Biphasic, Lyotropic, Active Nematics

Abstract

We perform dynamical simulations of a two-dimensional active nematic fluid in coexistence with an isotropic fluid. Drops of active nematic become elongated, and an effective anchoring develops at the nematic-isotropic interface. The activity also causes an undulatory instability of the interface. This results in defects of positive topological charge being ejected into the nematic, leaving the interface with a diffuse negative charge. Quenching the active lyotropic fluid results in a steady state in which phase-separating domains are elongated and then torn apart by active stirring.

7 pages, 8 figures

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• Morphology and flow patterns in highly asymmetric active emulsions
• Chaotic and periodical dynamics of active chiral droplets
• Spontaneous rotation of active droplets in two and three dimensions
• Edge instability in incompressible planar active fluids
• Asymmetric fluctuations and self-folding of active interfaces
• Active nematics on flat surfaces: from droplet motility and scission to active wetting
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• Active turbulence and spontaneous phase separation in inhomogeneous extensile active gels
• Director alignment at the nematic-isotropic interface: elastic anisotropy and active anchoring
• Anchoring-driven spontaneous rotations in active gel droplets
• Phase separation dynamics in deformable droplets
• Traveling waves at the surface of active liquid crystals
• Vortex Lattices in Active Nematics with Periodic Obstacle Arrays
• Self-propulsion of active droplets without liquid-crystalline order
• Activity induced isotropic-polar transition in active liquid crystals
• Uncovering novel phase transitions in dense dry polar active fluids using a lattice Boltzmann method
• Coupling Turing stripes to active flows
• Phase Ordering in Binary Mixtures of Active Nematic Fluids
• Mechanochemical Topological Defects in an Active Nematic
• Simulating dynamics of ellipsoidal particles using lattice Boltzmann method
• Phases and correlations in active nematic granular systems
• Dynamically asymmetric and bicontinuous morphologies in active emulsions
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• Quadrupolar active stress induces exotic phases of defect motion in active nematics
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• Phase Separation in Mixtures of Nematic and Isotropic Fluids
• Interfacial instability of confined 3D active droplets
• Global Existence and Regularity for the Active Liquid Crystal System
• Global Weak Solutions for the Compressible Active Liquid Crystal System