Figure 1.

(a) Schematic of the PLAL synthesis of Ag-Si microspheres upon ns-laser ablation of the monocrystalline Si wafer placed in the isopropanol containing AgNO₃. (b) Top-view SEM image of the as-synthesized Ag-Si product dried on a Si wafer. (c) Size distribution of the Ag-Si microspheres. (d) Series of SEM images illustrating evolution of the density and geometry of the Ag nanoclusters on the surface of Si microspheres upon increase of the AgNO₃ content in the working solution from 5 × 10⁻⁵ to 10⁻² M.