Micromini Radio

摘要

A carbon nanotube 10,000 times as thin as a human hair turns radio waves into music, acting like a tiny radio, in this image (wavy lines added) taken by researchers at the University of California, Irvine. AM radio waves cause the tube to vibrate; then an electric field forces electrons-that is, an electrical current-out of its tip. The current detects the vibrations, converting the waves to sound.