Propagation and relaxation of tension in stiff polymers.
We present a unified theory for the longitudinal dynamic response of a stiff polymer in solution to various external perturbations (mechanical excitations, hydrodynamic flows, electrical fields, temperature quenches, etc.) that can be represented as sudden changes of ambient/boundary conditions. The theory relies on a comprehensive analysis of the nonequilibrium propagation and relaxation of backbone stresses in a wormlike chain. We recover and substantially extend previous results based on heuristic arguments. New experimental implications are pointed out.
Hallatschek
Oskar
O
Hahn-Meitner Institut, Glienicker Strasse 100, 14109 Berlin, Germany.
Frey
Erwin
E
Kroy
Klaus
K