World's smallest radio fits in the palm of the hand...of an ant
Single carbon nanotube is fully functional radio, receiving music over standard radio bandwidth 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, according to Eurekalert, the news service of the American Association for the Advancement of Science. 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. Developed at the National Science Foundation's (NSF) Center of Integrated Nanomechanical Systems, a research team led by Alex Zettl o