Dynamic Theory of Pearling Instability in Cylindrical Vesicles
Abstract
We give a simple theory for recent experiments of Bar-Ziv and Moses% Phys. Rev. Lett. 73 (1994) 1392, in which tubular vesicles are excited using laser tweezers to a ``peristaltic'' state. Considering the hydrodynamics of a bilayer membrane under tension, we reproduce some of the qualitative behavior seen and find a value for the wavelength of the instability in terms of independently measured material parameters, in rough agreement with the experimental values.
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