Another Step Towards Graphene Semiconductors

derGoldstein writes "Ars has an article up about the two latest 'papers demonstrating that, if you change the way the graphene stacks, you obtain a voltage-controlled bandgap ... Between these two papers, a fairly complete understanding of the bandgap behavior in three-layer graphene has been obtained, leaving only the challenge of making the stuff.'"

Comments

Re:Graphene == dead end :-(

[samael]

They are being modded troll because it links to a goatse.cx image...

Re:2 layer vs 3 layer

[gstrickler]

To a first approximation, the point seems to be that what we used to be able to do with bi-layer two layer graphene, we can now do with tri-layer three layer graphene. Um, OK, thats nice but not "new"

No, bi-layer graphene can have a band-gap, but it's not controllable, so it can't be used to make a transistor. Conventionally stacked tri-layer graphene has the same problem. What is new is that by changing the way three graphene layers are stacked allows creating a voltage controlled band-gap, which allows for the creation of a transistor.