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FROM:
Lane C. McConnell, Petia M. Vlahovska and Michael J. Miksis,
“Vesicle dynamics in uniform electric fields: Squaring and breathing”, Soft Matter, Vol. 11, No. 24, pp 4840-4846, 2015, http://dx.doi.org/10.1039/C5SM00585J
ABSTRACT: We computationally investigate the dynamics of a vesicle exposed to uniform DC or AC electric fields. We employ the two-dimensional boundary integral method in order to simulate vesicle deformation under experimental conditions where peculiar drum-like (“squared”) shapes have been observed. The vesicle membrane is modeled as an infinitely thin, capacitive, area-incompressible interface, with the surrounding fluids acting as leaky dielectrics. Our simulations capture the “squaring” phenomenon, in which vesicles deform into rectangular profiles with corner-like regions of high curvature, as vesicles undergo dynamic transitions between oblate and prolate ellipsoidal shapes.
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