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February 27, 2009

World's smallest radio consists of 1 carbon nanotube — listen to it play 'Layla'

Listen here.

The world's smallest and simplest radio was created by Alex Zettl's group at the University of California, Berkeley.

Here's a link to Ed Regis's article in the March 2009 Scientific American about the minuscule device.

Here's the abstract of the October 2007 Nano Letters paper which first described it.

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Nanotube Radio





We have constructed a fully functional, fully integrated radio receiver from a single carbon nanotube. The nanotube serves simultaneously as all essential components of a radio: antenna, tunable band-pass filter, amplifier, and demodulator. A direct current voltage source, as supplied by a battery, powers the radio. Using carrier waves in the commercially relevant 40−400 MHz range and both frequency and amplitude modulation techniques, we demonstrate successful music and voice reception.

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Images and movies of the nanotube radio can be found at Zettl's group's website.

February 27, 2009 at 10:01 AM | Permalink

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