Friday, November 02, 2007

Radio Crafted From Carbon Nanotube

LiveScience reports on a breakthrough that could lead to radio-controlled nanobots.

Researchers led by Alex Zetttl at the University of California, Berkeley have crafted a fully working radio from a single carbon nanotube 10,000 times thinner than a human hair.

Carbon nanotubes are man-made microscopic mesh rods composed entirely of carbon atoms.

Fixed between two electrodes, the nanotube vibrates and performs the four critical roles required to receive radio waves: antenna, tunable filter, amplifier and demodulator. Power is supplied by streaming electrons from an attached battery.

Its inventors have already used it to broadcast two songs: "Layla" by Derek and the Dominos and "Good Vibrations" by the Beach Boys.

Later, the researchers were astounded when the tiny radio unexpectedly picked up a short, two-word message - "More Clapton".

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