THE EFFECTS OF 830 NM LASER RADIATION ON NANOSTRUCTURED COMPOSITE SUBSTRATES
Abstract:
Laser radiation produces different effects on composite substrates made of nanostructured materials according to the data from the literature. In this study, laser radiation with a wavelength of 830 nm was used for the irradiation of nanostructured substrates with hydroxyapatite (HA), gold nanoparticles (AuNPs) and graphene in the composition. The laser parameters used were: pulse mode – 50 Hz and the energy density of 4.4 J/cm2, for 30 seconds. To evaluate the nanostructured substrates changes, Raman spectroscopy was performed before and after laser irradiation. The results of the performed investigations have shown that there are no changes produced by laser radiation on composite substrates. Also, no thermal alteration of substrates after laser irradiation was found. The wavelength of 830 nm used in this study should have effect mainly on cells and less on substrates, according to the study.
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