Факультет електроніки та інформаційних технологій (ЕлІТ)
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Item Kinetics of Nanostructuring Processes of Material Surface under Influence of Laser Radiation(MDPI, 2020) Хоменко, Олексій Віталійович; Хоменко, Алексей Витальевич; Khomenko, Oleksii Vitaliiovych; Ющенко, Ольга Володимирівна; Ющенко, Ольга Владимировна; Yushchenko, Olha Volodymyrivna; Бадалян, Анна Юріївна; Бадалян, Анна Юрьевна; Badalian, Anna YuriivnaIn this paper, further research is conducted for a synergetic model that describes the state of the material surface in the process of laser irradiation. Namely, the previously studied approach of mutually coordinated behavior of the relaxation field, concentration of relaxation zones, and field of stress is supplemented with a nonlinear term. It is shown that, using this model, we can describe the behavior of different types of systems. During the analysis, five stationary states were found which correspond to different modes of formation of relaxation areas on the surface. The regions of parameters are found at which one or another mode of the system behavior is established. Phase portraits are constructed for each mode and the kinetics of the system is described. The obtained results qualitatively coincide with the experimental data.Item The Investigation of the External Influence on the Motion Regimes of Nanoparticles(Sumy State University, 2012) Ющенко, Ольга Володимирівна; Ющенко, Ольга Владимировна; Yushchenko, Olha Volodymyrivna; Бадалян, Анна Юріївна; Бадалян, Анна Юрьевна; Badalian, Anna YuriivnaOn the basis of self-consistent Lorenz system, taking into account the dispersion of the characteristic time of the average velocity variation the motion regimes of nanoparticles were investigated within the rigid mechanism of the self-organization. The influence of the environment was taken into account by means of a stochastic source in the equation describing the evolution of the control parameter. As a result, the Fokker-Planck equation has been obtained and has been solved in the steady state, the phase diagram of the system and the dependence of the average velocity of nanoparticles have been constructed and analyzed. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/34961