Berlin 2012 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
DY: Fachverband Dynamik und Statistische Physik
DY 1: Statistical Physics of Biological Systems I (with BP, talks from DY)
DY 1.13: Talk
Monday, March 26, 2012, 12:45–13:00, MA 001
Active microswimmers with spatially varying self-propulsion — •Aljoscha Hahn1, Giovanni Volpe2,3, Clemens Bechinger2,3, and Holger Stark1 — 1Technische Universität Berlin, Germany — 2Max-Planck-Institut für intelligente Systeme, Stuttgart, Germany — 3Universität Stuttgart, Germany
The statistical physics of active microswimmers, which are capable of propelling themselves through a viscous environment, is intensively investigated at the present time. Recently, Janus particles were studied in a subcritical mixture [1] and it was found that the speed of self-propulsion can be controlled by the strength of illumination. In particular, a spatially varying light intensity induces a spatially varying self-propulsion. Based on the Smoluchowski equation, we study how active particles with a position dependent swimming speed behave and speculate about a novel type of ratchet.
[1] G. Volpe et al, Soft Matter 7, 8810 (2011)