Rick, I don't know about the graphene side of things, but as an fyi, the carbon nanotubes leverage an SOI wafer -- I wrote about this in ASN a couple years ago. IBM "fabricated trenches made of hafnium oxide onto SOI wafers, which allows the self-assembly by the carbon nanotubes into neat rows rather than a spaghetti-like tangle." (see http://bit.ly/XPEFXc)
Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.