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6 papers · 2 filters
A freely relaxing polymer remembers how it was straightened
B. Obermayer, W. Mobius, O. Hallatschek +2
The relaxation of initially straight semiflexible polymers has been discussed mainly with respect to the longest relaxation time. The biologically relevant non-equilibrium dynamics…
Effective Perrin theory for the anisotropic diffusion of a strongly hindered rod
Tobias Munk, Felix Höfling, Erwin Frey +1
Slender rods in concentrated suspensions constitute strongly interacting systems with rich dynamics: transport slows down drastically and the anisotropy of the motion becomes arbit…
Spontaneous Unknotting of a Polymer Confined in a Nanochannel
Wolfram Mobius, Erwin Frey, Ulrich Gerland
We study the dynamics of a knot in a semiflexible polymer confined to a narrow channel of width comparable to the polymers' persistence length. Using a combination of Brownian dyna…
Entangled Dynamics of a Stiff Polymer
Felix Höfling, Tobias Munk, Erwin Frey +1
Entangled networks of stiff biopolymers exhibit complex dynamic response, emerging from the topological constraints that neighboring filaments impose upon each other. We propose a…
Anisotropic memory effects in confined colloidal diffusion
Sylvia Jeney, Branimir Lukić, Jonas A. Kraus +2
The motion of an optically trapped sphere constrained by the vicinity of a wall is investigated at times where hydrodynamic memory is significant. First, we quantify, in bulk, the…
Microscale fluid flow induced by thermoviscous expansion along a traveling wave
Franz M. Weinert, Jonas A. Kraus, Thomas Franosch +1
The thermal expansion of a fluid combined with a temperature-dependent viscosity introduces nonlinearities in the Navier-Stokes equations unrelated to the convective momentum curre…