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    • Molecule-sized gears on outside of a carbon nanotube shaft.
    Rights: National Aeronautics and Space Administration (NASA) Published 30 May 2008 Size: 120 KB Referencing Hub media

    Molecule-sized gears attached to the outside of a carbon nanotube shaft. An electric field will make a shaft turn. This is a computer model, but research is under way to make the real thing.

    Author: NASA Ames Research Center

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