Nanoscience takes one more step forward as the first single-molecule computer circuit was just built by United States researchers. Take a look at the picture here and you'll see the circuit which is so tiny it measures less than a fifth of the width of a human hair. It was assembled on a single carbon nanotube, and even though it can only achieve a poky speed of 50MHz, that's 100,000 times faster than any other devices that have ever been made with carbon nanotubes.
http://news.bbc.co.uk/1/hi/sci/tech/4839088.stm
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