Journal
APPLIED PHYSICS LETTERS
Volume 98, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3600661
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- University of California at San Diego
- NSF-ECCS [0969405]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [0969405] Funding Source: National Science Foundation
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We demonstrate that the surface plasmon polariton (SPP) properties of the silver composite films can be tuned by modest additions of silicon oxide or silicon. The dispersion relations deviate from that of pure silver films, and exhibit the capability to shift the surface plasmon frequency and provide larger SPP wave vectors at longer wavelengths. The effective permittivities are modeled phenomenologically by taking into account both filling ratios and size effects. These types of tunable composite films have various useful applications in areas, such as superlens imaging, SPP based sensing, enhanced photoluminescence, and SPP based photovoltatics. (C) 2011 American Institute of Physics. [doi:10.1063/1.3600661]
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