Novel plasmonic bio-sensing system based on two-dimensional gold patch arrays for linear and nonlinear regimes (Articolo in rivista)

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  • Novel plasmonic bio-sensing system based on two-dimensional gold patch arrays for linear and nonlinear regimes (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.4028/www.scientific.net/AST.81.15 (literal)
Alternative label
  • Marco Grande, Maria Antonietta Vincenti, Tiziana Stomeo, Giuseppe Valerio Bianco, Domenico de Ceglia, Giuseppe Morea, Roberto Marani, Valeria Marrocco, Vincenzo Petruzzelli, Massimo de Vittorio, Giovanni Bruno, Michael Scalora, Antonella d'Orazio (2013)
    Novel plasmonic bio-sensing system based on two-dimensional gold patch arrays for linear and nonlinear regimes
    in Advances in science and technology (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Marco Grande, Maria Antonietta Vincenti, Tiziana Stomeo, Giuseppe Valerio Bianco, Domenico de Ceglia, Giuseppe Morea, Roberto Marani, Valeria Marrocco, Vincenzo Petruzzelli, Massimo de Vittorio, Giovanni Bruno, Michael Scalora, Antonella d'Orazio (literal)
Pagina inizio
  • 15 (literal)
Pagina fine
  • 19 (literal)
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  • 81 (literal)
Rivista
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  • Dipartimento di Elettrotecnica ed Elettronica, Politecnico di Bari, Via Re David 200, 70125 Bari (Italy) 2 AEgis Technologies Inc., 410 Jan Davis Dr., Huntsville 35806, AL - USA 3 Italian Institute of Technology (IIT), Center for Bio-Molecular Nanotechnology, Via Barsanti, Arnesano (Lecce), 73010 Italy 4 Inorganic Methodologies and of Plasmas, IMIP-CNR, via Orabona 4, 70126 Bari, Italy 4 National Nanotechnology Laboratory (NNL), CNR-ISTITUTO DI NANOSCIENZE, Dip. Ingegneria dell'Innovazione, Università Del Salento, Via Arnesano, 73100 Lecce, Italy 5Istituto di Tecnologie Industriali ed Automazione ITIA-CNR, Via P. Lembo 38, 70125 Bari (Italy) 6 Charles M. Bowden Research Center, RDECOM, Redstone Arsenal, Alabama 35898-5000 - USA (literal)
Titolo
  • Novel plasmonic bio-sensing system based on two-dimensional gold patch arrays for linear and nonlinear regimes (literal)
Abstract
  • We propose a novel bio-sensing platform based on the observation of the shift of the leaky surface plasmon mode that occurs at the edge of the plasmonic band gap of metal gratings based on two-dimensional gold nano-patch arrays when an analyte is deposited on the top of the metallic structure. We detail the numerical analysis, the fabrication and the characterization of these two-dimensional arrangements of gold patches in linear regime showing that sensitivity of our device approaches a value of 1000 nm/RIU with a corresponding Figure of Merit (FOM) of 222 RIU-1. We provide experimental proof of the sensing capabilities of the device by observing colour variations in the diffracted field when the air overlayer is replaced with a small quantity of Isopropyl Alcohol (IPA). Effects of technological tolerance such as rounded corners and surface imperfections are also discussed. We also report proof of changes in colour intensities as a function of the air/filling ratio ad periodicity and discuss how they can be obtained by diffracted spectra. Finally we report the numerical and experimental investigation of the non-linear behaviour of the device highlighting the Surface Enhanced Raman Scattering (SERS) performance. (literal)
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