Jul
06
2008

The shrinking radio: Courtesy Zettl Research Group, Lawrence Berkeley National Laboratory and University of California at Berkeley.
The shrinking radio: Courtesy Zettl Research Group, Lawrence Berkeley National Laboratory and University of California at Berkeley.Courtesy Zettl Research Group

Tiniest radio yet

A fully integrated radio receiver, orders-of-magnitude smaller than any previous radio, was made from a single carbon nanotube (CNT).

When a radio wave of a specific frequency impinges on the nanotube it begins to vibrate vigorously. An electric field applied to the nanotube forces electrons to be emitted from its tip.

This nanotube radio is over 10,000,000,000,000,000,000 times smaller than the Philco vacuum tube radio from the 1930s.

The single nanotube serves, at once, as all major components of a radio: antenna, tuner, amplifier, and demodulator. (Berkely physics research)

See and hear a nano radio

Videos from an electron microscope view of the nanotube radio playing two different songs are linked below.

Your Comments, Thoughts, Questions, Ideas

Candace's picture
Candace says:

wow. I didn't know that was even possible!

posted on Tue, 11/11/2008 - 9:14pm
SLC's picture
SLC says:

Is that even real?? That seem so impossible that their is the smallest radio cause that would be very cool if we even have that at all. How can your even fit all that little things inside it and how can you be able to turn it on?

posted on Mon, 12/08/2008 - 12:52pm

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