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Sow I, Grand J, Lévi G, et al. Revisiting Surface-Enhanced Raman Scattering on Realistic Lithographic Gold Nanostripes. J Phys Chem C Nanomater Interfaces. 2013;117(48):25650-25658doi: 10.1021/jp407983h.
Sow, I., Grand, J., Lévi, G., Aubard, J., Félidj, N., Tinguely, J. C., Hohenau, A., & Krenn, J. R. (2013). Revisiting Surface-Enhanced Raman Scattering on Realistic Lithographic Gold Nanostripes. The journal of physical chemistry. C, Nanomaterials and interfaces, 117(48), 25650-25658. https://doi.org/10.1021/jp407983h
Sow, I, et al. "Revisiting Surface-Enhanced Raman Scattering on Realistic Lithographic Gold Nanostripes." The journal of physical chemistry. C, Nanomaterials and interfaces vol. 117,48 (2013): 25650-25658. doi: https://doi.org/10.1021/jp407983h
Sow I, Grand J, Lévi G, Aubard J, Félidj N, Tinguely JC, Hohenau A, Krenn JR. Revisiting Surface-Enhanced Raman Scattering on Realistic Lithographic Gold Nanostripes. J Phys Chem C Nanomater Interfaces. 2013 Dec 05;117(48):25650-25658. doi: 10.1021/jp407983h. Epub 2013 Nov 08. PMID: 24340104; PMCID: PMC3856770.
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J Phys Chem C Nanomater Interfaces. 2013 Dec 05;117(48):25650-25658. doi: 10.1021/jp407983h. Epub 2013 Nov 08.

Revisiting Surface-Enhanced Raman Scattering on Realistic Lithographic Gold Nanostripes.

The journal of physical chemistry. C, Nanomaterials and interfaces

I Sow, J Grand, G Lévi, J Aubard, N Félidj, J-C Tinguely, A Hohenau, J R Krenn

Affiliations

  1. Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris Diderot, Sorbonne Paris Cité, CNRS UMR 7086 , 15 rue Jean de Baïf, 75013 Paris, France.
  2. Department of Physics and Technology, University of Tromsø , PG Rodumsveg 5b, N-9011 Tromsø, Troms, Norway.
  3. Karl-Franzens University and Erwin Schrödinger Institute for Nanoscale Research , A-8010 Graz, Austria.

PMID: 24340104 PMCID: PMC3856770 DOI: 10.1021/jp407983h

Abstract

In this article, we investigate the Surface-Enhanced Raman Scattering (SERS) efficiency of methylene blue (MB) molecules deposited on gold nanostripes which, due to their fabrication by electron beam lithography and thermal evaporation, present various degrees of crystallinity and nanoscale surface roughness (NSR). By comparing gold nanostructures with different degrees of roughness and crystallinity, we show that the NSR has a strong effect on the SERS intensity of MB probe molecules. In particular, the NSR features of the lithographic structures significantly enhance the Raman signal of MB molecules, even when the excitation wavelength lies far from the localized surface plasmon resonance (LSPR) of the stripes. These results are in very good agreement with numerical calculations of the SERS gain obtained using the discrete dipole approximation (DDA). The influence of NSR on the optical near-field response of lithographic structures thus appears crucial since they are widely used in the context of nano-optics or/and molecular sensing.

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