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Information × Registration Number 0222U001387, 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 26-01-2022 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 second stage of the work, the features of the pressure of electromagnetic radiation on thin metal vibrators were studied. It was found that the radiation pressure increases when the vibrator length is close to half the wavelength. It is shown that the efficiency factor of the radiation pressure increases with a decrease in the diameter of the vibrator. The research results can be used to solve levitation problems and to control the position of targets using microwave radiation. The eigenmodes of 3D meta-atoms in circular waveguides formed by chiral diaphragms with rectangular slots are investigated. It is shown how the main characteristics of meta-atoms are related to their vibrations. Special attention is paid to the influence of the topology of a meta-atom on its characteristics, in particular, on the manifestation of artificial optical activity. The conditions for increasing the operating frequency band of polarization plane rotators based on multilayer two-layer plane-chiral diaphragms in a circular waveguide are determined. Product Description popup.authors Berdnyk Serhii L. Kyrylenko Anatolii O. Kokodii Mykola H. Nesterenko Mykhailo V. Pshenichnaya Svetlana V. Steshenko Sergiy O. popup.nrat_date 2022-03-09 Close