Fabrication and response of SERS substrates based on arrays of gold nanostructures (Abstract/Poster in atti di convegno)

Type
Label
  • Fabrication and response of SERS substrates based on arrays of gold nanostructures (Abstract/Poster in atti di convegno) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Alternative label
  • G. V. Bianco, M. Grande, M. M. Giangregorio, M. Losurdo, P. Capezzuto, M. A. Vincenti, T. Stomeo, D. de Ceglia, M. De Vittorio, V. Petruzzelli, M. Scalora, A. D'Orazio, G. Bruno (2013)
    Fabrication and response of SERS substrates based on arrays of gold nanostructures
    in IX INSTM CONFERENCE, Bari (Italy), 30 June - 3 July 2013
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • G. V. Bianco, M. Grande, M. M. Giangregorio, M. Losurdo, P. Capezzuto, M. A. Vincenti, T. Stomeo, D. de Ceglia, M. De Vittorio, V. Petruzzelli, M. Scalora, A. D'Orazio, G. Bruno (literal)
Note
  • Poster (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • aInorganic Methodologies and of Plasmas, IMIP-CNR, University of Bari, via Orabona 4, 70126 Bari, Italy; Dipartimento di Ingegneria Elettrica e dell'Informazione, Politecnico di Bari, Via Re David 200, 70125 Bari, Italy; AEgis Technologies Inc., 410 Jan Davis Dr., Huntsville 35898-5000, Alabama, USA; Center for Bio-Molecular Nanotechnology, Istituto Italiano di Tecnologia, Via Barsanti,73010 Arnesano, Lecce, Italy; National Nanotechnology Laboratory (NNL), CNR-ISTITUTO DI NANOSCIENZE, Dip. Ingegneria dell'Innovazione, Università Del Salento, Via Arnesano, 73100 Lecce, Italy; Charles M. Bowden Research Center, RDECOM, Redstone Arsenal, Alabama 35898-5000, USA. (literal)
Titolo
  • Fabrication and response of SERS substrates based on arrays of gold nanostructures (literal)
Abstract
  • Concept The fabrication of substrates for surface enhanced Raman spectroscopy (SERS) responding to specific analytical (sensitivity, selectivity and reproducibility) and/or technical needs (cost, large area, stability) represents a highly active field of research. Supported gold nanostructure SERS substrates are interesting because they can accomplish plasmon resonance both in the near infrared (NIR) and visible range, matching standard laser sources for Raman analysis. In this contribute, we explore two different strategies to fabricate SERS substrates based on gold nanostructures: (i) two dimensional periodic arrays of gold nano-patches fabricated by means of nano-lithographic technique; and (ii) ensembles of gold nanoparticles grown by mask-less sputtering methodology. Motivations and Objectives The exploitation of SERS as a routine analytical technique depends on development of plasmonic substrates which have to provide significant enhancement factor, stability upon interaction with analytes and a low fabrication cost. Thus, this work is aimed to (i) the engineering of plasmonic structures in terms of size, shape, and surface distribution (random or periodic) maximizing the interaction with both analytes and excitation laser source, (ii) to the optimization of the explored fabrication routes for the production of stable array of gold nanostructures on different substrates (silicon, glass, PET, PI, and supported graphene). Results and Discussion SERS substrates based on periodic array of gold nano-patches (fig. a) and ensemble of gold nanoparticles (fig. b) supported on silicon have been fabricated. The effectiveness of these SERS substrates has been investigated and tested by a probe molecule (the benzyl thiol) in order to point up and to compare specific advantages and limits. (literal)
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