Live Soap: Stability, Order, and Fluctuations in Apolar Active Smectics
Live Soap: Stability, Order, and Fluctuations in Apolar Active Smectics
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DOI：
10.1103/physrevlett.110.118102
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发表时间：
2013-03-15
影响因子：
8.6
通讯作者：
Toner, John
中科院分区：
文献类型：
--
作者：
Adhyapak, Tapan Chandra;Ramaswamy, Sriram;Toner, John
We construct a hydrodynamic theory of noisy, apolar active smectics in bulk suspension or on a substrate. Unlike purely orientationally ordered active fluids, active apolar smectics can be dynamically stable in Stokesian bulk suspensions. Smectic order in these systems is quasilong ranged in dimension d = 2 and long ranged in d = 3. We predict reentrant Kosterlitz-Thouless melting to an active nematic in our simplest model in d = 2, a nonzero second-sound speed parallel to the layers in bulk suspensions, and that there are no giant number fluctuations in either case. We also briefly discuss possible instabilities in these systems. DOI: 10.1103/PhysRevLett.110.118102
