Graphene is deposited on Si/SiO2 and I want to make graphene based FET. For that I need alignment marks to identify graphene sheets on the substrate in e-beam lithography. I want to deposit two electrodes at the ends of the graphene.
For graphene you can use the photomask during lithoprapgy followed by liftoff technique and u can use metall mask or even lithography for electrode fabrication.