基于六方取向锡纳米棒的等离子体元表面研究

IF 3.3 4区 物理与天体物理 Q2 CHEMISTRY, PHYSICAL
Xinyu He, Yifan He, Cheng Sun
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引用次数: 0

摘要

这项工作报告了波长为0.4-4(\mu \)m的锡元表面结构的等离子特性。在玻璃基底上,该元表面由中央的锡纳米棒和周围的六角形锡纳米棒组成。观测到了多个质子共振,揭示了锡元表面的质子耦合效应,并展示了相应的电磁场分布。结果表明,近场效应可以增强纳米结构表面附近的电磁场强度。通过调整元表面的参数,可以在所研究的波长范围内调整与锡纳米棒相关的等离子共振波长。基于这项研究,我们建议在 0.4-4\(\mu\)m 波长的等离子器件设计中采用这项工作中提出的锡元结构。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A Study of the Plasmonic Metasurface Based on Hexagonally Oriented Sn Nanobars

A Study of the Plasmonic Metasurface Based on Hexagonally Oriented Sn Nanobars

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.

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来源期刊
Plasmonics
Plasmonics 工程技术-材料科学:综合
CiteScore
5.90
自引率
6.70%
发文量
164
审稿时长
2.1 months
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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