The world's smallest guitar is 10 micrometers
long -- about the size of a single cell -- with six strings each
about 50 nanometers, or 100 atoms, wide. Made by Cornell University
researchers from crystalline silicon, it demonstrates a new technology
for a new generation of electromechanical devices.
The guitar has six strings, each string about 50 nanometers wide,
the width of about 100 atoms. If plucked -- by an atomic force microscope,
for example -- the strings would resonate, but at inaudible frequencies.
The entire structure is about 10 micrometers long, about the size
of a single human blood cell.
A nanometer is one-billionth of a meter. For comparison, the diameter
of a human hair is about 200 micrometers, or 200,000 nanometers.