▎ 摘　　要

NOVELTY - Graphene-full medium cavity structure terahertz double-frequency adjustable perfect absorber comprises a metal layer (1), a medium layer (2) and a graphene layer (3) sequentially connected from bottom to top. The upper portion of the medium layer is provided with an annular cavity arranged periodically. USE - Graphene-full medium cavity structure terahertz double-frequency adjustable perfect absorber. ADVANTAGE - The graphene-full medium cavity structure terahertz double-frequency adjustable perfect absorber uses single-layer graphene to replace the upper metal layer so that the upper layer structure and the medium layer form a full-medium structure, the graphene thickness is far less than the traditional metal layer, can avoid the problem of the traditional metal layer ohm loss is too large, improves the absorption rate reaches perfect absorption. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of graphene-full medium cavity structure terahertz double-frequency adjustable perfect absorber. 1Metal layer 2Medium layer 3Graphene layer