Resonant SPP modes supported by discrete metal nanoparticles on high-index substrates
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Beck, Fiona; Verhagen, E.; Mokkapati, S.; Polman, A.; Catchpole, Kylie
Description
We provide a new physical interpretation of scattering from plasmonic nanoparticles on high-index substrates. We demonstrate the excitation of different types of resonant modes on disk-shaped, Ag nanoparticles. At short wavelengths, the resonances are localised at the top of the particle, while at longer wavelengths they are localised at the Ag/substrate interface. We attribute the long wavelength resonances to geometric resonances of surface plasmon polaritons (SPPs) at the Ag/substrate...[Show more]
Collections | ANU Research Publications |
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Date published: | 2011-03-14 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/104123 |
Source: | Optics express |
DOI: | 10.1364/OE.19.00A146 |
Access Rights: | Open Access via Publisher site |
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