Transport and optical measurements on Graphene - hBN heterostructures

Placing graphene on hexagonal BN (hBN) substrates has recently been shown to lead to improved device quality.~ In addition, the planar nature of the h-BN allows for the realization of novel device architectures with high mobility graphene, including dual-gated devices.~ I will discuss recent transport and optical measurements on such graphene-hBN heterostructures, focusing on high mobility dual gated bilayer graphene, in which the carrier density and the band-gap can be tuned independently.