Surface Plasmons and Surface Enhanced Raman Spectra of Aggregated and Alloyed Gold-Silver Nanoparticles
Figure 4
Absorption spectra of the two types of samples, with various metal concentrations. (a) Annealed gold covered by annealed silver (samples A), 1, 2: various silver concentrations; 80, 20%, respectively. (b) Gold covered by silver and annealed together (samples B), 1–4: various silver concentrations; 20%, 40%, 50%, and 80%, respectively.
