Dresden 2011 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 9: Poster: Biopolymers and Biomaterials

CPP 9.4: Poster

Montag, 14. März 2011, 17:30–19:30, P2

Wrinkling of cross-linked semiflexible polymer networks — •Pascal Müller and Jan Kierfeld — Physics Department, TU Dortmund, Dortmund

Filamentous protein networks and their elastic properties play an important role in cell mechanics. We simulate regular and random two-dimensional networks of crosslinked semiflexible rods in order to gain a basic understanding of wrinkling, which occurs when such networks of semiflexible polymers are sheared. Although the initial configurations are strictly two-dimensional, displacement into the third dimension results in lower energies compared to flat networks and leads to the formation of wrinkles under shear.

We find that amplitude and wavelength of wrinkles are determined by stiffness and bending rigidity of the rods as well as global parameters like the density of the network and the applied shear stress.