MAIN FIELDS OF BASIC AND APPLIED RESEARCH

Subject 1
High frequency electrodynamics of ferromagnetic
materials and creation of weak magnetic field sensors

Experimental and theoretical research in the field of electrophysics and electrodynamics of magnetic soft materials. Investigation of linear and non-linear magnetic impedance of ferromagnetic microwires and sandwiches. Development of new production technology of magnetic impedance elements sensitive to weak magnetic fields for magnetic field sensors of multifunctional application. Development of magnetometers with sensitivity up to 10^-7 T, they are unique in measuring all three components of magnetic field and its gradient in a wide dynamic range.

Subject 2
Interaction of electromagnetic waves with
complicated radio-physical structures and media

Development of calculating methods of scattering by complicated objects with regards to Russian and foreign achievements in diffraction theory. Development of electrodynamic models for the study electrophysical phenomena in both natural and synthesized  materials, as well as features and properties of structures based on such materials. A specific place is taken by fundamental research aimed at creation and studying of substances and materials with unique properties that cannot be found in nature.

Electrodynamic investigation of three-dimensional plasma and plasma-dielectric  structures that reflect or adsorb radio waves. Calculations and measurements to identify transmission and reflection coefficients of lattices made of tubes filled with plasma and without it, with different diameters and dielectric permittivity in a wide range of microwave frequencies. Calculations and measurements  of radar cross section of structures consisting of dielectric tubes of small diameter filled with plasma. Engineering development of controllable electromagnetic screens.

Subject 3
Studies of magnetoactive materials (materials with the
colossal magnetoresistance, type II superconductors)

Studies of thermomagnetic instabilities in superconductors: magnetic flux jumps, normal zone propagation, dendrite instability, and formation of spatial structures.

Electrodynamics of anisotropic high-T_c superconductors: macroturbulent instability, effects of commensurability of flux-line and crystal lattices, the effect of surfaces, planar and point defects on electromagnetic characteristics, mesoscopic-size superconductors.

Intrinsic Josephson effect in layered high-T_c superconductors, plasma modes, emission of THz range radiation by "fast" vortices - Cherenkov and transition radiation, photonic crystals in the mixed state.

Electronic characteristics of magnetic oxides: the Kugel-Khomskii model and phase separation, formation of stripe structures, giant isotope effect in manganites. Phase diagrams of materials with the colossal magnetoresistance: studies based on the Kondo-lattice type model with impurities, two-band model and redistribution of charge carriers between itinerant and localized states. Electron transport in the phase-separated magnetic oxides: conductivity, magnetoresistance, magnetic susceptibility, noise spectrum.

Subject 4
Development of technologies for new materials production and
investigation of interaction of the materials with electromagnetic fields

Synthesis of new metamaterials by vacuum sputtering. Metal-dielectric nano-composite systems, structured multilayered-thin-film composites etc.

Deposition of screening coatings operating in optical, microwave and radiowave ranges.

Development of technologies for iron films deposition with record values of high frequency permeability. Investigation of influence of technological peculiarities to nano- and microstructures of films. Effect of composite film topology on frequency dependences of magnetic permeability and dielectric permittivity.

Assembling of composite materials with perfect properties in microwave and radiowave ranges using thin magnetic and dielectric films. Structured films form a basis for creation of multilayered materials for applications with outstanding operating parameters.

Elaboration of methods for ordered and disordered systems at different scales of their sizes fabrication, as nano-composites so macroscopic assemblages for photonic crystals and structured systems with negative permeability and/or permittivity.

Experimental and theoretical investigation of band structures of photonic crystals, including magnetic photonic and magnetostatic crystals.

Development of new thin film systems based on multilayer coatings produced by deposition of transparent dielectric and metal layers. Composition of multifunctional coatings operating in broad frequency ranges. Development of production technologies for multilayered energy-saving coatings for glazing of industrial, residential and municipal buildings, various vehicles.

Subject 5
Effective electrodynamic parameters of
composite materials and inhomogeneous media

Elaboration of measuring methods for permeability and permittivity of materials in microwave range.

Investigation of effective material parameters of composite and inhomogeneous materials in microwave range.

Development of radar absorbing materials and coatings for microwave range.

Subject 6
Selection of initial components and optimization of composition and
structures of high efficient multi-component radar absorbing coatings

Development of high efficient radar absorbing elastomer coatings for upgrading explotable and in-design units of airborne, marine, on-land and specific articles.

Development of radar absorbing coatings based of Si-organic elastomers, operable in all climatic conditions within temperature gap of –60^o ÷ +200^o C.

Development of polyurethane elastomers, operable in all climatic conditions within temperature gap of –60^o ÷ +150^o C.

Development of radar absorbing coatings based on epoxiurethane elastomers, operable in tropic climate conditions, that is in high humidity conditions and at high temperature (up to 60^o C).

Subject 7
Experimental and theoretical investigations of
composition and functioning portable fuel elements

Conceptual development of portable fuel elements with proton-exchange membranes for autonomous portable charging units for high-tech devices.

Identification of a principle pattern of a portable fuel element and requirements to parameters of its components.

Technological development of forming integrated membrane units. Elaboration of nano-scaled structure of catalyst layers, process of deposition of catalyst layers onto solid polymer membranes, diagnostics and training of integrated membrane units.

Investigation of new types of proton conducting membranes.

Elaboration of technological approaches and requirements to electrode-gas-diffusion layers and corrosion–proofed bipolar plates.

Production of pilot samples of a portable fuel element consisting of plates with gas distributing channels and electrode layers, an integrated membrane unit and fuel-feeding and current collecting parts.

Construction of theoretical models of functioning of portable fuel elements with proton-exchange membranes.

Research and development of unified technology for producing small-size fuel elements.

Subject 8
Technology for reducing radar cross section (stealth-technology)

Development of technologies of radar cross section  reduction of defense equipment advanced samples by means of specific structures and materials.

Development of special science direction for simulating units with reduced radar cross section, e.g. aircraft.

Solution to the problem of scattered field formation for complex units with unhomogeneuos radar absorbing coatings.

Subject 9
Development and installation of compact ranges for measuring
radio-physical parameters of units and antennas

An anechoic chamber is the main part of a compact range for measuring interaction of radio-waves with units of complicated shapes, patterns of antenna directivity, analysis of electromagnetic compatibility, etc. A compact range comprises a collimator for wave flat front, positioners and microwave equipment, and must be equipped by radar absorbing materials. ITAE production technology for honeycomb structured radar absorbing materials is elaborated. Modern anechoic chambers are constructed both at home and abroad by ITAE specialists.