Crunching biofilament rings

@article{Fierling2014CrunchingBR,
  title={Crunching biofilament rings},
  author={Julien Fierling and Martin Michael M{\"u}ller and Herv'e Mohrbach and Albert Johner and Igor M. Kuli'c},
  journal={Europhysics Letters},
  year={2014},
  volume={107}
}
We discuss a curious example for the collective mechanical behavior of coupled non-linear monomer units entrapped in a circular filament. Within a simple model we elucidate how multistability of monomer units and exponentially large degeneracy of the filament's ground state emerge as a collective feature of the closed filament. Surprisingly, increasing the monomer frustration, i.e., the bending prestrain within the circular filament, leads to a conformational softening of the system. The… 

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An extended review of recent numerical and analytical studies on semiflexible chains near surfaces undertaken at Institut Charles Sadron with a focus on static properties, and a number of augmented models, like the (super) helical WLC model, the polymorphic model of microtubules and a model with (strongly) nonlinear flexural elasticity are presented.

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