Noble Metal Nanostructures Influence of Structure and Environment on Their Optical Properties
Figure 13
Photograph of mixture of colloidal solutions (a) of Au and Ag particles. Initial mixture (left), after 2 hours (middle), and after 4 hours (right) of exposure to Cu laser radiation. (b) Spectra documenting formation of alloyed Au-Ag particles in acetone. Blue and red lines are the absorption spectra of initial NPs of Ag and Au, respectively. Dashed line is the absorption spectrum of the mixture of individual colloidal solutions prior to laser exposure. The green curve is the absorption spectrum of alloyed Au-AgNPs obtained by laser exposure of the mixture [56].
