Carbon Nanotube Electron Windmills: A Novel Design for Nanomotors

Details Carbon Nanotube Electron Windmills: A Novel Design for Nanomotors Carbon Nanotube Electron Windmills: A Novel Design for Nanomotors

2008-06-09

arxiv.org/abs/0806.1468v1

Physics

Condensed Matter

Materials Science

10 pages and 4 figures

Scientific paper

10.1103/PhysRevLett.100.256802

We propose a new drive mechanism for carbon nanotube (CNT) motors, based upon the torque generated by a flux of electrons passing through a chiral nanotube. The structure of interest comprises a double-walled CNT, formed from, for example, an achiral outer tube encompassing a chiral inner tube. Through a detailed analysis of electrons passing through such a "windmill", we find that the current due to a potential difference applied to the outer CNT generates sufficient torque to overcome the static and dynamic frictional forces that exists between the inner and outer walls, thereby causing the inner tube to rotate.

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