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Plasmonics

pp 1–6 | Cite as

A Low-Cost Stable SERS Substrate Based on Modified Silicon Nanowires

  • Hadi Rouhbakhsh
  • Nahid Farkhari
  • Sohrab Ahmadi-kandjani
  • Saeed Karima
  • Habib Tajalli
  • Mohammad Rashidi
Article
  • 34 Downloads

Abstract

In this paper, we report fabrication of a simple, stable, low-cost, and easy-to-fabricate substrate for surface enhanced Raman spectroscopy (SERS) applications. Silicon nanowires are one of the widely used nanostructures in different fields of nanotechnology. Through creating and varying the gap between nanowires and reducing their filling ratio and tapering, silicon nanowires are converted to applicable SERS substrates. Furthermore, the effects of annealing and post-KOH etching on these silver-coated silicon nanowire substrates are examined. It is shown that the applied processes remarkably enhance the captured Raman signal. For samples etched with KOH method, an optimized etching time at which the Raman signal reaches its maximum value is obtained as well. Finally, an ultra-high enhancement in the Raman signal is obtained.

Keywords

Surface-enhanced Raman spectroscopy Silicon nanowire SERS substrates 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Photonics Group, Research Institute for Applied Physics and AstronomyUniversity of TabrizTabrizIran
  2. 2.Iranian National Center for Laser Science and TechnologyTehranIran
  3. 3.Clinical Biochemistry Department, Faculty of MedicineShahid Beheshti University of Medical ScienceTehranIran
  4. 4.Research Center for Pharmaceutical Nanotechnology, Faculty of PharmacyTabriz University of Medical ScienceTabrizIran

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