Ag nanorod arrays tailored for surface-enhanced Raman imaging in the near-infrared region

HANDLE Open Access

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

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

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