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Model for curvature-driven pearling instability in membranes
Campelo, F.; Hernández Machado, Aurora
Universitat de Barcelona
A phase-field model for dealing with dynamic instabilities in membranes is presented. We use it to study curvature-driven pearling instability in vesicles induced by the anchorage of amphiphilic polymers on the membrane. Within this model, we obtain the morphological changes reported in recent experiments. The formation of a homogeneous pearled structure is achieved by consequent pearling of an initial cylindrical tube from the tip. For high enough concentration of anchors, we show theoretically that the homogeneous pearled shape is energetically less favorable than an inhomogeneous one, with a large sphere connected to an array of smaller spheres.
12-06-2010
Dinàmica de fluids
Biofísica
Biophysics
Fluid dynamics
(c) American Physical Society, 2007
Artículo
American Physical Society
         

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