{"title":"A Study of the Plasmonic Metasurface Based on Hexagonally Oriented Sn Nanobars","authors":"Xinyu He, Yifan He, Cheng Sun","doi":"10.1007/s11468-024-02505-z","DOIUrl":null,"url":null,"abstract":"<p>This work reports on the plasmonic properties of a Sn metasurface structure, in the wavelength region of 0.4–4<span>\\(\\mu \\)</span>m. On top of a glass substrate, the metasurface is formed by a central Sn nanobar surrounded with hexagonally oriented Sn nanobars. Multiple plasmonic resonances are observed, the plasmonic coupling effect at the Sn metasurface is revealed, and the corresponding electromagnetic field distributions are demonstrated. The results show that the electromagnetic field intensity near the surface of nanostructures can be enhanced by the near-field effect. The plasmonic resonance wavelength associated with the Sn nanobars can be tuned in the studied wavelength range, by adjusting the parameters of the metasurface. Based on this study, we suggest that the structure of the Sn metastructure proposed in this work be implemented in the design for plasmonic devices at 0.4–4<span>\\(\\mu \\)</span>m wavelengths.</p>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":null,"pages":null},"PeriodicalIF":3.3000,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plasmonics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1007/s11468-024-02505-z","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
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Abstract
This work reports on the plasmonic properties of a Sn metasurface structure, in the wavelength region of 0.4–4\(\mu \)m. On top of a glass substrate, the metasurface is formed by a central Sn nanobar surrounded with hexagonally oriented Sn nanobars. Multiple plasmonic resonances are observed, the plasmonic coupling effect at the Sn metasurface is revealed, and the corresponding electromagnetic field distributions are demonstrated. The results show that the electromagnetic field intensity near the surface of nanostructures can be enhanced by the near-field effect. The plasmonic resonance wavelength associated with the Sn nanobars can be tuned in the studied wavelength range, by adjusting the parameters of the metasurface. Based on this study, we suggest that the structure of the Sn metastructure proposed in this work be implemented in the design for plasmonic devices at 0.4–4\(\mu \)m wavelengths.
期刊介绍：
Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons.
Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.
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