Pismen Len M, Sagués Francesc
Department of Chemical Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel.
Departament of Materials Science and Physical Chemistry, Institut de Nanociència i Nanotecnologia, Universitat de Barcelona, Martí Franquès 1, 08028, Barcelona, Spain.
Eur Phys J E Soft Matter. 2017 Oct 26;40(10):92. doi: 10.1140/epje/i2017-11582-8.
We consider active flow and dynamics of topological defects in an active nematic interfacial layer confined between immissible viscous fluid layers. The velocity of defects is determined by asymptotic matching of solutions in the defect core and the far field. Self-propulsion of positive defects along the direction of their "comet tails" is identified as the principal deterministic component of defect dynamics, while topological and hydrodynamic interactions among mobile defects is responsible for quasi-random jitter.
我们研究了限制在不混溶粘性流体层之间的活性向列相界面层中的活性流和拓扑缺陷动力学。缺陷的速度由缺陷核心和远场中解的渐近匹配确定。正缺陷沿其“彗尾”方向的自推进被确定为缺陷动力学的主要确定性成分，而移动缺陷之间的拓扑和流体动力学相互作用则导致了准随机抖动。
