A pair of researchers at UC Irvine look to be out to make a name for themselves in the increasingly-crowded field of nanotechnology, with them now announcing that they've developed the first nano-scale radio. While the entire setup obviously isn't nano-sized (as you can see above), the demodulator portion of it most definitely is, measuring thousands of time smaller than a human hair. Despite that diminutive size, the demodulator apparently has no trouble translating AM radio waves into sound using nothing more than carbon nanotubes, as you can see and hear for yourself in the video available via the Extreme Tech article linked below.

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UC Irvine researchers tout first nano-scale radio