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Polymer drift in a solvent by force acting on one polymer end

Stepanow, Semjon and Kikuchi, Norio (2008) Polymer drift in a solvent by force acting on one polymer end. In: Journal of Statistical Mechanics: Theory and Experiment .

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Official URL: http://iopscience.iop.org/1742-5468/2008/04/P04002...

Abstract

We investigate the effect of hydrodynamic interactions on the non-equilibrium drift dynamics of an ideal flexible polymer pulled by a constant force applied at one polymer end using the perturbation theory and the renormalization group method. For moderate force, if the polymer elongation is small, the hydrodynamic interactions are not screened and the velocity and the longitudinal elongation of the polymer are computed using the renormalization group method. Both the velocity and elongation are nonlinear functions of the driving force in this regime. For large elongation we found two regimes. For large force but finite chain length L the hydrodynamic interactions are screened. For large chain lengths and a finite force the hydrodynamic interactions are only partially screened, which in three dimensions results in unusual logarithmic corrections to the velocity and the longitudinal elongation.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Institute of Physics.
Keywords: polymer elasticity;dynamics;driven diffusive;systems.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 30 Mar 2010 09:59
Last Modified: 19 Sep 2010 05:58
URI: http://eprints.iisc.ernet.in/id/eprint/26677

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