Activity Induced Nematic Order in Isotropic Liquid Crystals

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We use linear stability analysis to show that an isotropic phase of elongated particles with dipolar flow fields can develop nematic order as a result of their activity. We argue that ordering is favoured if the particles are flow-aligning and is strongest if the wavevector of the order perturbation is neither parallel nor perpendicular to the nematic director. Numerical solutions of the hydrodynamic equations of motion of an active nematic confirm the results. The instability is contrasted to the well-known hydrodynamic instability of an ordered active nematic.

Original languageEnglish
JournalJournal of Statistical Physics
Volume180
Issue number1-6
Pages (from-to)699-709
Number of pages11
ISSN0022-4715
DOIs
Publication statusPublished - 12 Feb 2020

    Research areas

  • Active nematics, Hydrodynamic instability, Liquid crystals, TOPOLOGICAL DEFECTS, TRANSITION, SELECTION, DYNAMICS, ONSET, FLOW

ID: 248235517