On-Off Intermittency and Stochastic Stability in Nematics Driven by Multiplicative Noise

摘要: We describe pattern formation due to electrohydrodynamic convection in nematic liquid crystals driven by a stochastic electric voltage. If the characteristic times of system are well separated from correlation time noise, onset roll is sharp, similar case deterministic driving. these comparable as it typical for pure driving one observes outbursts spatially regular which interrupt quiescent (laminar) periods. At sample stability threshold distribution laminar periods power law with exponent -3/2 over several decades. thus have first example on-off intermittency extended dissipative system.