Smallest Musical Instrument
What is the world\'s smallest musical instrument?
The nanoguitar, constructed by Harold Craighead and Dustin Carr, is a working guitar as big as a red blood cell. Its strings are only 100 atoms wide!
The ten-micron-long guitar is made out of a single crystal of silicon. Its six strings can be plucked by a tool called an atomic force microscope, but the 7-megahertz vibrations produced are far too fast and weak to be heard by human ears.
The tiny guitar is just for fun, but the technology used to create it could be useful for making extremely small machines of many kinds.