Stretching semiflexible filaments with quenched disorder

Details Stretching semiflexible filaments with quenched disorder Stretching semiflexible filaments with quenched disorder

2010-06-18

arxiv.org/abs/1006.3698v2

Phys. Rev. E 82, 050802(R) (2010)

Physics

Condensed Matter

Soft Condensed Matter

5 pages, minor changes, added references, final version as published in PRE

Scientific paper

10.1103/PhysRevE.82.050802

We study the effect of quenched randomness in the arc-length dependent spontaneous curvature of a wormlike chain under tension. In the weakly bending approximation in two dimensions, we obtain analytic results for the force-elongation curve and the width of transverse fluctuations. We compare quenched and annealed disorder and conclude that the former cannot always be reduced to a simple change in the stiffness of the pure system. We also discuss the effect of a random transverse force on the stretching response of a wormlike chain without spontaneous curvature.

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