Piatnytsia V. Optical and electrophysical properties of the systems of the nanoparticles of different shape and dimensions

This thesis is devoted to the study of the optical and electrophysical properties of the systems of the nanoparticles of different shape and dimensions. The analytical form of the wave functions of the electrons in the pyramid and cone-shaped quantum dots are obtained. The strong dependence of the electron spectrum on the vertex angle in the tip-like particles was shown. The effective susceptibility and the absorption spectrum of the inhomogeneous array of the nanoparticles are obtained. In the frames of the model of the near-field interactions the luminescence spectra of the inhomogeneous arrays of the semiconductor nanoparticles are calculated. It was shown that the function of the distribution of the particles on its shape and size is the cause of the peculiar structure of the inhomogeneous array of the nanoparticles. The model of the nonlinear dispersion interaction between the nonpoint particles is built. The strong dependence of the depth and position of the minima of the potential energy on the shape, dimension and orientation of the nanoparticles was obtained during the calculations. On the base of the model of the nonlinear interaction between the nanoparticles the model of the recognition mechanism of the bacteria by the virus T4 is proposed. The explanation of the inhibition of the viral activity due to the nanoparticles is proposed. The model of the additional mechanism of the nanocatalyses near the metal nanoparticle is set.