Plasmonic nanoparticle arrays fabricated and modified by energetic ions for chemical sensors

• Material Type: 博士論文
• Title: Plasmonic nanoparticle arrays fabricated and modified by energetic ions for chemical sensors
• Author/Editor: Kawaguchi, Kazuhiro
• Author Heading: Kawaguchi, Kazuhiro
• Publication Date: 2014-03-25
• Publication Date (W3CDTF): 2014-03-25
• Alternative Title: エネルギーイオンによる化学センサーのためのプラズモニックナノ粒子集合体の製作と改質
• Degree grantor/type: 京都工芸繊維大学
• Date Granted: 2014-03-25
• Dissertation Number: 甲第690号
• Degree Type: 博士（工学）
• Text Language Code: eng
• Subject Heading: Plasmon; Ion implantation; Sputtering; Plasma cleaning; Plasmonic sensor
• Target Audience: 一般
• Note (General): type:Thesis; Plasmonic nanoparticles made of silver and gold exhibit unique optical properties due to localized surface plasmon resonance in the visible wavelength range. A plasmonic sensor is one of the most useful applications of such nanoparticles. In this thesis, energetic ion processes including ion implantation, sputtering and plasma cleaning were utilized to fabricate and modify silver or gold nanoparticle arrays for chemical sensing applications. The early chapter of this thesis describes the method to fabricate well-ordered and densely arranged silver nanoparticles buried in a thermally grown SiO2 by implanting with 350 keV silver ions. Cross-sectional transmission electron microscopy and scanning transmission electron microscopy revealed the presence of a two-dimensional array of silver nanoparticles of 25−40 nm in diameter located at a depth of ~130 nm, together with the self-organization of -layer of tiny silver nanoparticles aligned along the SiO2/Si interface. Next, a sputter deposition technique to prepare densely arranged silver nanoparticle which posses a nice plasmonic characteristic was presented and then plasma exposure was applied for cleaning the nanoparticle arrays. Plasma treatments of silver nanoparticles were found to bring about blue-shift and narrowing in their localized surface plasmon resonance. The author found that the plasmonic properties of gold nanoparticles were also altered by energetic ion irradiation and plasma exposure. Finally, the plasmonic sensing ability of gold nanoparticle for dilute cyclohexane was examined. Gold nanoparticle arrays were fabricated on SiO2 by a sputter deposition technique. The change in an extinction spectrum of gold nanoparticle arrays before and after exposure of cyclohexane vapor enabled to detect it. The gold nanoparticle array prepared by heating at 300 °C was densely arranged on the substrate and exhibited the highest sensitivity for cyclohexane. The experimentally detectable concentration of cyclohexane was as low as 0.5 vol%, much lower than its explosion limit.
• Format (IMT): application/pdf
• Access Restrictions: インターネット公開
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 京都工芸繊維大学 : ＫＩＴ学術成果コレクション

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http://repository.lib.kit.ac.jp/repo/repository/10212/2158/D1-0690.pdf fulltext

http://repository.lib.kit.ac.jp/repo/repository/10212/2158/thesis_kawaguchi.pdf fulltext