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Scientists have created the biggest computer chip yet made from carbon nanotubes: rolled up sheets of atom-thick graphene that conduct electricity at super-fast speeds.

Some researchers hope that carbon nanotubes could be used in future computers, because they conduct electricity faster and more efficiently than silicon. Until now, engineers have increased the power and speed of ordinary silicon computer processors by shrinking the size of switches known as transistors, but they are now reaching a fundamental limit.

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Category: Science