The spectral and angular distributions of the scattered light from aggregated noble-metal films have been investigated. The films were formed by evaporation on hot glass substrates (300 °C) in order to obtain relatively large and regular size aggregates (200–1000 Å). The scattered light from the aggregated films in general exhibited a peak in the spectral region that was studied (0.3–1.0µm). The experimental spectral and angular measurements have been compared to results calculated from a theory considering the aggregates as spheroidal particles and satisfactory agreement has been obtained. An additional structure in the spectral distribution of the scattered light has been found in the case of relatively large size silver aggregates (> 1000 Å).
© 1978 Optical Society of AmericaPDF Article