ИСТИНА

Composite silicon-silver (Si/Ag) nanoparticles simultaneously have properties of dielectric and metallic nanoparticles. Such nanocomposites (NCs) are promising for diagnostic and therapeutic applications in biophotonics due to relatively high biocompatibility and low toxicity. In our work, to fabricate Si/Ag NCs we applied the technique of laser ablation of monocrystalline silicon in water-ethanol solution containing AgNO3. The irradiation was carried out with laser pulses (1064 nm, 34 ps, 10 mJ) for 60 minutes. The initial amount of the AgNO3 and the ratio of water and ethanol in the aqueous solution were varied to optimize the technology. This relatively simple one-stage technology makes it possible to obtain stable and chemically pure Si/Ag NCs with a required morphology in quantities which are sufficient for further use in biomedical applications.