Not to mention size. How big is this graphene transistor? How densely can you pack 'em? How much energy does it use? And so forth. I've worked in the field of

Not to mention size. How big is this graphene transistor? How densely can you pack 'em? How much energy does it use? And so forth. I've worked in the field of nanoscale electronic stuff, and I don't believe anything will replace silicon for a long time; at least not until we've completely run out of ways to do things better with silicon. It's silicon that's the true miracle material -- it's versatile and cheap and amazingly easy to build stuff out of. We've been talking about replacing silicon for a while, but we keep coming back to it. It's all about silicon for the next couple of decades at least.