In this paper, a broadband terahertz absorber based on the Dirac‐semimetal AlCuFe is proposed. A classic metal–dielectric–metal (MIM) sandwich structure is adopted, consisting of a periodic AlCuFe pattern on the top, a silica dielectric spacer in the middle, and a gold reflective film at the bottom. When the Fermi leve...
Zhong-Yang Jin, Jian Li, Yan-Hong Xiang et al.· Microwave and optical techno...· 0 citations
Tunable terahertz (THz) absorbers require broadband response, dynamic control, and simple device architectures. Here, we propose a dual‐state VO2–graphene composite metasurface comprising one patterned graphene layer, a SiO2 dielectric spacer, and a VO2 substrate. The thermally induced insulator‐to‐metal transition of...
Chen-Xi Xiang, Zao Yi, Chong-Hui Li· International journal of num...· 0 citations
This paper proposes an ultra‐broadband terahertz absorber featuring a composite‐patterned monolayer graphene metasurface. By structurally combining a centrally perforated elliptical array with adjacent slotted strips, the absorber achieves a continuous working band from 2.18 to 6.32 THz, with a relative bandwidth of...
Si-Qi Li, Li Liu, Yong Zhang et al.· International journal of num...· 0 citations
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