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Plasmonic mesostructures with aligned hotspots on highly oriented mesoporous silica films

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Title: Plasmonic mesostructures with aligned hotspots on highly oriented mesoporous silica films
Authors: Murai, Shunsuke Browse this author
Uno, Shiguma Browse this author
Kamakura, Ryosuke Browse this author
Ishii, Satoshi Browse this author
Nagao, Tadaaki Browse this author →KAKEN DB
Fujita, Koji Browse this author
Tanaka, Katsuhisa Browse this author
Issue Date: 1-Sep-2016
Journal Title: Optical Materials Express
Volume: 6
Issue: 9
Start Page: 2824
End Page: 2833
Publisher DOI: 10.1364/OME.6.002824
Abstract: Gold mesostructures are fabricated by oblique angle deposition on highly oriented mesoporous silica (MPS) thin films utlizing the periodic surface corrugation on the scale of 10 nm as a prepattern for controlled deposition. Scanning electron microscopy analysis clarified that the mesostructures comprised an array of interconnected gold nanorods oriented in plane to form meso gratings. We measured the surface enhanced Raman scattering (SERS) to demonstrate that the nanosized gaps between the rods act as hotspots. Although the sample was as thin as 8.0 nm, large SERS signals appeared because of the very narrow gaps (< 2 nm). The spatial mapping confirmed the uniform distribution of hotspots over the sample.
Rights: ©2016 Optical Society of America]. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.
Type: article
URI: http://hdl.handle.net/2115/72125
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 長尾 忠昭

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