We 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. Moreover, the antenna and
tuner are implemented in a radically different manner than traditional
radios, receiving signals via high frequency mechanical vibrations of the
nanotube rather than through traditional electrical means.