Some researchers at the Lawrence Berkeley National Laboratory have constructed "a fully functional, fully integrated radio receiver, orders-of-magnitude smaller than any previous radio, from a single carbon nanotube. The single nanotube serves, at once, as all major components of a radio: antenna, tuner, amplifier, and demodulator."

"The nanotube radio’s extremely small size could enable radical new applications such as radio controlled devices small enough to exist in the human bloodstream, or simply smaller, cheaper, and more efficient wireless devices such as cellular phones."

They’ve provided short videos of this little bugger playing Layla, Good Vibrations, and the Star Wars theme. [Thanks, Trish]