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Excluded Volume Effects on Semiflexible Ring Polymers

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journal contribution
posted on 2010-04-14, 00:00 authored by Fabian Drube, Karen Alim, Guillaume Witz, Giovanni Dietler, Erwin Frey
Two-dimensional semiflexible polymer rings are studied both by imaging circular DNA adsorbed on a mica surface and by Monte Carlo simulations of phantom polymers as well as of polymers with finite thickness. Comparison of size and shape of the different models over the full range of flexibilities shows that excluded volume caused by finite thickness induces an anisotropic increase of the main axes of the conformations, a change of shape, accomplished by an enhanced correlation along the contour.