Vesicle electrohydrodynamics
arXiv:1011.2995 · doi:10.1103/PhysRevE.83.046309
Abstract
A small amplitude perturbation analysis is developed to describe the effect of a uniform electric field on the dynamics of a lipid bilayer vesicle in a simple shear flow. All media are treated as leaky dielectrics and fluid motion is described by the Stokes equations. The instantaneous vesicle shape is obtained by balancing electric, hydrodynamic, bending, and tension stresses exerted on the membrane. We find that in the absence of ambient shear flow, it is possible that an applied step--wise uniform DC electric field could cause the vesicle shape to evolve from oblate to prolate over time if the encapsulated fluid is less conducting than the suspending fluid. For a vesicle in ambient shear flow, the electric field damps the tumbling motion leading to a stable tank-treading state.
15 pages, 7 figures
References in corpus (8)
- A New Method for Measuring Edge Tensions and Stability of Lipid Bilayers: Effect of Membrane Composition
- Non-inertial lateral migration of vesicles in bounded Poiseuille flow
- Dynamics of a viscous vesicle in linear flows
- Electrohydrodynamic model of vesicle deformation in alternating electric fields
- Dynamics and rheology of a dilute suspension of vesicles: higher order theory
- Hydrodynamic lift of vesicles under shear flow in microgravity
- Visualization of membrane loss during the shrinkage of giant vesicles under electropulsation
- Frequency-dependent electrodeformation of giant phospholipid vesicles in AC electric field
Cited by in corpus (8)
- Hydrodynamic Coupling of Particle Inclusions Embedded in Curved Lipid Bilayer Membranes
- Electrohydrodynamics of Three-Dimensional Vesicles: A Numerical Approach
- A transient solution for vesicle electrodeformation and relaxation
- Dynamics of Three-Dimensional Vesicles in DC Electric fields
- A numerical model for the trans-membrane voltage of vesicles
- The effect of AC electric field on the dynamics of a vesicle under shear flow in the small deformation regime
- A model for the electric field-driven deformation of a drop or vesicle in strong electrolyte solutions
- Electrohydrodynamics of deflated vesicles: budding, rheology and pairwise interactions