Reading the paper, it seems less useful than perhaps imagined. They claim to be able to reversibly add hydrogen to change the properties of the graphene. This d

Reading the paper, it seems less useful than perhaps imagined. They claim to be able to reversibly add hydrogen to change the properties of the graphene. This does not seem to lend itself to fast-switching transistors (it seems that the reversal requires ~450C, and hydrogenating requires several hours to fully saturate the graphene. The big issue is that they have appeared to create a configurable resistor, not a semiconductor. Unless major breakthroughs are made, I doubt that this will be able to replace silicon as the fundamental technology behind computers.