Figure 5

Raman spectra of 10⁻⁶ M RhB on different substrates, first on precursor Ag sponge (a) and then on the different resulting networks of (b) Ag_0.918Au_0.045Pd_0.037, (c) Ag_0.90Au_0.078Pd_0.022, (d) Ag_0.891Au_0.091Pd_0.018, and (e) Ag_0.889Au_0.094Pd_0.017.