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Proceedings Paper

Plasmonic nanostructures for enhanced Raman spectroscopy: SERS and TERS of thiolated monolayers
Author(s): Gregory Q. Wallace; Farshid Pashaee; Renjie Hou; Mohammadali Tabatabei; François Lagugné-Labarthet
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Paper Abstract

Although discovered 40 years ago, the interest in surface enhanced Raman spectroscopy (SERS) for a variety of applications in the fields of material and biomaterial has been revived over the past decade mostly due to a better control over the fabrication methods of nanoscale metallic structures. Metallic structures prepared by bottom-up or top-down methods can be tailored for a variety of applications in order to benefit from the best conditions for surface enhancement. SERS platforms made by nanosphere lithography are for example very versatile platforms that show a detection limit in the femtomolar range. Although quantitative measurements are difficult to perform in Raman spectroscopy, the plasmon-mediated enhancement by the metallic nanostructures are of great interest to improve the detection of analytes traces at surfaces. The extension of SERS to tip-enhanced Raman spectroscopy (TERS) is also very valuable to improve spatial resolution of Raman measurements and to yield surface signals, thus making TERS spectroscopy a surface specific technique. Herein we review SERS and TERS measurements of a model molecule (nitrothiophenol) adsorbed onto gold surfaces.

Paper Details

Date Published: 2 May 2014
PDF: 4 pages
Proc. SPIE 9126, Nanophotonics V, 912610 (2 May 2014); doi: 10.1117/12.2054391
Show Author Affiliations
Gregory Q. Wallace, The Univ. of Western Ontario (Canada)
Farshid Pashaee, The Univ. of Western Ontario (Canada)
Renjie Hou, The Univ. of Western Ontario (Canada)
Mohammadali Tabatabei, The Univ. of Western Ontario (Canada)
François Lagugné-Labarthet, The Univ. of Western Ontario (Canada)

Published in SPIE Proceedings Vol. 9126:
Nanophotonics V
David L. Andrews; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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