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Published online 30 October 2002 | Nature | doi:10.1038/news021028-3
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Molecular wheel gets a brake
Switch turns microscopic motor on and off.
Scientists have redesigned one of nature's molecular machines to make the world's smallest switchable motor. The rotating machine can be turned on and off like a pocket fan - but it is only about 14 millionths of a millimetre across1.
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