Detection of Rhodamine 6G at low concentrations using Raman Spectroscopy: A comparison between Ag and Au-based nanoporous substratesD. Fernand, D. Bergé-Lefranc, C. Pardanaud, T.N.T. Phan, A. Merlen and V. HornebecqEur. Phys. J. Special Topics, 224 9 (2015) 2001-2010DOI: https://doi.org/10.1140/epjst/e2015-02517-5