诺共振
时域有限差分法
法诺平面
石墨烯
等离子体子
共振(粒子物理)
光电子学
物理
表面等离子共振
材料科学
光学
纳米技术
原子物理学
纳米颗粒
数学
纯数学
标识
DOI:10.1016/j.diamond.2024.110823
摘要
The work introduces a tunable Fano resonance with obvious sensing properties in a graphene-based metasurface. And the electromagnetic responses as functions of the structural defect and the Fermi level are investigated by using finite-difference time-domain (FDTD) simulation analysis. The results show that the influence of the height for the defect on Fano resonance is much greater than that of the width and position for the defect on Fano resonance. Notably, our specifically designed structure demonstrates improved sensing properties, achieving the maximum of sensitivity S = 1.1THz/RIU. This enhancement is attributed to the increased interaction between environmental substances and electromagnetic waves caused by the Fano resonance. These findings contribute significantly to the comprehension of plasmonic resonance in graphene-based metasurfaces and underscore their promising potential in sensing technologies.
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