Comment on 'Statistical mechanics of developable ribbons' by L. Giomi and L. Mahadevan

Details Comment on 'Statistical mechanics of developable ribbons' by L. Giomi and L. Mahadevan Comment on 'Statistical mechanics of developable ribbons' by L. Giomi and L. Mahadevan

2011-11-08

arxiv.org/abs/1111.2029v1

Phys. Rev. Lett. 107, 239801 (2011) 1p

Physics

Condensed Matter

Soft Condensed Matter

1 page, no figures

Scientific paper

10.1103/PhysRevLett.107.239801

Giomi and Mahadevan [Phys. Rev. Lett. 104, 238104 (2010)] study the statistical mechanics of elastic ribbons and claim to provide evidence for "an underlying helical structure" of ribbon-like polymers even in the absence of intrinsic curvature (or, in the authors' words, "of a preferential zero-temperature twist"). They find a persistence length that is over three times that of a wormlike chain having the same bending rigidity. We show that these results are an artefact of the authors' flawed formulation, which produces a helical bias, and that no support for the described effect can be claimed.

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