The carbon nanotube radio consists of an individual carbon nanotube mounted to an electrode in close proximity to a counter-electrode, with a DC voltage source, such as from a battery or a solar cell array, connected to the electrodes for power. The applied DC bias creates a negative electrical charge on the tip of the nanotube, sensitizing it to oscillating electric fields. Both the electrodes and nanotube are contained in vacuum, in a geometrical configuration similar to that of a conventional vacuum tube.
Incoming radio waves cause the tube to vibrate. The tube itself can be "tuned" to respond to vibrations that match certain frequencies, or "channels" on the radio dial.
Incoming radio waves cause the tube to vibrate. The tube itself can be "tuned" to respond to vibrations that match certain frequencies, or "channels" on the radio dial.
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