Dresden 2011 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 23: Biopolymers and Biomaterials III (with CPP)
BP 23.1: Vortrag
Mittwoch, 16. März 2011, 15:00–15:15, ZEU 260
Spontaneous Flows of Active Polar Gels between two Rotating Cylinders — •Marc Neef1, Sebastian Fürthauer2, Stephan Grill2, Frank Jülicher3, and Karsten Kruse1 — 1Theoretische Physik, Universität des Saarlandes, 66041 Saarbrücken — 2Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden — 3Max-Planck-Institute for the Physics of Complex Systems, 01187 Dresden
Active Biological matter, e.g. cell tissues or the cytoskeleton can flow spontaneously. In situations, where the material is confined, the flow pattern depends on the geometry of the domain and the boundary conditions, as well as on the system's active properties. We investigate the influence of these factors by theoretically analyzing the equations of motion for active polar fluids in the space between two coaxial cylinders that rotate at a given frequency. In striking contrast to the behavior of uniform flows in open geometries, we find that in the confined case, activity can also stabilize uniform flow patterns.