Conformational transformations induced by the charge-curvature interaction at finite temperature

Details Conformational transformations induced by the charge-curvature interaction at finite temperature Conformational transformations induced by the charge-curvature interaction at finite temperature

2008-10-13

arxiv.org/abs/0810.2216v1

Physics

Condensed Matter

Other Condensed Matter

23 pages (Latex), 10 figures (Postscript), 2 biblio file (bib-file and bbl-file)

Scientific paper

10.1103/PhysRevE.78.051908

The role of thermal fluctuations on the conformational dynamics of a single closed filament is studied. It is shown that, due to the interaction between charges and bending degrees of freedom, initially circular aggregates may undergo transformation to polygonal shape. The transition occurs both in the case of hardening and softening charge-bending interaction. In the former case the charge and curvature are smoothly distributed along the chain while in the latter spontaneous kink formation is initiated. The transition to a non-circular conformation is analogous to the phase transition of the second kind.

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