Figure 6.

Schematic of the laser ablation of metals in liquids at different wavelengths in absence (a) and presence (b) of colloidal particles. Equal energy densities were assumed for all laser spots. The diagram in (c) (linear scales for both axes) demonstrates the effect of an increasing colloidal concentration on the NP productivity in LAL at different wavelengths. The trends shown in the diagram represent the interpretation of the combined results of the discussed literature in Section 2.2.1. Reprinted with permission from [66].