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Determining the Optical Geometry of a Gold Semi-Shell under the Kretschmann Configuration
https://tokushima-u.repo.nii.ac.jp/records/2011512
https://tokushima-u.repo.nii.ac.jp/records/201151241c1cb8d-08cf-45f9-bec5-cc551ba13963
| 名前 / ファイル | ライセンス | アクション |
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photonics_10_11_1228.pdf (3.31 MB)
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| 公開日 | 2023-11-29 | |||||||||||||||||||||||||||||
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| アクセス権 | open access | |||||||||||||||||||||||||||||
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| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||||||||||||||
| 資源タイプ | journal article | |||||||||||||||||||||||||||||
| 出版社版DOI | ||||||||||||||||||||||||||||||
| 関連識別子 | https://doi.org/10.3390/photonics10111228 | |||||||||||||||||||||||||||||
| 関連名称 | 10.3390/photonics10111228 | |||||||||||||||||||||||||||||
| 出版タイプ | ||||||||||||||||||||||||||||||
| 出版タイプ | VoR | |||||||||||||||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||||||||||||||||
| タイトル | ||||||||||||||||||||||||||||||
| タイトル | Determining the Optical Geometry of a Gold Semi-Shell under the Kretschmann Configuration | |||||||||||||||||||||||||||||
| 著者 |
ワタナベ, トモキ
× ワタナベ, トモキ
× 岡本, 敏弘
WEKO
129
× 山口, 堅三
WEKO
971
× 原口, 雅宣
WEKO
126
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| 内容記述 | Dielectric nanoparticles coated with metals (half-shell or semi-shell structures) have attracted attention as potential composite plasmonic nanomaterials with large optical anisotropy and absorption cross-sections. Structures approximately 100 nm in size can excite plasmons in the visible and near-infrared ranges, highlighting their distinct optical properties. This study employed metal semi-shell structures (metal: gold, dielectric: silica) in the Kretschmann configuration to experimentally and numerically demonstrate the optical determination of single-structure orientations through a finite-difference time-domain method. Gold semi-shell structures were fabricated through deposition and etching. These structures were removed from their substrate in ultrapure water and randomly dropped onto a thin gold substrate. In the single structure, we experimentally observed changes in the scattering light spectrum based on the optical geometry of the gold semi-shell at wavelengths ranging from 530 to 700 nm. The obtained results closely resembled those of a simulation and confirmed the presence of eigenmodes in the orientation through electric field analysis. These observations allow for the cost-effective and rapid determination of the orientations of numerous structures that are approximately 100 nm in size, solely through optical methods. This technique is a valuable development for measurement applications in nanostructure orientation control and functionality enhancement. | |||||||||||||||||||||||||||||
| キーワード | ||||||||||||||||||||||||||||||
| 主題 | Kretschmann configuration | |||||||||||||||||||||||||||||
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| 主題 | plasmonics | |||||||||||||||||||||||||||||
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| 主題 | optical geometry | |||||||||||||||||||||||||||||
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| 主題 | semi-shell scattered property | |||||||||||||||||||||||||||||
| キーワード | ||||||||||||||||||||||||||||||
| 主題 | scattered-light spectroscopy | |||||||||||||||||||||||||||||
| 書誌情報 |
en : Photonics 巻 10, 号 11, p. 1228, 発行日 2023-11-02 |
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| 収録物識別子タイプ | ISSN | |||||||||||||||||||||||||||||
| 収録物識別子 | 23046732 | |||||||||||||||||||||||||||||
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| 出版者 | MDPI | |||||||||||||||||||||||||||||
| 権利情報 | ||||||||||||||||||||||||||||||
| 権利情報 | This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). | |||||||||||||||||||||||||||||
| 言語 | ||||||||||||||||||||||||||||||
| 言語 | eng | |||||||||||||||||||||||||||||
