Marenduzzo D, Orlandini E, Yeomans J M
SUPA, School of Physics, University of Edinburgh, Mayfield Road, Edinburgh EH9 3JZ, United Kingdom.
Phys Rev Lett. 2007 Mar 16;98(11):118102. doi: 10.1103/PhysRevLett.98.118102.
We report numerical studies of the hydrodynamics and rheology of an active liquid crystal. We confirm the existence of a transition between a passive and an active phase, with spontaneous flow in steady state. We explore how the velocity profile changes with activity, and we point out the difference in behavior for flow-aligning and tumbling materials. We find that an active material can thicken or thin under a flow, or even exhibit both behaviors as the forcing changes.
我们报告了对活性液晶流体动力学和流变学的数值研究。我们证实了在被动相和主动相之间存在一种转变，在稳态下有自发流动。我们探究了速度分布如何随活性变化，并且指出了流动取向材料和翻滚材料在行为上的差异。我们发现活性材料在流动下可能会变稠或变稀，甚至随着外力变化呈现出两种行为。
