Tunable and Reconfigurable Plasmonic-Photonic Resonances in Hybrid Metallo-Dielectric Quasicrystals for Biosensing (Contributo in atti di convegno)

Type
Label
  • Tunable and Reconfigurable Plasmonic-Photonic Resonances in Hybrid Metallo-Dielectric Quasicrystals for Biosensing (Contributo in atti di convegno) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • Crescitelli, A.; Ricciardi, A.; Consales, M.; Cutolo, A.; Galdi, V.; Cusano, A.; Esposito, E.; Granata, C. (2011)
    Tunable and Reconfigurable Plasmonic-Photonic Resonances in Hybrid Metallo-Dielectric Quasicrystals for Biosensing
    in Sensors, 2011 IEEE
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Crescitelli, A.; Ricciardi, A.; Consales, M.; Cutolo, A.; Galdi, V.; Cusano, A.; Esposito, E.; Granata, C. (literal)
Pagina inizio
  • 1325 (literal)
Pagina fine
  • 1328 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • University of Sannio; CNR-ICIB (literal)
Titolo
  • Tunable and Reconfigurable Plasmonic-Photonic Resonances in Hybrid Metallo-Dielectric Quasicrystals for Biosensing (literal)
Abstract
  • We report the first evidence of out-of-plane resonances in hybrid metallo-dielectric quasi-crystal nanostructures composed of metal-backed aperiodically-patterned low-contrast dielectric layers. We numerically and experimentally characterize these resonant phenomena and investigate the underlying physics. We show that, by comparison with standard periodic structures, a richer spectrum of resonant modes may be excited. Such modes are characterized by a distinctive plasmonic or photonic behavior, discriminated by their field distribution and dependence on the metal thickness. The response is accurately predicted via computationally-affordable periodic-approximant-based numerical modeling. Finally, we explore the structure functionalization via nanosized high refractive index overlays, for resonance tuning and quality-factor (Q) enhancement, as well as its surface sensitivity to deposition of nanolayers of materials mimicking bio-molecular binding. Overall, we excite resonant modes, with state-of-the-art quality factors and sensing/tuning efficiencies, of interest for developing novel optical devices for communications and sensing applications. (literal)
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