http://www.abc.net.au/science/news/stories/2007/1837795.htm
Scottish physicist Professor James Clerk Maxwell first imagined an atom-size
device dubbed Maxwell's demon in 1867.
Now scientists at the University of Edinburgh have made it a reality.
"We have a new motor mechanism for a nanomachine," says David Leigh, a
professor of chemistry at the university.
A nanomachine is an incredibly tiny device whose parts consist of single
molecules. Nature uses nanomachines for everything from photosynthes
