Figure 2From: Out-diffused silver island films for surface-enhanced Raman scattering protected with TiO2 films using atomic layer depositionOptical absorption spectra and differential spectra. Optical absorption spectra of samples with a MIF prepared using annealing in hydrogen at 150°C, 250°C, and 300°C before (solid line) and after (dashed line) the MIF removal (a) and the differential spectra corresponding to the MIFs themselves (b).Back to article page