4.8 Article

Plasmonic focusing reduces ensemble linewidth of silver-coated gold nanorods

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Silver coating gold nanorods reduces the ensemble plasmon line width by changing the relation connecting particle shape and plasmon resonance wavelength. This change, we term plasmonic focusing, leads to less variation of resonance wavelengths for the same particle size distribution. We also find smaller single particle linewidth comparing resonances at the same wavelength but show that this does hot contribute to the ensemble linewidth narrowing.

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