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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 — positively huge compared to these newest structures, where the guitar string is about 50 to 100 nanometers in diameter.