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Information × Registration Number 0121U113145, ( 0222U003331  0222U003332  0222U003333  ) R & D request Title Determination of the most interesting and optimal configurations of graphene metasurfaces. Systematic numerical analysis of some of the most interesting configurations of graphene metasurfaces. Checking and refining, if necessary, algorithms and programs for the cases of the most interesting / optimal configurations of graphene metasurfaces. Study of the influence of the period, the thickness of the substrate and its material on the characteristics of graphene target surfaces Head Nosich Oleksandr Yo., д.ф.-м.н. Registration Date 27-09-2021 Organization O. Ya. Usikov Institute for Radiophysics and Electronics NAS of Ukraine popup.description1 Development of reliable software for calculation of the scattering and absorption of terahertz waves by metasurfaces made of graphene strips on a substrate. This included systematic numerical analysis of several most promising configurations of graphene metasurfaces built on the finite and infinite gratings of graphene strips placed on the dielectric substrates. In particular, we studied the effect of the substrate thickness and material and the grating period on the characteristics of the terahertz wave scattering and absorption by such metasurfaces. The simulations were performed using the method of analytical regularization. The developed numerical algorithms have mathematically guaranteed convergence, that allows to calculate the scattering and absorption of waves with controlled accuracy. This study had demonstrated that any grating of graphene strips on a dielectric slab is a composite open resonator, able to support plasmon mode, slab modes, and lattice modes. By manipulating the parameters of graphene, one can tune the frequency of plasmon-mode resonances and control the scattered and absorbed power. popup.nrat_date 2024-12-09 Close