Live soap: stability, order, and fluctuations in apolar active smectics.

作者: Tapan Chandra Adhyapak , Sriram Ramaswamy , John Toner

DOI: 10.1103/PHYSREVLETT.110.118102

关键词: Suspension (chemistry)Stability (probability)Hydrodynamic theoryMaterials scienceLiquid crystalReentrancyOrder (biology)Condensed matter physics

摘要: We construct a hydrodynamic theory of noisy, apolar active smectics in bulk suspension or on substrate. Unlike purely orientationally ordered fluids, can be dynamically stable Stokesian suspensions. Smectic order these systems is quasilong ranged dimension d = 2 and long 3. predict reentrant Kosterlitz-Thouless melting to an nematic our simplest model 2, nonzero second-sound speed parallel the layers suspensions, that there are no giant number fluctuations either case. also briefly discuss possible instabilities systems. DOI: 10.1103/PhysRevLett.110.118102

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