Old page but still very cute : World’s smallest silicon mechanical devices are made at Cornell…Smallest guitar, about the size of a human blood cell, illustrates the technology for nano-sized electromechanical devices.

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.Photo by D. Carr and H. Craighead, Cornell.The above image (508 x 327 pixels) is the digital image created by the electron microscope, and is the highest-resolution version available.