5 May 2015 Dielectric negative index metamaterial as plasmonics devices
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Electromagnetic surface waves, analogous to the classic surface plasmons can be supported to any interface, providing that the effective permittivity have an opposite sign. Localized plasmonlike modes and guided mode resonances are established in a photonic crystal slab irradiated with out-of-plane incident radiation, making photonic crystals a very appealing alternative to plasmonic substrates, avoiding the limits of absorption losses in metals.
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Vito Mocella, Vito Mocella, Silvia Romano, Silvia Romano, "Dielectric negative index metamaterial as plasmonics devices", Proc. SPIE 9502, Metamaterials X, 95020J (5 May 2015); doi: 10.1117/12.2179245; https://doi.org/10.1117/12.2179245

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