The smallest transistor ever built — probably the smallest that can ever be built — uses a single phosphorus atom, in a breakthrough that could be one more step on the path toward functional quantum computers. Single atoms have served as transistors in other studies, but this is the first time researchers were able to engineer its location and apply a voltage in a controlled fashion.
Nanocomputers have been around for decades as a concept, but in actual practice they’ve been harder to come by. Now, engineers collaborating at Harvard and the MITRE Corporation have taken a huge step forward for the field of nanocomputing by creating the world’s first programmable nanoprocessor.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.