25 Sep '13, 5pm

First Computer Made From Carbon Nanotubes Debuts

First Computer Made From Carbon Nanotubes Debuts

To make a process that could work in a commercial chip fab, the Stanford team developed a set of techniques they dub imperfection-immune design. They first eliminated the metallic nanotubes on their wafer by turning off all of the semiconducting nanotubes and driving a high current through the circuits. This caused the metallic nanotubes to overheat, oxidize, and ultimately vaporize into small puffs of carbon dioxide. The team then etched away sections of the mat of remaining nanotubes to form circuits. This etching was guided by an algorithm, based on graph theory, that can produce circuits that are mathematically guaranteed to work regardless of any imperfections, Mitra says, by cutting off at least part of any possible cross-cutting nanotube.

Full article: http://spectrum.ieee.org/tech-talk/semiconductors/devices...

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