Plasmonics

, 6:725

Silver Nanoparticle Arrays on a DVD-Derived Template: An easy&cheap SERS Substrate

  • Giuseppe Giallongo
  • Roberto Pilot
  • Christian Durante
  • Gian Andrea Rizzi
  • Raffaella Signorini
  • Renato Bozio
  • Armando Gennaro
  • Gaetano Granozzi
Article

DOI: 10.1007/s11468-011-9256-x

Cite this article as:
Giallongo, G., Pilot, R., Durante, C. et al. Plasmonics (2011) 6: 725. doi:10.1007/s11468-011-9256-x

Abstract

Commercially available digital versatile discs (DVDs) contain a silver-coated spiral distribution of rectangular-shaped grooves (AgDVD): for the first time, they have been used to produce surface-enhanced Raman scattering (SERS) substrates by electrochemical deposition of silver nanoparticles (AgNPs@AgDVD). The overall procedure only requires cheap and widely available materials and can be easily accomplished. Scanning electron microscopy images of AgNPs@AgDVD revealed that small AgNPs (average diameter about 15 nm) are present within the valleys of AgDVD, whereas over the ridges, the AgNPs are bigger, more densely packed and with a dendrite-like morphology somewhere. The SERS properties of these substrates have been studied in terms of the enhancement factor (EF), point-to-point reproducibility and sample-to-sample repeatability. It turned out that high SERS EF and good reproducibility requirements are both fulfilled. As for repeatability, remarkably better results than typical literature values have been achieved. Such an easy&cheap preparation along with efficient SERS properties make DVD-derived SERS substrates very good candidates for the development of convenient and disposable sensing platforms.

Keywords

Low-cost SERS substrateAg nanoparticles on DVDElectrodepositionGood EF and reproducibility

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Giuseppe Giallongo
    • 1
  • Roberto Pilot
    • 1
  • Christian Durante
    • 1
  • Gian Andrea Rizzi
    • 1
  • Raffaella Signorini
    • 1
  • Renato Bozio
    • 1
  • Armando Gennaro
    • 1
  • Gaetano Granozzi
    • 1
  1. 1.Department of Chemical Sciences and INSTM Research UnitUniversity of PadovaPaduaItaly