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Plasmonic core/shell nanorod arrays: Subattoliter controlled geometry and tunable optical properties

Journal of Physical Chemistry C, ISSN: 1932-7447, Vol: 111, Issue: 34, Page: 12522-12527
2007
  • 51
    Citations
  • 0
    Usage
  • 50
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    51
    • Citation Indexes
      51
  • Captures
    50

Article Description

The fabrication and optical properties of a nanostructured system consisting of free-standing metallic nanorods surrounded by a dielectric nanoshell are reported. The adjustable core-shell geometry allows the resonant optical properties of the system to be tuned throughout the visible spectrum in the 500-900 nm range. The shell presents a tubular geometry of uniform thickness that can be varied from a fraction of a nanometer to a few tens of nanometers. This creates a well-defined subattoliter volume for the integration of a substance to be excited or probed. To exemplify such an application, the sensitivity of the nanostructured system to the variation of the shell's index of refraction is studied as a function of shell thickness and nanorod aspect ratio. The spectral sensitivity of the longitudinal resonance of the structure was found to be about 100 nm per refractive index unit with a figure of merit (sensitivity/line-width) of about 1. © 2007 American Chemical Society.

Bibliographic Details

Paul R. Evans; Gregory A. Wurtz; Ron Atkinson; William Hendren; Daniel O'Connor; Wayne Dickson; Robert J. Pollard; Anatoly V. Zayats

American Chemical Society (ACS)

Materials Science; Energy; Chemistry

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