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Information × Registration Number 0222U001394, 0119U002548 , R & D reports Title Numerical algorithms for analysis, methods and tools for measuring of electrodynamic characteristics of absorbing, nonlinear and magnetic metamaterials and composites. popup.stage_title Head Registration Date 26-01-2022 Organization V.N. Karazin Kharkiv National University popup.description2  The object of research is composites and metamaterials and methods and means of measuring their electrodynamic characteristics. The subject of research is the response of metamaterials and composites to electromagnetic excitation and the physical phenomena that cause them. The purpose of the project is to develop tools and methods for measuring the coefficients of reflection and absorption of electromagnetic waves from samples of composites and metamaterials; numerical models and algorithms for calculating these coefficients, as well as the analysis of physical phenomena that occur during the interaction of samples with electromagnetic fields, based on these models. Research methods are methods of diffraction theory and methods of experimental radiophysics. Results: The model of the reflectionmeter in the range from 4 GHz to 14 GHz with a possibility of control of frequency is created. Methods for measuring the scattering and absorption coefficients of composites in free space and waveguides based on comparing of results of measurement and numerical modeling of the corresponding diffraction problem have been developed. Mathematical models of a number of radio engineering systems have been developed. We are talking about absorber models based on composites and metamaterials; models of plasmon-polariton antenna, which is able to operate in the optical and middle infrared range simultaneously, and whose properties can be adjusted by thermal or light action; metaferite, formed by a periodic sequence of iron wires with varying degrees of magnetization; collimator with bistable response to electromagnetic excitation. In addition, it proposes the concept of creating a magnetic optical lens with controlled focal length, based on an ultrathin (subwavelength) layer of magnetic material placed in an external magnetic field. Product Description popup.authors Bagatska Olga V. Vinnichenko Sergiy O. Demchenko Oleksiy A. Domina Katerina L. Legenkiy Maxim M. Rybin Oleg M. Tuz Volodymyr R. Khardikov Viacheslav V. popup.nrat_date 2022-03-09 Close