Fig. 3From: Raman and Luminescent Spectra of Sulfonated Zn Phthalocyanine Enhanced by Gold Nanoparticles a Water dispersion of Au-SiO2 nanoparticles. b Optical density (OD) of an aqueous dispersion of Au-SiO2 nanoparticles in a cuvette with 10 mm of optical path length, corrected by the OD of a cuvette filled with water without nanoparticlesBack to article page