▎ 摘　　要

NOVELTY - The substrate has a nano-patterned sapphire substrate. The graphene layer is formed on a surface of the nano-patterned sapphire substrate. The nano-pattern of the nano-patterned sapphire substrate is tapered, plate-like or concave. The graphene layer comprises 1-3 layers of graphene. USE - Graphene nano-patterned sapphire substrate. ADVANTAGE - The high-quality, layer-controllable and uniform graphene film is grown on a nano-patterned sapphire substrate, and a high-quality graphene nano-patterned sapphire substrate is prepared which effectively displays the performance of the device and has a simple preparation process, high controllability and is suitable for industrial mass production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a graphene nano-patterned sapphire substrate. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of a graphene nanopatterned sapphire substrate.