Homogeneous Nucleation and Diffusional Growth of a Nanoparticle under Ultraso Irradiation
Rekhviashvili S.Sh.1
1Institute of Applied Mathematics and Automatization, Kabardino-Balkar Scientific Center, Russian Academy of Sciences, Nalchik, Russia
Email: rsergo@mail.ru
A theoretical model is proposed for the homogeneous nucleation and growth of an individual nucleus (nanoparticle) in a liquid-phase medium under ultrasonic excitation. The model combines a thermodynamic approach, which enables calculation of the nucleation work and the critical radius of the nucleus in a non-stationary pressure field, with a kinetic description of diffusion-driven mass transfer and the growth of an individual nanoparticle under acoustic oscillations. The proposed approach establishes a relationship between the intensity of ultrasonic exposure and the characteristics of nanoparticle formation and can also serve as a basis for constructing the statistical size distribution of nanoparticles. Keywords: homogeneous nucleation, ultrasonic treatment, critical nucleus radius, diffusion growth, acoustic oscillations, nanoparticle, thermodynamic model, kinetic mode.
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