Scientists created functioning transistor from a single atom

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In an incredible nanoengineering breakthrough, Australian and American physicists created a working transistor from a single phosphorus atom. The development could one day lead to quantum computers, which would be substantially smaller and faster than those of today.
The achievement is noteworthy for another reason: It challenges Moore’s law, which states that the number of transistors that can be placed on an integrated circuit will double roughly every two years. (More on that in a second.) more...