Journal
ACS NANO
Volume 6, Issue 10, Pages 8989-8996Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn303059s
Keywords
plasmonics; Fano resonances; individual nanoparticles; nanorice; nanobelts; LSPR sensing
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Funding
- Spanish Government [Consolider-Ingenio EMET CSD2008-00066, NANOPLAS FIS2009-11264]
- Comunidad de Madrid [MICROSERES network S2009/TIC-1476]
- CSIC through a JAE-Pre grant
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We propose two different configurations for which the Fano-like interference of longitudinal plasmon resonances occurring at individual metallic nanoparticles can be easily employed in refractive index sensing: a colloidal suspension of nanospheroids (nanorice) and a single nanowire with rectangular cross section (nanobelt) on top of a dielectric substrate. We numerically study the performance of the two in terms of their figures of merit, which are calculated under realistic conditions. For the case of nanorice, we explicitly incorporate the effect of size dispersity into the simulations. Our obtained results show that the application of the proposed configurations seems to be not only feasible but also very promising.
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