▎ 摘　　要

NOVELTY - The device (2200) comprises a graphene layer (2502) provided over a concave or convex region of a substrate (2102) and a planar region of the substrate. The concave or convex region and the planar region provided adjacent to each other. The graphene layer is curved within the concave or convex region. The graphene layer is substantially planar within the planar region. A metal electrode in contact with the graphene layer within the planar region. The substrate includes an insulating substrate. The insulating substrate includes one of quartz, glass, ceramic, sapphire, and silicon carbide (SiC). The concave or convex region of the substrate includes a concave region. USE - Device used for producing graphene films. ADVANTAGE - Device provides the formation of high-quality, large-area graphene over any type of surface topography and/or surface structure. DESCRIPTION OF DRAWING(S) - The drawing shows a cross sectional view of a curved graphene structure. Substrate (2102) Device (2200) Convex Curved Region (2205) Graphene layer (2502) Source/drain Electrodes (2702)