Berlin 2012 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 37: Poster: Rheology (joint focus with DRG)

CPP 37.1: Poster

Thursday, March 29, 2012, 18:45–19:45, Poster A

Active fluids in Taylor Couette Systems — •Matthias Mußler, Albrecht Ott, and Christian Wagner — Universität des Saarlandes, Saarbrücken

The behavior of active fluids is poorly understood. Here we study experimentally the hydrodynamic behavior of active polar gels using the methods of rheology and particle tracking (PT) in a Taylor-Couette Geometry. Taylor-Couette hydrodynamics are well-understood for passive fluids, such as polymer solutions. Active fluids are expected to show deviations from passive behavior. Micro-swimmer suspensions of Chlamydomonas Reinhardtii are suitable model systems for studying active fluids. The presence of active swimmers increased the viscosity and is not yet understood. Experiments using the methods of Rheology and Optical Tweezers are performed to study these systems.