Dynamics of defects in active nematics

Abstract

Defect dynamics in a thin active nematic layer is studied by asymptotic matching of solutions in the defect core and the far field. The analysis is facilitated by the correspondence between the 2D nematic and complex scalar field models. Self-propulsion and topological interactions are identified as the primary drivers of the defect motion, surpassing the influence of both passive backflow and active flow induced by other defects.

References in corpus (3)

• Defect annihilation and proliferation in active nematics
• Velocity Correlations in an Active Nematic
• Hydrodynamic interaction in confined geometries

Cited by in corpus (47)

• Topological active matter
• Active matter
• Nonequilibrium Physics in Biology
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• Instabilities and Topological Defects in Active Nematics
• Data-driven quantitative modeling of bacterial active nematics
• Defect unbinding in active nematics
• Correlation lengths in hydrodynamic models of active nematics
• Orientational properties of nematic disclinations
• Probing the shear viscosity of an active nematic
• Hydrodynamics of Active Defects: from order to chaos to defect ordering
• Three-Dimensional Active Defect Loops
• Design of nematic liquid crystals to control microscale dynamics
• Defect-Mediated Phase Transitions in Active Soft Matter
• Geometry and mechanics of disclination lines in 3D nematic liquid crystals
• Vortex formation and dynamics of defects in shells of active nematics
• Hydrodynamic instabilities in active cholesteric liquid crystals
• Theory of defect motion in 2D passive and active nematic liquid crystals
• Active boundary layers
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• Emergent Structures in an Active Polar Fluid : dynamics of shape, scattering and merger
• Phase Separation and Emergent Structures in an Active Nematic
• Spontaneous rotation can stabilise ordered chiral active fluids
• Design rules for controlling active topological defects
• Pair creation, motion, and annihilation of topological defects in 2D nematics
• Chiral active hexatics: Giant number fluctuations, waves and destruction of order
• The role of fluid flow in the dynamics of active nematic defects
• Molecular-scale substrate anisotropy and crowding drive long-range nematic order of cell monolayers
• Dynamics of active nematic defects on the surface of a sphere
• Designing, Synthesizing and Modeling Active Fluids
• Aspects of the density field in an active nematic
• Fluctuations can induce local nematic order and extensile stress in monolayers of motile cells
• Flow around topological defects in active nematic films
• Spontaneous formation of chaotic protrusions in a polymerizing active gel layer
• Metric theory of nematoelastic shells
• Active nematic defects in compressible and incompressible flows
• Multi-defect Dynamics in Active Nematics
• Self-propulsion of an active polar drop
• Analytical model for the motion and interaction of two-dimensional active nematic defects
• Topological signatures of collective dynamics and turbulent-like energy cascades in apolar active granular
• Turbulence to order transitions in activity patterned active nematics
• Anti-hyperuniform Critical States of Active Topological Defects
• Spontaneous flow created by active topological defects
• The importance of being discrete -- An agent-based model for active nematics and more