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.
Journal
-
- Nanotechnology
-
Nanotechnology 19 (26), 2008-05-18
Institute of Physics
- Tweet
Details
-
- CRID
- 1050001201937333760
-
- NII Article ID
- 120001192612
-
- ISSN
- 09574484
- 13616528
-
- HANDLE
- 2433/72803
-
- Text Lang
- en
-
- Article Type
- journal article
-
- Data Source
-
- IRDB
- CiNii Articles