Chepela L. Features of thermophysical properties of nanoscale composites with a developed interface

In the introduction, was substantiated the relevance, formulated the purpose, object and subject of the study, indicated the scientific novelty of the results and their practical significance. The methods of research used in the thesis and the personal contribution of the applicant are indicated, as well as data on the approbation of the work and the author's publications. The first chapter analyzes photoacoustic and photothermal phenomena as key tools for studying the physical properties of nanomaterials. The main regularities of these phenomena, their peculiarities according to the materials under study, and research methods for obtaining information on the thermal and acoustic characteristics of nanomaterials, such as photoacoustic microscopy and Raman scattering, are described. Also, familiar methods for producing nanostructures, such as disrupted silicon and nanofibers, are reviewed, with a focus on methods such as chemical etching and the vapor-liquid-solid method. A review of the literature on the physical characteristics of photoacoustic conversion in nanostructures and the effect of heating on the Raman spectra of porous silicon samples is given. The importance of conducting our own experimental studies of heat transfer in such nanocomposites as porous silicon with liquid fillers, silicon nanowires, and silicon multilayer structures using photoacoustic methods and Raman scattering is highlighted.