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Information × Registration Number 0221U100722, 0120U104925 , R & D reports Title Derivation of basic formulas based on the boundary integral equations for the analysis of scattering and absorption of terahertz waves by metasurfaces in the form of periodic gratings of graphene elements located on a dielectric substrate. Development of numerical algorithms for calculation after the derived formulas. Verification of computer programs to find electromagnetic fields. popup.stage_title Head Nosich Oleksandr Y., д.ф.-м.н. Registration Date 08-01-2021 Organization O. Ya. Usikov Institute for Radiophysics and Electronics NAS of Ukraine popup.description2  The work on the project was performed in accordance with the requirements of the Terms of Reference. This included development of the basic equations and formulas based on boundary integral equations and the method of analytical regularization for analysis of scattering and absorption of terahertz waves on metasurfaces in the form of periodic gratings of monolayer graphene strips attached to a dielectric substrate. According to the derived formulas, effective numerical algorithms for the analysis of scattering and absorption of terahertz waves on lattices made of graphene strips have been developed. Such algorithms will have mathematically guaranteed convergence and high accuracy, which can reach the level of machine accuracy. Computer programs for the detection of electromagnetic fields in the scattering and absorption of terahertz waves on gratings of graphene strips attached to a dielectric substrate were developed and verified. The consistency of the results obtained with the help of the developed programs with the previously published works using other, less efficient and less fast methods, for example, the method of moments, is demonstrated. Numerical studies of the selectivity of the graphene gratings in the terahertz frequency range for verification of computer programs were performed. Product Description popup.authors Yevtushenko Fedir O. Arkhypova Kateryna A Dukhopelnikov Evgen V. Dukhopelnykov Sergii V popup.nrat_date 2021-03-17 Close