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Plasmonic Sensing of Volatile Organic Compounds Using Metal Nanoparticles Exposed to Argon Plasma
http://hdl.handle.net/10212/2557
http://hdl.handle.net/10212/255729d6eb95-082a-43b4-a008-bdf93e42acd6
| 名前 / ファイル | ライセンス | アクション |
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内容の要約 (886.9 KB)
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内容・審査結果の要旨 (164.9 KB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||||
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| 公開日 | 2022-04-21 | |||||||||
| タイトル | ||||||||||
| タイトル | Plasmonic Sensing of Volatile Organic Compounds Using Metal Nanoparticles Exposed to Argon Plasma | |||||||||
| 言語 | en | |||||||||
| その他のタイトル | ||||||||||
| その他のタイトル | プラズマ曝露した金属ナノ粒子による揮発性有機化合物のプラズモニックセンシング | |||||||||
| 言語 | ja | |||||||||
| 作成者 |
細見, 圭
× 細見, 圭
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| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | localized surface plasmon resonance | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | PLasmonic sensing | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Metal nanoparticles | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Argon plasma | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | VOC | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | Metal nanoparticles exhibit unique optical properties thorough localized surface plasmon resonance (LSPR). Dependences of the LSPRs on dielectric properties of the surrounding medium are capable of a development of a plasmonic sensor for the detection of analytes in liquid or vapor phase. Silver and gold nanoparticles (Ag and Au NPs) have intense LSPRs in the visible region, and therefore the measurements without complex experimental set-up can be accomplished. The author utilized mainly Ag NP as the plasmonic material to detect volatile organic compound (VOC) vapor. In addition, plasma treatments with Ar gas were employed to improve the sensing ability by modification of the plasmonic NP surfaces. The early chapter of this thesis deals with plasma-induced compositional/morphological changes of Ag NP surfaces. Diminishing contamination initially adsorbing on the sample surfaces dominated in plasma exposure up to 30 s lowering the LSPR intensity with blue-shift in resonance wavelength. Prolonged plasma exposure promoted morphological alterations with Ostwald ripening. At this stage, isolated Ag NPs with rounded shapes resulted in sharpened intense LSPR spectrum. Such sharp LSPR spectra are favorable for the plasmonic sensing with monitoring the intensity change at a fixed wavelength. Next, Ar plasma was employed to purify tarnished Ag surfaces where silver sulfide formed. Plasma produced in our experimental condition contained atomic hydrogen and oxygen. Such reactive species and excited Ar atoms accompanying UV light emission induced transformation of the contaminated scale consisting of C, N, and S atoms into a metallic layer. Finally, Au NPs together with Ag NPs were applied to the plasmonic sensing platform. When the Au NPs were preprared on one side of the transparent silica substrate, followed by Au NP deposition on the other side, two distinct LSPR peak appeared in the visible wavelength region. In the method to estimate sensitivity by the intensity changes at certain wavelengths, therefore, two different wavelengths can be independently used. More accurate sensing is expected by using such spectrum possessing two LSPR peaks. | |||||||||
| 言語 | en | |||||||||
| 日付 | ||||||||||
| 日付 | 2020-03-25 | |||||||||
| 日付タイプ | Issued | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||||
| 資源タイプ | doctoral thesis | |||||||||
| 学位授与番号 | ||||||||||
| 学位授与番号 | 甲第947号 | |||||||||
| 学位名 | ||||||||||
| 言語 | ja | |||||||||
| 学位名 | 博士（工学） | |||||||||
| 学位授与年月日 | ||||||||||
| 学位授与年月日 | 2020-03-25 | |||||||||
| 学位授与機関 | ||||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||||
| 学位授与機関識別子 | 14303 | |||||||||
| 言語 | ja | |||||||||
| 学位授与機関名 | 京都工芸繊維大学 | |||||||||
