BBC: Researchers from Australia and the US have created a transistor a mere seven atoms in size and only four-billionths of a meter across. Although not the smallest ever created, it is embedded in a single silicon crystal and is 10 times smaller than those used in contemporary computers. The ongoing goal of computer hardware development has been to make machines that are faster, cheaper, and able to store more data. Michelle Simmons at the University of New South Wales and coworkers, who published their results in Nature Nanotechnology, hope that their tiny transistor will lead to the development of a solid-state quantum computer.