Berlin 2005 – scientific programme
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AKB: Biologische Physik
AKB 100: Poster Session I
AKB 100.28: Poster
Saturday, March 5, 2005, 16:45–18:45, Poster TU D
Dynamics of Driven Polymers — •Xaver Schlagberger1,2 and Roland Netz1,2 — 1Physics Dept., LMU München, Theresienstrasse 37, D-80333 München — 2Physics Dept., TU München, James Franck Str., D-85748 Garching
Using hydrodynamic simulation methods and scaling arguments we consider an elastic rod which is moving in a gravitational or electric field through a quiescent fluid in the low-Reynolds-number limit. Hydrodynamic effects lead to rod bending and orientation perpendicular to the direction of motion, similar to what is seen in anomalous electric birefringence experiments on TM and FD viruses or polyelectrolytes. Static and dynamic scaling relations for the mean orientation as a function of rod length and elasticity are established. We also investigate the experimentally observed unfolding of polyelectrolyte coils in electric fields.