Activity Induced Nematic Order in Isotropic Liquid Crystals
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Activity Induced Nematic Order in Isotropic Liquid Crystals. / Santhosh, Sreejith; Nejad, Mehrana R.; Doostmohammadi, Amin; Yeomans, Julia M.; Thampi, Sumesh P.
I: Journal of Statistical Physics, Bind 180, Nr. 1-6, 12.02.2020, s. 699-709.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Activity Induced Nematic Order in Isotropic Liquid Crystals
AU - Santhosh, Sreejith
AU - Nejad, Mehrana R.
AU - Doostmohammadi, Amin
AU - Yeomans, Julia M.
AU - Thampi, Sumesh P.
PY - 2020/2/12
Y1 - 2020/2/12
N2 - 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.
AB - 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.
KW - Active nematics
KW - Hydrodynamic instability
KW - Liquid crystals
KW - TOPOLOGICAL DEFECTS
KW - TRANSITION
KW - SELECTION
KW - DYNAMICS
KW - ONSET
KW - FLOW
U2 - 10.1007/s10955-020-02497-0
DO - 10.1007/s10955-020-02497-0
M3 - Journal article
VL - 180
SP - 699
EP - 709
JO - Journal of Statistical Physics
JF - Journal of Statistical Physics
SN - 0022-4715
IS - 1-6
ER -
ID: 248235517