Electrically generated eddies at an eightfold stagnation point within a nanopore.
Electrically generated eddies at an eightfold stagnation point within a nanopore.
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DOI：
10.1063/1.4901984
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发表时间：
2014-11
影响因子：
4.6
通讯作者：
J. Sherwood;M. Mao;S. Ghosal
中科院分区：
文献类型：
--
作者：
J. Sherwood;M. Mao;S. Ghosal
对被圆柱形孔刺穿的薄介电板周围产生的电流进行数值计算。几何形状代表膜中单个纳米孔的几何形状。当膜不带电时，流动仅归因于感应电荷电渗，并且纳米孔拐角处的高场产生涡流。这些漩涡在停滞点相遇。如果几何形状选择正确，驻点会合并形成一个驻点，在该驻点处，四个流线在一个点处交叉，八个涡流会合。
Electrically generated flows around a thin dielectric plate pierced by a cylindrical hole are computed numerically. The geometry represents that of a single nanopore in a membrane. When the membrane is uncharged, flow is due solely to induced charge electroosmosis, and eddies are generated by the high fields at the corners of the nanopore. These eddies meet at stagnation points. If the geometry is chosen correctly, the stagnation points merge to form a single stagnation point at which four streamlines cross at a point and eight eddies meet.