A: "Be manufactured inexpensively en masse"

Seriously though, graphene is super cool. Did anyone else notice that the "wave guide" looks suspiciously similar to a barrel type piece of Lego?

Great question. I asked AskScience reddit with the question "What can steel do that graphene can't?" http://www.reddit.com/r/askscience/comments/1a8z1q/what_stee...