Patent ID: 8664642

Claim:
A graphite-based device, comprising: a substrate comprising a plurality of zones; and one or more graphene stacks, wherein a first zone in the plurality of zones comprises a plurality of surfaces, wherein a first surface is adjacent to a second surface in the plurality of surfaces in the first zone, the one or more graphene stacks comprise a first graphene stack formed in the first zone, the first graphene stack comprises a plurality of graphene layers, a first graphene layer in the plurality of graphene layers is formed on the first surface in the first zone, wherein the first graphene layer is either planar or non-planar, a second graphene layer in the plurality of graphene layers comprises a first portion formed on a top surface of the first graphene layer, a second portion formed on the second surface in the first zone and a first intermediate portion connecting the first portion and the second portion of the second graphene layer, wherein the second graphene layer is non-planar, and the first and second graphene layers have different characteristic dimensions and different bandgaps.