For those of you that haven't seen this yet, Researchers from Purdue, the University of Melbourne and the University of New South Wales have created a working transistor from a single atom. Thanks to Robert for the link. We have fabricated a single-atom transistor in which a single phosphorus atom is positioned between highly doped source and drain leads with a lateral spatial accuracy of ±1 atomic lattice spacing. We demonstrate that we are able to register source, drain and gate contacts to the individual donor atom and observe well-controlled transitions for 0, 1 and 2 electron states, in agreement...