Waddling and somersault motion of an adsorbed polymer in external fields
Institut für Theoretische Physik II, Heinrich-Heine-Universität - Düsseldorf Universitätsstrasse 1, D-40225 Düsseldorf, Germany
Accepted: 22 December 2010
The dynamics of an adsorbed polymer chain along the substrate is studied using Brownian dynamics computer simulations of a bead-spring model. The polymer is end-functionalized and exposed both to a linear shear flow and an external field oscillatory in time which couples oppositely to the end beads and acts normal to the substrate. Different propagation modes are identified including a waddling-like and somersault-like polymer motion.
PACS: 83.10.Mj – Molecular dynamics, Brownian dynamics / 83.50.Ax – Steady shear flows, viscometric flow / 82.35.Gh – Polymers on surfaces; adhesion
© EPLA, 2011