Liushenko M. Interaction of electromagnetic radiation with multilayer nanoparticles and nanolayers: direct and inverse problems

The Thesis is devoted to the studing of changes in response to the electromagnetic interaction of EMR with the ensembles of nanoparticles of various shapes are in space or on the solid. A general theoretical approach for solving the problems of interaction of EMR with multilayered balls in the wave approximation and ellipsoid in the electrostatic approximation is proposed and implemented in tihs thesis. A full analysis of the pos-sibility of additional plasmons in two-layer spherical and ellipsoidal nanoparticles for different types of materials core and shell was made. It was also theoretically justifited that multilayer coatings with metal nanolayers located on the solid surface have filter-ing properties. The explanation of the red shift of plasmon frequency for particles located on the solid surface, which occurs when taking into account multipole interac-tion, was provided. A method for the electrodynamical properties of the inner layers of inhomogeneous structures by spectral radiometry data worked out. The functions of the density and of the size distribution for nuclei and membranes were defined using the experimental spectra of light attenuation in suspensions of silver nanoparticles coated with silver oxide. The practical value of the defined opportunity was obtained to develop guidelines for the creation of new materials with preset electrodynamics properties.