Effective elasticity of a flexible filament bound to a deformable cylindrical surface

Details Effective elasticity of a flexible filament bound to a deformable cylindrical surface Effective elasticity of a flexible filament bound to a deformable cylindrical surface

2010-05-13

arxiv.org/abs/1005.2429v1

Phys. Rev. Lett. 104, 226101 (2010)

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevLett.104.226101

We use numerical simulations to show how a fully flexible filament binding to a deformable cylindrical surface may acquire a macroscopic persistence length and a helical conformation. This is a result of the nontrivial elastic response to deformations of elastic sheets. We find that the filament's helical pitch is completely determined by the mechanical properties of the surface, and can be tuned by varying the filament binding energy. We propose simple scaling arguments to understand the physical mechanism behind this phenomenon and present a phase diagram indicating under what conditions one should expect a fully flexible chain to behave as a helical semi-flexible filament. Finally, we discuss the implications of our results.

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