Berlin 2012 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 18: Posters: Statistical Physics in Biological Systems
BP 18.7: Poster
Mittwoch, 28. März 2012, 17:30–19:30, Poster A
Thin Films of chiral Fluids — •Sebastian Fürthauer1,2, Maria Strempel1,2, Stephan W. Grill1,2, and Frank Jülicher1 — 1Max Planck Institut für die Physik komplexer Systeme, Dresden — 2Max Planck Institut für Molekulare Zellbiologie und Genetik, Dresden
Hydrodynamic flows in biological systems are often generated by active chiral processes near or on surfaces. Important examples are beating cilia, force generation in actomyosin networks, and motile bacteria interacting with surfaces. We develop a coarse grained description of active chiral films that captures generic features of flow and rotation patterns driven by chiral motors. We discuss force and torque balances within the film and on the surface and highlight the role of the intrinsic rotation field. We arrive at a two dimensional effective theory and discuss our results in the context of ciliary carpets and thin films of bacterial suspensions.