Berlin 2014 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 13: Posters 3: Cold Molecules, Helium Nano Droplets, and Experimental Techniques

MO 13.31: Poster

Mittwoch, 19. März 2014, 16:30–18:30, Spree-Palais

Dynamics of a nano-electromechanical rotor driven by single-electron tunneling — •Alan Celestino, Pablo Carlos López Vázquez, and Alexander Eisfeld — MPIPKS, Dresden, Germany

We discuss a nano-electromechanical rotor driven by single-electron tunneling. A possible realization could be a nanotube with quantum dots attached on its extremities, which can freely rotate about a double-walled nanotube axis. The system is driven using a bias voltage between source and drain contacts. Using a few relevant parameters one can set the rotor's dynamics to either intermittent oscillations/rotations or continuous rotational motion. The connection between the dynamical regimes and the current through the device is established. The effect of tuning initial conditions is also addressed, showing a bistable behaviour in the system's phase space. Among the possible applications of such device stand out the signal amplification, current rectification and viscosity measurements.

[1] A. Croy and A. Eisfeld, EPL (Europhys Lett) 98, 68004