A. A. Bubnov, V. A. Oleshchenko, V. Yu. Timoshenko
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Laser-Induced Photoheating of an Aqueous Suspension of Titanium Nitride Nanoparticles under Irradiation with a Synchronized Scanning near-IR Laser Beam
Dynamic photohyperthermia is a method based on synchronization of a moving fluid flow and a laser beam. In this paper, the method is simulated and experimentally tested for a flow of an aqueous suspension of titanium nitride (TiN) nanoparticles (NPs) irradiated with continuous-wave laser radiation in the spectral absorption region of the NPs. A model is constructed that takes into account optical and photothermal effects associated with TiN NPs, i.e., scattering, absorption, and heat exchange in water. A semiconductor laser diode with a wavelength of 808 nm and a power of 0.35 W is used for photoheating of an aqueous suspension of NPs. It is found that the magnitude of photoheating of the aqueous NP suspension flow increases with synchronization of the scanning laser beam and moving flow of TiN NPs.
期刊介绍：
Bulletin of the Lebedev Physics Institute is an international peer reviewed journal that publishes results of new original experimental and theoretical studies on all topics of physics: theoretical physics; atomic and molecular physics; nuclear physics; optics; lasers; condensed matter; physics of solids; biophysics, and others.
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