Tuning plasmonic interaction between gold nanorings and a gold film for surface enhanced Raman scattering
- IMEC vzw, Kapeldreef 75, 3001 Leuven (Belgium)
- Bioscience Technology Development Office, Panasonic Corporation, 3-4 Hikaridai, Seika-cho, Soraku-gun, 619-0237 Kyoto (Japan)
We investigate the plasmonic properties of gold nanorings in close proximity to a gold film. The rings have been fabricated using nanosphere lithography and are optimized to boost their near-infrared surface enhanced Raman scattering (SERS) effects. A SERS enhancement factor as large as 1.4x10{sup 7} has been achieved by tuning the separation between the gold nanorings and the gold film. In addition, we have numerically and experimentally demonstrated an enhanced tunability of the plasmon resonance wavelength and a narrowing of the plasmon linewidth for increasing ring-film interaction.
- OSTI ID:
- 21464531
- Journal Information:
- Applied Physics Letters, Vol. 97, Issue 16; Other Information: DOI: 10.1063/1.3504187; (c) 2010 American Institute of Physics; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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