ARMONK, NY – IBM researchers have designed a high-speed circuit made of graphene, a broadband frequency mixer built on a silicon wafer, the first known complete circuit derived from the material.

With graphene, IBM has established frequency mixing up to speeds of 10 GHz, the researchers asserted in the latest issue of Science. Possible applications include high-bandwidth communication and smartphone and TV displays.

The scientists, who previously built resistors and inductors using the material, said the current challenge is learning consistent ways to create large amounts of the graphene film.

http://www.sciencemag.org/content/332/6035/1294.abstract?sid=1dd2f1f3-4b65-4c20-8155-f34a73ec5446