Berlin 2015 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 9: Biomaterials and Biopolymers I (joint BP/CPP)
BP 9.5: Vortrag
Montag, 16. März 2015, 15:30–15:45, EB 202
How to escape the maze — •Teresa Behl1, Felix Höfling2, and Thomas Franosch3 — 1Arnold Sommerfeld Center for Theoretical Physics (ASC) and Center for NanoScience (CeNS), Department of Physics, Ludwig-Maximilians-Universität, München — 2Max Planck Institute for Intelligent Systems, Stuttgart, and Institut für Theoretische und Angewandte Physik, Universität Stuttgart — 3Institut für Theoretische Physik, Leopold-Franzens-Universität Innsbruck, Austria
Recently, novel materials such as carbon nanotubes extended the interest in the diffusion dynamics of semiflexible polymers far beyond classical biophysics. Semiflexible polymers form entangled networks when dispersed in solution by virtue of their lengthy nature. Due to their relative stiffness they exhibit a reptation movement to escape their local surrounding maze of crossing polymers, usually modelled as a tube constraining the polymer sterically.
We have investigated the dynamics of a semiflexible polymer via computer simulations of a 2D bead-rod-algorithm. Point obstacles mimic the cross sections of the surrounding polymers with the plane in which the polymer diffuses. Extensive computer simulations are performed to resolve the slow disentanglement processes. In particular we measure the translational and rotational diffusion for a broad density range. Furthermore, we discuss the intermediate scattering function and the chances and limitations of the performed simulations.