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Information × Registration Number 0125U000468, R & D request Title Methods for Modeling Diffraction Radiation, Propagation, and Generation of Electromagnetic Waves in the Gigahertz and Terahertz Frequency Ranges in the Presence of Metamaterials and Graphene-like 2D Materials (code «Ornatus») Head Kuzmychov Ihor K., д.ф.-м.н. Registration Date 20-01-2025 Organization O. Ya. Usikov Institute for Radiophysics and Electronics NAS of Ukraine popup.description1 The objective of the proposed project is to develop new and utilize existing theoretical and experimental methods for electrodynamic modeling of patterns and phenomena such as diffraction, propagation, absorption, scattering, transformation, and channeling of radiation, as well as the generation of electromagnetic waves in the gigahertz and terahertz frequency ranges in: open resonant structures and layered heterogeneous nonlinear dielectric layers; graphene-like 2D materials interacting with nearby periodic structures; three-dimensional cylindrical microstructures, both canonical, in the form of circular graphene cylinders of finite length, and quasi-periodic gratings composed of cylindrical graphene ribbons arranged on a cylindrical surface in the azimuthal direction; multi-stage diffraction radiation generators with distributed interaction of an electron beam with the field of an open resonant system; open resonators supporting Hermite-Gaussian fields, which include oversized rectangular waveguide segments; resonators formed by reflective axicons supporting non-diffracting Bessel-Gaussian fields; multifunctional filtering components combining two or more functions in a single device; filtering components in vacuum electronics devices, which can be used in clinotron resonators to suppress wave transmission through the anode slot; electrodynamic systems of vacuum electronic devices based on slow, volumetric, and hybrid waves with spatially extended electron beams of ribbon and cylindrical geometry; classical vacuum generators and amplifiers of the M-type and compact vacuum generators; open resonant systems of coherent generators with ribbon electron beams; leaky-wave resonators. popup.nrat_date 2025-01-20 Close