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Nanotechnology devices: Molecular machines shift into gear 
the Foresight Institute | Wed, Nov 4
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An atomically precise gear, rotated by pushing the teeth one at a time with a STM tip.
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Opinion: Complex Nanotube Circuits
1) Grow the nanotubes on a separate substrate, then stamp them onto the circuit. This lets the circuit stay at low temperatures. By contrast, nanotubes are single, precise molecules being assembled to build up useful larger systems. This is a lot closer to the original meaning of the word.
Sat, Dec 26 | from Responsible Nanotechnology
