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Membranes in rod solutions: a system with spontaneously broken symmetry

K. Yaman, P. Pincus, C. M. Marques

cond-mat.mtrl-sciarXiv:cond-mat/9611201

Abstract

We consider a dilute solution of infinitely rigid rods near a curved, perfectly repulsive surface and study the contribution of the rod depletion layer to the bending elastic constants of membranes. We find that a spontaneous curvature state can be induced by exposure of BOTH sides of the membrane to a rod solution. A similar result applies for rigid disks with a diameter equal to the rod's length. We also study the confinement of rods in spherical and cylindrical repulsive shells. This helps elucidate a recent discussion on curvature effects in confined quantum mechanical and polymer systems.

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