Study of the Dynamics of Dissolution and Laser Heating of Germanium Nanoparticles

We report the results of the dissolution dynamics of germanium nanoparticles synthesized by laser ablation in distilled water and isopropanol. It is shown that germanium nanoparticles dissolve almost completely in distilled water within 24 h. A comparative experiment is performed on laser heating of distilled water and an aqueous germanium nanoparticles solution with an average nanoparticle size of ~130 nm and a concentration of 0.8 mg/ml, which makes it possible to construct heating and cooling curves. Under conditions of the experiment, the heating of the nanoparticle solution increased by 36% compared to distilled water. The obtained results can be used in photohyperthermia technologies for the treatment of cancer tumors.