▎ 摘　　要

NOVELTY - The gradient structure media loaded graphene ultra-wideband high-efficiency wide-angle terahertz absorber comprises a metal substrate layer (1), a dielectric insulating layer (2), and a single graphene layer (3) arranged in sequence from bottom to top, the dielectric structure layer (4). The medium structure layer includes multiple semi-ellipsoidal units. The cavity length of the semi-ellipsoidal unit gradually increases and then decreases along the length direction of the semi-ellipsoidal unit. The single graphene layer is loaded with a gate voltage. The material of the metal substrate layer is gold. The material of the dielectric insulating layer is polydimethylsiloxane. USE - Gradient structure media loaded graphene ultra-wideband high-efficiency wide-angle terahertz absorber. ADVANTAGE - The terahertz wave absorbers solves the problems of low absorption frequency band, poor absorption rate, narrow absorption bandwidth, complex structure, and edge effect. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of the structure of a dielectric-loaded graphene absorber. Metal substrate layer (1) Dielectric insulating layer (2) Single graphene layer (3) Dielectric structure layer (4)