The world's tiniest radio is a step closer to reality.
US scientists have unveiled a detector thousands of times smaller than the diameter of a human hair that can translate radio waves into sound.
According to a University of California team, the study marks the first time that a nano-sized detector has been demonstrated in a working radio system.
Made of carbon nanotubes a few atoms across, it is almost 1,000 times smaller than current radio technology.
Peter Burke and Chris Rutherglen incorporated the microscopic detector into a complete radio system.
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http://news.bbc.co.uk/2/hi/science/nature/7050477.stm