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Information × Registration Number 0220U100011, 0119U100609 , R & D reports Title Innovative use of solid and nanocomposite materials to control a subterahertz radiation popup.stage_title Head Andrushchak Nazariy А, Кандидат технічних наук Registration Date 02-01-2020 Organization Lviv Polytechnic National University popup.description2 As a result of stage one of the research, the setup was modernized, and techniques to measure the parameters of crystalline and nanoporous materials in the 33 GHz and 240 GHz ranges were developed. The prototype of the setup for measuring the acousto-optic efficiency of crystalline materials in the frequency range 30-300 GHz has been created. Nanocrystallites (KDP, ADP, and Ba(NO3)2) were manufactured for the first time in the pores of Al2O3 matrices with a pore diameter of 60 nm and sizes 20×20mm2. Also, the parameters of solid-state materials Li2B4O7, Ge, LiTaO3, LiNbO3, and crystalline nanocomposites (refractive index, transmittance, absorption, reflection) in the subTHz range of electromagnetic radiation were performed for the first time. The technique of estimation of materials suitable for sub-THz frequency acoustic optics devices is proposed. Also, an algorithm for the synthesis of dispersion relations for porous composite materials of complex structure is described based on the numerical simulation of the problem of propagation of electromagnetic waves in the frequency domain using COMSOL Multiphysics. Besides, the acousto-optical quality factor M2 for solid-state materials Li2B4O7, CaWO4, CaMoO4 in the sub-THz range of electromagnetic radiation was calculated for the first time.  Product Description popup.authors Bak Roman I. Kovbasiuk Taras M. Kost Yaroslav P. Kryvyy Rostyslav Z. Melnyk Mykhaylo R. Yavorskyi Nazarii B. popup.nrat_date 2020-04-02 Close