Daily Teabag

Harnessing the electrical and mechanical properties of the carbon nanotube, a team of researchers has crafted a working radio from a single fiber of that material.

Fixed between two electrodes, the vibrating tube successfully performed the four critical roles of a radio–antenna, tunable filter, amplifier and demodulator–to tune in a radio signal generated in the room and play it back through an attached speaker.

Functional across a bandwidth widely used for commercial radio, the tiny device could have applications far beyond novelty, from radio-controlled devices that could flow in the human bloodstream to highly efficient, miniscule, cell phone devices.

World’s Smallest Radio Fits in the Palm of the Hand . . . of an Ant

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