July 24, 2003
Scientists have built an electric rotor with a gold blade 300 nanometers long. This sits atop an axle made from a multiwalled carbon nanotube; gold electrodes at either end of the axle lash the device to a silicon chip.
Applying a voltage between the nanotube and one of three more electrodes around it rotates the blade. The nanotube rotor can operate at great speed, over a wide range of… read more