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Coiling Instabilities Of Multilamellar Tubes, Christian Santangelo, P. Pincus
Coiling Instabilities Of Multilamellar Tubes, Christian Santangelo, P. Pincus
Christian Santangelo
Myelin figures are densely packed stacks of coaxial cylindrical bilayers that are unstable to the formation of coils or double helices. These myelin figures appear to have no intrinsic chirality. We show that such cylindrical membrane stacks can develop an instability when they acquire a spontaneous curvature or when the equilibrium distance between membranes is decreased. This instability breaks the chiral symmetry of the stack and may result in coiling. A unilamellar cylindrical vesicle, on the other hand, will develop an axisymmetric instability, possibly related to the pearling instability.