论文标题
手性细菌涡旋中的边缘电流和配对顺序过渡
Edge Current and Pairing Order Transition in Chiral Bacterial Vortex
论文作者
论文摘要
我们报告了通过油水界面密封的ACHIRAL圆形微孔，报告细菌涡流的手性旋转方向的选择性稳定。这种破碎的对称性源自流体动力学不同的顶部和底部表面附近细菌游泳的内在手性，会在横向边界处产生细菌的手性边缘电流，并随着细菌密度的增加而变得更强烈。我们证明了手性边缘电流有利于相互作用涡流的共旋转配置，从而增强了它们的排序。细菌的内在手性与边界的几何特性之间的相互作用是活性湍流的配对阶跃迁的键功能。
We report the selective stabilization of chiral rotational direction of bacterial vortices, from turbulent bacterial suspension, in achiral circular microwells sealed by an oil-water interface. This broken-symmetry, originating from the intrinsic chirality of bacterial swimming near hydrodynamically different top and bottom surfaces, generates a chiral edge current of bacteria at lateral boundary and grows stronger as bacterial density increases. We demonstrate that chiral edge current favors co-rotational configurations of interacting vortices, enhancing their ordering. The interplay between the intrinsic chirality of bacteria and the geometric properties of the boundary is a key-feature for the pairing order transition of active turbulence.
