Fig. 1From: Compositional Analysis of Ternary and Binary Chemical Mixtures by Surface-Enhanced Raman Scattering at Trace Levels a SEM morphology of the SiO2 NRs@Au NPs SERS substrate. b TEM morphology of the SiO2 NRs@Au NPs SERS substrate. The inset is the HRTEM of Au NP decorated on SiO2 NRBack to article page