ИСТИНА

Nowadays, silicon nanoparticles (SiNPs) formed by laser technologies have potential in diagnostic and therapeutic applications in biomedicine due to their high biocompatibility and biodegradability, as well as low level toxicity [1–3]. To fabricate SiNPs we propose using the technique of laser fragmentation of silicon microparticles (1–6 μm) in water or ethanol exposed to laser pulses (1064 nm, 34 ps). The initial concentrations of the silicon micropowder and irradiation time were varied to optimize the technique. This relatively simple technology allows producing stable and chemically pure SiNPs in quantities large enough for further use in biomedical applications [3]. We have focused our attention on the study of relationships between structural properties of the fabricated nanoparticles and modes of their formation. Additionally, elastic scattering and absorption of the SiNPs suspensions were analyzed.