Multi-layer graphene terahertz metamaterial structure and preparation method thereof

The invention discloses a multilayer graphene terahertz metamaterial structure and a preparation method thereof, and belongs to the field of material preparation, and the specific scheme is as follows: the multilayer graphene terahertz metamaterial structure comprises a graphene layer, a substrate layer and a gold film layer, the graphene layer is arranged on the upper surface of the substrate layer, and the gold film layer is arranged on the lower surface of the substrate layer; the graphene layer comprises multiple layers of graphene, the graphene layer comprises a plurality of graphene periodic structure units, and the growth pattern of graphene in each graphene periodic structure unit is a G-shaped pattern. According to the multilayer graphene terahertz material, distribution changes of an electric field and a magnetic field on the surface of graphene are achieved through the G-shaped structure of the graphene, and response to terahertz electromagnetic waves is achieved. Meanwhile, multiple times of refle