FAST COMMUNICATION A DYNAMIC MODEL OF OPEN VESICLES IN FLUIDS

A hydrodynamic model of open vesicles in solution is presented to study the enlarge- ment and shrinkage of a pore in a biological lipid membrane. The vesicle is modeled by diffusive interfaces. Transport equations permitting consistent treatment of the pore and pore rim are intro- duced. Dynamic simulations implemented by the finite difference method show the evolution of a pore in stretched vesicles. Simulation results include direct visualization of the membrane shape, water motion, and dissipation of energy. Comparison is made with data obtained from microscopy experiments.

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