Tube Width Fluctuations in F-Actin Solutions

Details Tube Width Fluctuations in F-Actin Solutions Tube Width Fluctuations in F-Actin Solutions

2009-10-30

arxiv.org/abs/0910.5864v3

Phys. Rev. Lett. 105, 037801 (2010)

Physics

Condensed Matter

Soft Condensed Matter

Final version, 5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.105.037801

We determine the statistics of the local tube width in F-actin solutions, beyond the usually reported mean value. Our experimental observations are explained by a segment fluid theory based on the binary collision approximation (BCA). In this systematic generalization of the standard mean-field approach effective polymer segments interact via a potential representing the topological constraints. The analytically predicted universal tube width distribution with a stretched tail is in good agreement with the data.

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