 |
Article dans une revue
Surface enhanced spectroscopy with gold nanostructures on silicon and glass substrates
Abstract : We compared the surface enhanced spectroscopy signal arising from dye molecules (methylene blue, crystal violet and octadecylrhodamine B) deposited on gold nanostructures fabricated onto two kinds of substrates: silicon wafer or glass. For any molecule and excitation wavelength, the observed signal was always higher on glass compared to silicon. This experimental result is confirmed by Finite-Difference Time Domain calculations: the enhancement in the electric field is much higher with gold nanoparticles on glass than on silicon, even if a thin oxide layer is present. These results clearly demonstrate that the nature of the substrate, independently of metallic nanoparticles, is important for the preparation of highly efficient SERS nanostructures.
https://hal-unilim.archives-ouvertes.fr/hal-00911089
Contributeur : Sylvain Vedraine <>
Soumis le : jeudi 28 novembre 2013 - 17:00:38
Dernière modification le : mercredi 20 novembre 2019 - 03:07:17
Contributeur : Sylvain Vedraine <>
Soumis le : jeudi 28 novembre 2013 - 17:00:38
Dernière modification le : mercredi 20 novembre 2019 - 03:07:17
