Scientists have created the worlds smallest electric motor, made from a single molecule. The tiny gadget is expected to lead to new devices that can be used in medicine and engineering. The microscopic motor is just one nanometre across, about 60,000 times smaller than the width of a human hair. Team leader Dr Charles Sykes, from Tufts University in Boston, US, said: There has been significant progress in the construction of molecular motors powered by light and by chemical reactions, but this is the first time that electrically-driven molecular motors have been demonstrated, despite a few theoretical proposals. We have been able to show that you can provide electricity to a single molecule and get it to do something that is not just random. The scientists, who describe their achievement in the journal Nature Nanotechnology, used a state-of-the-art low temperature scanning tunnelling microscope, which uses electrons instead of light to see molecules. ON