Www.sciencemag.org/content/332/6035/1294.full.pdf. 2008-12-19 IBM Scientists Develop World's Fastest Graphene Transistor. YORKTOWN HEIGHTS, NY - 19 Dec 2008: IBM (NYSE:IBM) Researchers today announced that they demonstrated the operation of graphene field-effect transistors at GHz frequencies, and achieved the highest frequencies reported so far using this novel non-silicon electronic material. This accomplishment is an important milestone for the Carbon Electronics for RF Applications (CERA) program sponsored by DARPA, as part of the effort to develop the next-generation of communication devices. Graphene is a special form of graphite, consisting of a single layer of carbon atoms packed in honeycomb lattice, similar to an atomic scale chicken wire. Graphene has attracted immense worldwide attention and activities because its unusual electronic properties may eventually lead to vastly faster transistors than any transistors achieved so far.
The work is performed by inter-disciplinary collaboration at IBM T. J. Waston Research Center. Www.stanford.edu/group/cui_group/papers/107 Guihua graphene supercap.PDF.