▎ 摘　　要

NOVELTY - The absorber has a bottom metal plate (1), two medium materials (2, 4), a middle windmill, a square annular graphene layer (3) and a top non-pattern graphene layer (5) that are tightly attached with each other, where thickness of the bottom metal plate is greater than skin depth of incident wave. The middle windmill is provided with a windmill structure and a square ring. The windmill structure comprises four semicircles with same diameter. The square ring surrounds the windmill structure. The windmill structure is located at a center portion of a wave absorber unit. A top layer is formed as a pattern-free graphene layer that is formed as a single-layer graphene, where thickness of graphene is about 0.34 nanometer. USE - Dual-layer graphene based high absorption rate broadband adjustable wave absorber. Uses include but are not limited to a terahertz metamaterial wave absorbing field, a terahertz switch, a modulator design area and a power collection field. ADVANTAGE - The absorber is simple in structure and convenient to integrate, and has high absorption rate, high working bandwidth and wide application range. DESCRIPTION OF DRAWING(S) - The drawing shows a top perspective view of a dual-layer graphene based high absorption rate broadband adjustable wave absorber. Bottom metal plate (1) Medium materials (2, 4) Square annular graphene layer (3) Top non-pattern graphene layer (5)