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Proceedings Paper

Plasmonic nanocoatings tailored for surface-enhanced Raman imaging in near-infrared region
Author(s): Motofumi Suzuki; Wataru Maekita; Yoshinori Wada; Shuyi Li; Kaoru Nakajima; Kenji Kimura; Takao Fukuoka; Yasushige Mori
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Paper Abstract

Using a dynamic oblique-angle deposition technique, we have demonstrated the direct formation of Ag nanorods with quasiparallel major axes on a template layer of oxide having a strongly anisotropic surface morphology. The optical properties of the nanorods are tuned by the deposition conditions without any pre- or post-treatment, and the resulting nanocoatings containing the Ag nanorods exhibit high surface-enhanced Raman scattering (SERS) activity. In addition to high uniformity over a large area, our nanocoatings contain a large number of isolated nanorods with a high density. Using the optimum Ag nanorods, SERS imaging of microdroplets of a rhodamine 6G solution has been successfully demonstrated. The space resolution of the imaging is of the order of at least a few μm. These features are quite appropriate for the SERS imaging of biomaterials.

Paper Details

Date Published: 10 September 2007
PDF: 8 pages
Proc. SPIE 6647, Nanocoatings, 664707 (10 September 2007); doi: 10.1117/12.731989
Show Author Affiliations
Motofumi Suzuki, Kyoto Univ. (Japan)
Wataru Maekita, Kyoto Univ. (Japan)
Yoshinori Wada, Kyoto Univ. (Japan)
Shuyi Li, Kyoto Univ. (Japan)
Kaoru Nakajima, Kyoto Univ. (Japan)
Kenji Kimura, Kyoto Univ. (Japan)
Takao Fukuoka, JST Kyoto Pref. CREATE (Japan)
Yasushige Mori, Doshisha Univ. (Japan)

Published in SPIE Proceedings Vol. 6647:
Geoffrey B. Smith; Michael B. Cortie, Editor(s)

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