Journal
NANO LETTERS
Volume 7, Issue 8, Pages 2346-2350Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl071001t
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Funding
- NCI NIH HHS [P50 CA070907] Funding Source: Medline
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We show that a nanoparticle can serve as an efficient antenna for coupling of visible light into propagating plasmons of an Ag nanowire. For long wires, the coupling is maximal for incident light polarized perpendicular to the nanowire. For sub-10-mu m nanowires, the polarization corresponding to maximum emission from the ends of the nanowire was found to be strongly dependent on the nanowire geometry and position of the vicinal nanoparticle. This nanoparticle antenna-based approach offers a potential strategy for optimizing plasmon coupling into nanoscale metallic waveguides.
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