Synthesis of Silver Nanoparticle Arrays for SERS Based Sensing

  • C. D’Andrea
  • F. Neri
  • P. M. Ossi
  • N. Santo
  • S. Trusso
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 91)

Abstract

Recently, noble-metal nanoparticles (NMNPs) were introduced in the sensing discipline, and become one of the most efficient ways to enhance sensors sensitivity. It is known, in fact, that NMNPs possess peculiar optical properties. When NMNPs are illuminated by a laser beam with proper wavelength, the so-called localized surface plasmons, a collective oscillation of conduction electrons on NMNP surface, are excited. The effect is relevant, for example, in Surface Enhanced Raman Spectroscopy, where a significant enhancement of a localized electromagnetic field near NMNPs surface allows to detect species usually undetectable with normal Raman spectroscopy. Here we present a method for the growth of silver NP arrays with controlled morphology by means of the pulsed laser ablation technique performed in presence of a Ar atmosphere. The nanoparticles size and morphology can be tuned, respectively, by the Ar pressure and the laser pulse number. The SERS activity of nanoparticle arrays is investigated by Raman scattering of adsorbed rhodamine 6G (R6G) at different concentrations.

Keywords

Surface Plasmon Resonance Laser Shot Pulse Laser Ablation Surface Plasmon Resonance Peak Nanoparticle Array 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • C. D’Andrea
    • 1
  • F. Neri
    • 1
  • P. M. Ossi
    • 2
  • N. Santo
    • 3
  • S. Trusso
    • 4
  1. 1.Dipartimento di Fisica della Materia e Ingegneria ElettronicaUniversità degli Studi di MessinaMessinaItaly
  2. 2.Dipartimento di Energia & Centre for NanoEngineeredMAterials and Surfaces NEMAS Politecnico di MilanoMilanItaly
  3. 3.Centro Interdipartimentale di Microscopia AvanzataUniversità degli Studi di MilanoMilanItaly
  4. 4. Istituto per i Processi Chimico-FisiciIPCF-CNRMessinaItaly

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