Surface-Enhanced Raman Spectroscopy of Dye and Thiol Molecules Adsorbed on Triangular Silver Nanostructures: A Study of Near-Field Enhancement, Localization of Hot-Spots, and Passivation of Adsorbed Carbonaceous Species
Figure 9
(a) Time series of Raman spectra acquired at a fixed focal point of a sample of Ag nanoparticles covered by a film of the block copolymer PB-b-PIP. Three spectra extracted from the time series are plotted in (b). The strong spectral and intensity fluctuations are not correlated to the Raman spectrum of PB-b-PIP. In (c), a time series of Raman spectra was acquired from a fixed focal point of sample of Ag nanoparticles with methylene blue adsorbed and covered by PDMS. In (d), SERS spectra of MB molecules present stationary behaviour.
