Tube Concept for Entangled Stiff Fibers Predicts Their Dynamics in Space and Time

Sebastian Leitmann, Felix Höfling, and Thomas Franosch
Phys. Rev. Lett. 117, 097801 – Published 25 August 2016
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Abstract

We study dynamically crowded solutions of stiff fibers deep in the semidilute regime, where the motion of a single constituent becomes increasingly confined to a narrow tube. The spatiotemporal dynamics for wave numbers resolving the motion in the confining tube becomes accessible in Brownian dynamics simulations upon employing a geometry-adapted neighbor list. We demonstrate that in such crowded environments the intermediate scattering function, characterizing the motion in space and time, can be predicted quantitatively by simulating a single freely diffusing phantom needle only, yet with very unusual diffusion coefficients.

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  • Received 20 May 2016

DOI:https://doi.org/10.1103/PhysRevLett.117.097801

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Physics of Living Systems

Authors & Affiliations

Sebastian Leitmann1, Felix Höfling2, and Thomas Franosch1,*

  • 1Institut für Theoretische Physik, Universität Innsbruck, Technikerstraße 21A, A-6020 Innsbruck, Austria
  • 2Fachbereich Mathematik und Informatik, Freie Universität Berlin, Arnimallee 6, 14195 Berlin, Germany

  • *thomas.franosch@uibk.ac.at

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Issue

Vol. 117, Iss. 9 — 26 August 2016

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