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Lasers could illuminate band gap for graphene

Graphene: famous for being a Nobel Prize prompting wonder material, and for having no band gap. The lack of band gap means graphene’s future as a possible replacement for silicon has always looked bleak, because a band gap is the property that allows a transistor to be switched on and off.

June 20, 2011 by

IBM clocks graphene transistor at 155GHz

IBM has demonstrated a new super whizzy graphene transistor, clocking in at 155GHz, up from the 100GHz it benched last year.The breakthrough was made possible because the transistor was set on a substrate of "diamond-like carbon", itself layered on a commercial silicon wafer.

April 10, 2011 by

Researchers demo triple-mode graphene transistor

Researchers at Rice University and the University of California, Riverside have taken advantage of another quirk in graphene's arsenal, ambipolarity, to build and test a triple mode transistor, that could lead to yet smaller and cooler (not in the iPod sense) wireless devices.Conventionally, ability of a transistor to conduct either electrons (negative charge) or holes (positive charge) is fixed during fabrication.

October 25, 2010 by

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