Physicists Create a Working Transistor From a Single Atom and Transistor Made Using a Single Atom May Help Beat Moore’s Law articles tells that Australian and American scientists have taken a first early step toward creating a working transistor using a single phosphorus atom. The atom was etched into a silicon bed with “gates” to control electrical flow and metallic contacts to apply voltage, researchers reported in the journal Nature Nanotechnology. It is the first such device to be precisely positioned using a repeatable technology. “To me, this is the physical limit of Moore’s Law,” Klimeck said in a statement. “We can’t make it smaller than this.”
This was not the first single atom transistor. About two years ago, a team of researchers from the Helsinki University of Technology, the University of New South Wales, and the University of Melbourne in Australia announced the creation of a single-atom transistor designed around a single phosphorus atom in silicon.
Repeatable technology opens up the possibility that the method can be automated and single-atom transistors could be manufactured, according to the group at the University of New South Wales. Single-atom transistor built with precise control article tells that the lab members used a scanning tunneling microscope to manipulate atoms at the surface of a silicon crystal. Then with a lithographic process, they laid phosphorous atoms onto the silicon substrate.
Single-Atom Transistor Is End of Moore’s Law; May Be Beginning of Quantum Computing article tells that some scientists believe that single-atom transistor could lead the way to building a quantum computer that works by controlling the electrons and thereby the quantum information, or qubits. Some other scientists, however, have doubts that such a device can ever be built.
I think this invention will lead to many more discoveries.