Dresden 2017 – scientific programme
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BP: Fachverband Biologische Physik
BP 46: Active Matter II (Joint Session DY/BP/CPP)
BP 46.1: Invited Talk
Thursday, March 23, 2017, 09:30–10:00, HÜL 186
Rolling, rolling, rolling -- a new self-propulsion mechanism — •Falko Ziebert1,2 and Igor Kulic2 — 1Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, 79104 Freiburg, Germany — 2Institut Charles Sadron UPR22-CNRS, 67034 Strasbourg Cedex 2, France
We describe a generic mechanism that induces an instability towards rolling motion of a rod along a heated plate. The mechanism, relying on geometric planar confinement, can be explained by an effective model combining elasticity of a rod with thermal advection-diffusion. We exemplify the versatility of the effect by investigating self-propellers, as well as simple motors and energy storage devices, both experimentally and theoretically.