title: Ag nanorod arrays tailored for surface-enhanced Raman imaging in the near-infrared region.
abstract: Using a dynamic oblique angle deposition technique, we demonstrate the direct formation of Ag nanorods with quasi-parallel major axes on a template layer of oxide having a strongly anisotropic surface morphology. The optical properties of the nanorods are tuned by varying the deposition conditions without any pre- or post-treatment, and the resulting Ag nanorod arrays exhibit high surface-enhanced Raman scattering (SERS) activity. In addition to high macroscopic uniformity over a large area, our nanorod arrays contain a high density of isolated nanorods. Using the optimum Ag nanorod arrays, the SERS imaging of the microdroplets of a rhodamine 6G solution is successfully demonstrated. The space resolution of the imaging is of the order of at least a few µm. These features are suitable for the SERS imaging of biomaterials.
authors.affiliation: Department of Micro Engineering, Kyoto University, Kyoto 606-8501, Japan.
authors.forename: Motofumi
authors.initials: M
authors.lastname: Suzuki
authors.forename: Wataru
authors.initials: W
authors.lastname: Maekita
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Wada
authors.forename: Koji
authors.initials: K
authors.lastname: Nagai
authors.forename: Kaoru
authors.initials: K
authors.lastname: Nakajima
authors.forename: Kenji
authors.initials: K
authors.lastname: Kimura
authors.forename: Takao
authors.initials: T
authors.lastname: Fukuoka
authors.forename: Yasushige
authors.initials: Y
authors.lastname: Mori