal scaling of active nematic turbulence
• Active colloids in liquid crystals
• Active turbulence in active nematics
• Insensitivity of active nematic dynamics to topological constraints
• Analytical structure, dynamics, and coarse-graining of a kinetic model of an active fluid
• Confinement controlled bend instability of three-dimensional active fluids
• Design of nematic liquid crystals to control microscale dynamics
• Negative stiffness and modulated states in active nematics
• Multiscale modeling and simulation of microtubule/motor protein assemblies
• Understanding dense active nematics from microscopic models
• Data-driven discovery of active nematic hydrodynamics
• Active nematics with anisotropic friction: the decisive role of the flow aligning parameter
• Critical Phenomena in Active Matter
• Defect Spirograph: Dynamical Behavior of Defects in Spatially Patterned Active Nematics
• Scaling regimes of active turbulence with external dissipation
• Dynamical Sub-classes of Dry Active Nematics
• The role of advective inertia in active nematic turbulence
• Catapulting of topological defects through elasticity bands in active nematics
• Vertex model with internal dissipation enables sustained flows
• Vorticity phase separation and defect lattices in the isotropic phase of active liquid crystals
• Friction mediated phase transition in confined active nematics
• Axisymmetric monopole and dipole flow singularities in proximity of a stationary no-slip plate immersed in a Brinkman fluid
• Traction and Stress Control Formation and Motion of +1/2 Topological Defects in Epithelial Cell Monolayers
• Hydrodynamics of thermal active matter
• Flow patterns and defect dynamics of active nematics under an electric field
• Chiral active systems near a substrate: Emergent damping length controlled by fluid friction
• Swarming bottom feeders: Flocking at solid-liquid interfaces
• Boundaries control active channel flows
• Active nematic gel with quenched disorder
• Turbulence to order transitions in activity patterned active nematics
• Anti-hyperuniform Critical States of Active Topological Defects
• On the temperature of an active nematic
• Machine Learning Forecasting of Active Nematics