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Proceedings Paper

Bio-mimicking rotary nanomotors
Author(s): Anatoly Smirnov; Lev Murokh; Sergey Savel'ev; Franco Nori
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Paper 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.

Paper Details

Date Published: 28 May 2009
PDF: 8 pages
Proc. SPIE 7364, Nanotechnology IV, 73640D (28 May 2009); doi: 10.1117/12.821567
Show Author Affiliations
Anatoly Smirnov, The Institute of Physical and Chemical Research (RIKEN) (Japan)
The Univ. of Michigan (United States)
Lev Murokh, Queens College, CUNY (United States)
Sergey Savel'ev, The Institute of Physical and Chemical Research (RIKEN) (Japan)
Loughborough Univ. (United Kingdom)
Franco Nori, The Institute of Physical and Chemical Research (RIKEN) (Japan)
Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 7364:
Nanotechnology IV
Achim Wixforth, Editor(s)

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