▎ 摘　　要

NOVELTY - The converter has a six-layer structure sequentially provided with a metal reflecting layer (1), a lower polyimide layer (2), a pattern vanadium dioxide free film layer (3), a metal/graphene composite layer (4), an upper polyimide layer (5) and a patterned vanadium oxide layer (6), where the metal reflective layer is a layer of continuous metal gold film, and the metal or graphene composite layer is metal gold circular ring double openings. The opening is filled with graphene, where patterned vial dioxide layer is composed of two coaxial vial oxide square rings with different side lengths. USE - Temperature and voltage modulation based terahertz broadband wave-absorbing/polarization converter for use in an electromagnetic metamaterial. Uses include but are not limited to biomedicine, detector, terahertz switch, imaging and wireless communication. ADVANTAGE - The converter has multifunctional and tunable, and polarization is not sensitive. The absorption and polarization conversion function can be automatically switched, the working frequency band is wide, the absorption amplitude and the polarization conversion rate can be continuously and dynamically regulated, and the modulation depth is large. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of a temperature and voltage modulation based terahertz broadband wave-absorbing/polarization converter. 1Metal reflecting layer 2Lower polyimide layer 3Pattern vanadium dioxide free film layer 4Metal/graphene composite layer 5Upper polyimide layer 6Patterned vanadium oxide layer