Silicon Is Reaching its Limits. Up Next: Carbon Nanotubes

Silicon has powered the information age, but it’s reaching its physical limits. Carbon nanotubes (CNTs) hold a lot of promise as a replacement if we can get around some key obstacles—and the designers of a new chip seem to have done just that. For decades computer power steadily increased in line with Moore’s Law, which observed that the number of transistors in a chip doubled roughly every two years.

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