Tube Width Fluctuations in F-Actin Solutions
arXiv:0910.5864 · doi:10.1103/PhysRevLett.105.037801
Abstract
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.
Final version, 5 pages, 4 figures
References in corpus (5)
- Entanglement, elasticity and viscous relaxation of actin solutions
- Micro- and Macrorheological Properties of Isotropically Cross-linked Actin Networks
- Dynamics of semi-flexible polymer solutions in the highly entangled regime
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- Direct observation of the tube model in F-actin solutions
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- Persistence-Length Renormalization of Polymers in a Crowded Environment of Hard Disks
- Dynamically Crowded Solutions of Infinitely Thin Brownian Needles
- Tube width fluctuations of entangled stiff polymers
- Tube Concept for Entangled Stiff Fibers Predicts Their Dynamics in Space and Time
- Cooperative polymer dynamics at the crossover between the unentangled and the entangled regimes: theoretical predictions of scattering and linear shear relaxation for polyethylene melts
- Measuring structural parameters of crosslinked and entangled semiflexible polymer networks with single-filament tracing