Phys. Rev. Lett. 94, 247208 (2005) [4 pages]Controllable High-Speed Rotation of NanowiresReceived 3 March 2005; published 24 June 2005 We report a versatile method for executing controllable high-speed rotation of nanowires by ac voltages applied to multiple electrodes. The rotation of the nanowires can be instantly switched on or off with precisely controlled rotation speed (to at least 1800 rpm), definite chirality, and total angle of rotation. We have determined the torque due to the fluidic drag force on nanowire of different lengths. We also demonstrate a micromotor using a rotating nanowire driving a dust particle into circular motion. This method has been used to rotate magnetic and nonmagnetic nanowires as well as carbon nanotubes. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.247208
DOI:
10.1103/PhysRevLett.94.247208
PACS:
85.85.+j, 47.15.Gf, 61.46.+w
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