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15 papers · 1 filter
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…
Critical dynamics of ballistic and Brownian particles in a heterogeneous environment
Felix Höfling, Tobias Munk, Erwin Frey +1
The dynamic properties of a classical tracer particle in a random, disordered medium are investigated close to the localization transition. For Lorentz models obeying Newtonian and…
Force distributions and force chains in random stiff fiber networks
Claus Heussinger, Erwin Frey
We study the elasticity of random stiff fiber networks. The elastic response of the fibers is characterized by a central force stretching stiffness as well as a bending stiffness t…
Coupling of transverse and longitudinal response in stiff polymers
Benedikt Obermayer, Oskar Hallatschek
The time-dependent transverse response of stiff polymers, represented as weakly-bending wormlike chains (WLCs), is well-understood on the linear level, where transverse degrees of…
Nonaffine rubber elasticity for stiff polymer networks
C. Heussinger, B. Schaefer, E. Frey
We present a theory for the elasticity of cross-linked stiff polymer networks. Stiff polymers, unlike their flexible counterparts, are highly anisotropic elastic objects. Similar t…