▎ 摘　　要

(CN217036018-U) NOVELTY - The invention claims a tunable narrow-band metamaterial absorber, belonging to the technical field of metamaterial absorber and terahertz; The tunable narrow-band metamaterial absorber is composed of a plurality of absorber unit array with the same structure, each absorber unit is set with strontium titanate layer (1), medium layer (2) and gold film (3) from up to down sequentially the length and width of the strontium titanate layer (1), the medium layer (2) and the gold film (3) are the same; the absorber unit is etched with a rectangular blind hole, the rectangular blind hole penetrates the strontium titanate layer (1) to the upper surface of the dielectric layer (2); at the bottom of the rectangular blind hole, the graphene layer (4) clings to the upper surface of the medium layer (2); The tunable narrow-band metamaterial absorber of the invention has double-control function and is insensitive to polarization, by changing the Fermi level of the graphene layer, realizing absorptivity control, by changing the strontium titanate layer environment temperature, realizing central frequency control. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a three-dimensional structure of the tunable narrow-band metamaterial absorber. 1Strontium titanate layer 2Dielectric layer 3Gold film 4Graphene layer