Analytical and Bioanalytical Chemistry

, Volume 408, Issue 16, pp 4403–4411

Gold-sputtered Blu-ray discs: simple and inexpensive SERS substrates for sensitive detection of melamine

  • Michél K. Nieuwoudt
  • Jacob W. Martin
  • Reece N. Oosterbeek
  • Nina I. Novikova
  • Xindi Wang
  • Jenny Malmström
  • David E. Williams
  • M. Cather Simpson
Research Paper

DOI: 10.1007/s00216-016-9545-5

Cite this article as:
Nieuwoudt, M.K., Martin, J.W., Oosterbeek, R.N. et al. Anal Bioanal Chem (2016) 408: 4403. doi:10.1007/s00216-016-9545-5

Abstract

Nanostructured gold substrates provide chemically stable, signal-enhancing substrates for the sensitive detection of a variety of compounds through surface-enhanced Raman spectroscopy (SERS). Recent developments in advanced fabrication methods have enabled the manufacture of SERS substrates with repeatable surface nanostructures that provide reproducible quantitative analysis, historically a weakness of the SERS technique. Here, we describe the novel use of gold-sputtered Blu-ray disc surfaces as SERS substrates. The unique surface features and composition of the Blu-ray disc recording surface lead to the formation of gold nano-islands and nanogaps following simple gold sputtering, without any background peaks from the substrate. The SERS performance of this substrate is strong and reproducible with an enhancement factor (EF) of 103 for melamine. A limit of detection (LOD) for this compound of 70 ppb and average reproducibility of ±12 % were achieved. Gold-sputtered Blu-ray discs thus offer an excellent alternative to more exotic gold SERS substrates prepared by advanced, time-consuming and expensive methods.

Graphical abstract

AFM 3D images of 1-μm2 sections of uncoated and gold-sputtered recordable Blu-ray disc (BD-R) surfaces and the SERS signal obtained on the gold-sputtered surface for a 1000 ppm aqueous solution of melamine.

Keywords

SERS Blu-ray discs Melamine SERS substrates 

Supplementary material

216_2016_9545_MOESM1_ESM.pdf (554 kb)
ESM 1(PDF 554 KB)

Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Michél K. Nieuwoudt
    • 1
    • 2
    • 3
  • Jacob W. Martin
    • 1
    • 2
    • 3
    • 4
  • Reece N. Oosterbeek
    • 1
    • 2
    • 4
  • Nina I. Novikova
    • 1
    • 2
    • 3
    • 4
  • Xindi Wang
    • 1
    • 2
    • 3
    • 4
  • Jenny Malmström
    • 1
    • 3
    • 5
  • David E. Williams
    • 1
    • 3
  • M. Cather Simpson
    • 1
    • 2
    • 3
    • 4
    • 6
  1. 1.MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Chemical SciencesThe University of AucklandAucklandNew Zealand
  2. 2.The Photon FactoryThe University of AucklandAucklandNew Zealand
  3. 3.School of Chemical SciencesThe University of AucklandAucklandNew Zealand
  4. 4.The Dodd Walls Centre for Photonic and Quantum TechnologiesAucklandNew Zealand
  5. 5.Chemical and Materials EngineeringThe University of AucklandAucklandNew Zealand
  6. 6.Department of PhysicsThe University of AucklandAucklandNew Zealand

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