A figure depicting the structure of stacked memristors with dimensions that could satisfy the Feynman Grand Challenge
In 1959 Richard Feynman, in his talk “Plenty of Room at the Bottom,” spoke of a future in which tiny machines could perform huge feats. Like many forward-looking concepts, his molecule and atom-sized world remained for years in the realm of science fiction. And then, scientists and other creative thinkers began to realize Feynman’s nanotechnological visions. In the spirit of Feynman’s insight engineers at UC Santa Barbara have developed a design for a functional nanoscale computing device. The concept involves a dense, 3D circuit operating on an unconventional type of logic that could, theoretically, be packed into a block no bigger than 50 nm on any side.
Key to this devel...
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