Buckling instability for a charged and fluctuating semiflexible polymer

Details Buckling instability for a charged and fluctuating semiflexible polymer Buckling instability for a charged and fluctuating semiflexible polymer

2011-02-02

arxiv.org/abs/1102.0521v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

In this article we address the problem of Euler's buckling instability in a charged semi-flexible polymer that is under the action of a compressive force. We consider this instability as a phase transition and investigate the role of thermal fluctuations in the buckling critical force. By performing molecular dynamic simulations, we show that the critical force decreases when the temperature increases. Repulsive electrostatic interaction in the finite temperature is in competition with thermal fluctuations to increase the buckling threshold.

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