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CPP: Chemische Physik und Polymerphysik

CPP 10: POSTER Nonequilibrium Phenomena in Soft Condensed Matter

CPP 10.4: Poster

Dienstag, 28. März 2006, 17:00–19:00, P3

Hydrodynamic simulations of polymers at surfaces — •Christian Sendner and Roland Netz — Physik Department, TU Muenchen, James Franck Strasse, 85748 Garching

We investigate the dynamics of a semiflexible polymer at a surface in the low-Reynolds-number limit. We include full hydrodynamic interactions between polymer segments and the boundary. The response of the polymer to external electric fields as well as to shear flow at finite temperatures is considered, using simulations and scaling arguments. Hydrodynamic interactions influence the conformation of the polymer leading to orientation effects and an effective repulsion from the surface. This might be useful for controlled desorption of short DNA strands in DNA-chip applications.