Anisotropy of the crossover between electrostatic attraction and repulsion of biological cells

作者：Murovec T; Brosseau C^*

来源：Applied Physics Letters, 2013, 103(19): 193702.

DOI：10.1063/1.4829476

By applying an ac electric field to a pair of layered concentric shells, a prototypical model of biological cells, we demonstrate that the sign and magnitude of the time averaged electrostatic force (EF) are strongly dependent on the field frequency. Crossover frequencies (CFs) occur when EFs vanish. Unique physical features of CF bands are studied as function of field frequency and gap distance between cells. The distance between cells corresponding to the CF shows both anisotropic and universal features. The ability to control the long-range EFs and CFs opens up exciting prospective applications including the deposition of biological cells under field excitation in an architecture that could create functional tissue.

• 出版日期2013-11-4