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Abstract: A phase-field model for dealing with dynamic instabilities in membranes ispresented. We use it to study curvature-driven pearling instability in vesiclesinduced by the anchorage of amphiphilic polymers on the membrane. Within thismodel, we obtain the morphological changes reported in recent experiments. Theformation of a homogeneous pearled structure is achieved by consequent pearlingof an initial cylindrical tube from the tip. For high enough concentration ofanchors, we show theoretically that the homogeneous pearled shape isenergetically less favorable than an inhomogeneous one, with a large sphereconnected to an array of smaller spheres.



Autor: F. Campelo, A. Hernandez-Machado

Fuente: https://arxiv.org/







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