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Information × Registration Number 0223U003742, 0122U200724 , R & D reports Title Radiophysical phenomena in nanoelectronic systems based on graphene, unconventional superconductors and magnetized semiconductors popup.stage_title Head Nosych Oleksandr Yo., д.ф.-м.н. Registration Date 26-06-2023 Organization O. Ya. Usikov Institute for Radiophysics and Electronics NAS of Ukraine popup.description2 The object of research is two-dimensional and three-dimensional open resonators, waveguides and gratings with elements shaped as strips, wires, tubes and disks, made of graphene, non-traditional superconductors, and magnetized semiconductors, that use scattering, absorption and radiation of terahertz and shorter-wavelength waves. The aim of the work is the modeling and measuring the scattering, absorption, radiation, and focusing of waves by the above mentioned structures, based on the methods of contemporary mathematical physics and corresponding numerical and experimental methods, developed by the authors; besides, a detailed study of various resonance and quasi-optical effects is envisaged. Open resonators, waveguides and gratings used in the terahertz and shorter electromagnetic-wave technologies have dimensions that are comparable to the wavelengths in free space and in dielectric materials. This leads to the coexistence of complex interference and diffraction phenomena, as well as various resonance effects. If the elements, used in such technologies, are made of graphene or superconductors or semiconductors, another wave measure appears - the length of the surface plasmon wave, which can be much smaller than the previous two. Therefore, mathematical and numerical modeling of these devices is a complicated scientific problem. This is due to the need of taking into account the interaction of two different wave mechanisms: quasi-optical propagation, refraction and reflection of waves and resonant scattering at the frequencies close to the natural frequencies of various natural modes. Additional difficulties arise in the presence of elements of graphene and superconductor or semiconductor films, because the frequencies of their plasmon natural modes are in the quasi-static region. The results of the work have been published in the leading international journals (10 journal papers) and in the proceedings of international conferences (13 conference papers). Product Description popup.authors Averkov Yuriy O. Apostolov Stanislav S. Balaban Mykhaylo V. Barannyk Oleksandr A. Gubin Olexey I. Dukhopelnykov Sergii V. Kadyhrob Dmytro V. Lavrinovich Olexander A. Maizelis Zakhar O Melnik Sergij S Natarov Denys M. Prokopenko Yuriy Volodymyrovych Protsenko Iryna O. Rokhmanova Tetiana M Cherpak Nickolay Timofeevich Yampolskii Valerii O. popup.nrat_date 2023-06-26 Close