Bio-mimicking rotary nanomotors

Anatoly Smirnov; Lev Murokh; Sergey Savel'ev; Franco Nori

doi:10.1117/12.821567

28 May 2009 Bio-mimicking rotary nanomotors

Anatoly Smirnov, Lev Murokh, Sergey Savel'ev, Franco Nori

Proceedings Volume 7364, Nanotechnology IV; 73640D (2009) https://doi.org/10.1117/12.821567
Event: SPIE Europe Microtechnologies for the New Millennium, 2009, Dresden, Germany

Abstract

We propose a simple design of a rotary nanomotor comprised of three quantum dots attached to the rotating ring (rotor) in the presence of an in-plane dc electric field. The quantum dots (sites) can be coupled to or decoupled from source and drain carrier reservoirs, depending on the relative positions of the leads and the dots. We derive equations for the site populations and solve these equations numerically jointly with the Langevin-type equation for the rotational angle. It is shown that the synchronous loading and unloading of the sites results in unidirectional rotation of the nanomotor. The corresponding particle current, torque, and energy conversion efficiency are determined. Our studies are applicable both to biologically-inspired rotary nanomotors, the F₀ motor of ATP synthase and the bacterial flagellar motor, which use protons as carriers, and to novel artificial semiconductor systems using electrons. The efficiency of this semiconductor analog of the rotary biomotors is up to 85% at room temperature.

Citation Download Citation

Anatoly Smirnov, Lev Murokh, Sergey Savel'ev, and Franco Nori "Bio-mimicking rotary nanomotors", Proc. SPIE 7364, Nanotechnology IV, 73640D (28 May 2009); https://doi.org/10.1117/12.821567

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