The perfect absorber is one of the most important applications in metamaterials technology, which has received much attention based on its ultrathin characteristics and design flexibility, but also suffers from the disadvantage of narrow absorption bandwidth. Therefore, this paper proposes a broadband metamaterial perfect absorber based on a metal-dielectric-metal structure, and its absorption mechanism and physical principle are analyzed. The results show that the metamaterial absorber realizes perfect absorption from visible to near-infrared wavelength. In addition, this study investigated and compared the effects of various materials and geometrical structures on the absorption performance, and analyzed the absorption spectra about different polarized directions and large-angle oblique incident light. The designed absorber with its simple structure and broad absorption spectrum is expected to be widely used in various industries, like solar cells, infrared imaging, and detectors.

Yi Cao, Xuanjun He. A plasma resonance-based broadband metamaterial absorber design. Academic Journal of Materials & Chemistry (2024) Vol. 5, Issue 3: 79-84. https://doi.org/10.25236/AJMC.2024.050312.

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