Regensburg 2016 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 30: Poster - Complex nonlinear systems

DY 30.3: Poster

Tuesday, March 8, 2016, 18:15–21:00, Poster C

Frustrated magnetic clutches – do they really work? — •Simeon Völkel and Ingo Rehberg — Experimentalphysik V, Universität Bayreuth, 95440 Bayreuth, Germany

It has been proposed to construct new types of couplings and gears based on the interaction of magnetic multipoles. These couplings exploit a continuous degenerate ground state for the chosen arrangement of the multipoles.[1]

We study experimentally the structural stability of the most basic realization of such a coupling consisting in two magnetic dipoles, where each of them is mounted perpendicularly to its dipole moment on a shaft that allows for rotation around this fixed axis. While the first magnet is driven by a motor, the second magnet rotates freely. Depending on the relative arrangement, co-rotating, counterrotating and chaotic regimes are found.

[1] Johannes Schönke, Smooth teeth: Why multipoles are perfect gears, to be published in Phys. Rev. Appl.