Review Article

Microanalysis of Organic Pigments in Ancient Textiles by Surface-Enhanced Raman Scattering on Agar Gel Matrices

Figure 6

Upper trace: Raman spectrum from the blue thread of an XVIth century tapestry (Italian artwork) shown in (b). Lower trace: SERS spectrum (514 nm excitation) of indigo extracted from the same sample by using an agar gel bead containing the leuco-reduction chemicals. Adapted from [37].