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Information × Registration Number 0221U102521, 0120U102213 , R & D reports Title Energy transformations of electromagnetic waves of the millimeter and terahertz ranges in diffraction processes on impedance structures. popup.stage_title Head Katrich Viktor O., Доктор фізико-математичних наук Registration Date 04-02-2021 Organization V.N. Karazin Kharkiv National University popup.description2  The object of research are the physical process of ponderomotive action of electromagnetic waves on vibrator scatterers with constant and variable along the vibrators distributed impedance, as well as physical phenomena that occur during excitation of 3D slot transmission lines and propagation of electromagnetic waves in such channeling structures. The aim of the work is further development of numerical-analytical methods of research of ponderomotive action of electromagnetic waves on vibrator scatterers with distributed impedance, creation of integrated mathematical models based on them, which allow to study ponderomotive influence on mechanical motion of vibrator elements, development of effective methods of analysis and synthesis of slot transmission lines of millimeter and terahertz waves and development of recommendations for the creation of new elements and devices of such ranges. At the first stage of work mathematical models, which allow to investigate the influence of ponderomotive action of electromagnetic waves on vibrator scatterers with constant and variable distributed impedance are constructed, the analysis of ponderomotive influence of a plane electromagnetic wave on thin vibrator scatterers with weakly perturbed surface impedance is carried out. The correctness of the diffraction problem on a narrow linear slit cut in a two-sided impedance plane is analyzed, a method of numerical-analytical solution of the problem of slot radiation into space over an infinite impedance screen has been developed. The eigenmodes of a complex 3D-chiral structure formed by two conjugate diaphragms in a circular waveguide are investigated. Each diaphragm has slots that form a periodic structure in the azimuthal direction. The influence of the number of slots, their sizes and shapes on the natural frequencies has been studied. The main attention is paid to the phenomena of artificial optical activity and electrodynamically induced transparency. These phenomena can be use Product Description popup.authors Berdnik Sergey L. Kyrylenko Anatolii O Kokodii Mykola H Nesterenko Mikhail V Pshenichnaya Svetlana V. Steshenko Sergii O. popup.nrat_date 2021-02-04 Close