Deformation of vesicles under the influence of strong electric fields

The deformation of vesicles with conducting membranes in external electric fields has been studied in the framework of the perturbation theory. A simple model for dynamics of deformation is proposed, and the results of numerical calculations for typical combinations of the vesicle size and the electric field are presented. When the conductivity inside a spherical vesicle is larger than that of the exterior medium, the deformations, both static and dynamic, are prolate and, otherwise, they are oblate.