论文标题
活性列凝胶与猝灭障碍
Active nematic gel with quenched disorder
论文作者
论文摘要
通过淬火疾病，我们引入了悬浮在不可压缩的液体中的二维主动命名。我们为缓慢变量的粗粒流体动力方程式编写，即。密度，方向和流场。引入了淬火障碍，使其在每个点都与局部方向相互作用。疾病强度从零调整为大值。我们从数值上研究缺陷动力学和系统的动力学，发现有限疾病会减慢订单。流体的存在在方向场中引起大波动，从而进一步干扰了订购。由于流体而引起的方向场的大波动是如此之主，以至于降低了淬火障碍的作用。我们还发现，系统中主动应力的收缩性和扩展性质几乎相同。这项研究可以帮助{\ color {black}}了解淬灭{\ color {black}疾病}对活性凝胶的有序动力学与成分对象之间的nematic相互作用的影响。
With quenched disorder, we introduce two-dimensional active nematics suspended in an incompressible fluid. We write the coarse-grained hydrodynamic equations of motion for slow variables, viz. density, orientation and flow fields. The quenched disorder is introduced such that it interacts with the local orientation at every point with some strength. Disorder strength is tuned from zero to large values. We numerically study the defect dynamics and system's kinetics and find that the finite disorder slows the ordering. The presence of fluid induces large fluctuation in the orientation field, further disturbing the ordering. The large fluctuation in the orientation field due to the fluid is so dominant that it reduces the effect of the quenched disorder. We have also found that the disorder's effect is almost the same for both the contractile and extensile nature of active stresses in the system. This study can help {\color{black} to} understand the impact of quenched {\color{black} disorder} on the ordering kinetics of active gels with nematic interaction among the constituent objects.
