| Citation: | SHEN Yang, LU Zhi-feng, GUO Ya-kun, LONG Yun-fei, HE Rui, Zhang Zhe-rui. Resistive plasmonic absorbing structures for stability enhancement of broadband absorption[J]. Chinese Optics, 2024, 17(3): 683-692. doi: 10.37188/CO.EN-2023-0022
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Broadband absorption performance in resistive metamaterial absorbers (MA) has always been disturbed by its ohmic sheet element. We propose a comprehensive scheme based on integrating resistive MA and plasmonic structure (PS) to enhance the stable absorption performance. Theoretical investigation indicated that the PS can inspire multi-resonance based on dispersion engineering, and that the localized electric field takes effect on the surface of the ohmic sheet accordingly. Simulation and experimental measurement demonstrated that the proposed resistive plasmonic absorbing structures (PAS) can achieve stable and highly efficient absorption within the frequency band from 7.8 to 40.0 GHz with the ohmic sheet ranging from 100 to 250 Ω/sq. In conclusion, the proposed integration of PS and resistive MA provides an efficient pathway to optimize performance for various applications.
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