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Innovation

Transistors? Pah. IBM demos complete graphene circuit

IBM, having wowed us all in April with graphene transistors that run at 155GHz, has gone one step further and now reports success in building a high-speed, graphene-based circuit.The researchers, writing in the June 10 issue of Science, describe how they deposited multiple layers of graphene on a silicon wafer.
Written by Lucy Sherriff, Contributor on

IBM, having wowed us all in April with graphene transistors that run at 155GHz, has gone one step further and now reports success in building a high-speed, graphene-based circuit.

The researchers, writing in the June 10 issue of Science, describe how they deposited multiple layers of graphene on a silicon wafer. Into that surface, the etched field effect transistors and inductors. The final product was a graphene only broadband frequency mixer circuit; kit that is widely used in communications devices to switch frequencies.

The New York Times reports that the scientists “demonstrated frequency mixing up to speeds of 10 gigahertz”, while engadget exclaims that the circuit takes up “less room than a grain of salt”.

All exciting stuff, indeed. We're after more details from IBM, and will update this blog when we have them.

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