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IBM researchers have built the first integrated circuit based on graphene, a breakthrough the company says could herald a future based on graphene wafers instead of silicon. The circuit, a 10 gigahertz frequency mixer, could give wireless devices greater range. At higher frequencies, the technology could someday allow law enforcement and medical personnel to see inside objects or people without the harmful effects of X-rays, according to IBM.
The circuit was built on a silicon carbide wafer and consists of graphene field-effect transistors. Last year, the same IBM team demonstrated the first graphene-based transistor, capable of operating at 100 GHz, but this time they integrated it into a complete circuit.