Central Research Technological Institute TECHNOMASH

Moscow, Russia

Central Research Technological Institute TECHNOMASH

Moscow, Russia
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Makeeva G.S.,Penza State University | Golovanov O.A.,Penza State University | Rinkevich A.B.,RAS Institute of Metal Physics | Samoylovich M.I.,Central Research Technological Institute Technomash
European Microwave Week 2014: Connecting the Future, EuMW 2014 - Conference Proceedings; EuMC 2014: 44th European Microwave Conference | Year: 2014

A numerical technique for the accurate modeling of nonreciprocal microwave devices (MDs) based on magnetic nanocomposites by using rigorous mathematical models to solve the 3D diffraction boundary problems is developed. The models are based on the solution of Maxwell's equations with electrodynamic boundary conditions complemented by the Landau-Lifshitz equation with the exchange term. Using the decomposition algorithm based on the projection method by autonomous blocks with magnetic nanoinclusions and virtual Floquet channels (MFABs) the elements of multimode multi-channel scattering matrix of magnetic opal nanocomposite-based circulators were calculated at microwave frequencies. The waveguide transmission and reflection measurements of scattering parameters of the circulators based on magnetic opals were performed at frequencies from 14 GHz to 38 GHz. The numerical technique shows an excellent agreement with experimental data. It is shown that the magnetic opal nanocomposite-based circulators have improved performances: bigger isolation, smaller insertion losses and a wider pass band as compared to ferrite-based MDs. © 2014 European Microwave Association.


Samoylovich M.I.,Central Research Technological Institute Technomash | Talis A.L.,RAS Nesmeyanov Institute of Organoelement Compounds
Crystallography Reports | Year: 2013

The developed apparatus of the "structural application" of algebraic geometry and topology makes it possible to determine topologically stable helicoidally-like packings of polyhedra (clusters). A packing found is limited by a minimal surface with zero instability index; this surface is set by the Weierstrass representation and corresponds to the bifurcation point. The symmetries of the packings under consideration are determined by four-dimensional polyhedra (polytopes) from a closed sequence, which begins with diamondlike polytope {240}. One example of these packings is a packing of tetrahedra, which arises as a result of the multiplication of a peculiar starting aggregation of tetrahedra by a fractional 40/11 axis with an angle of helical rotation of 99. The arrangement of atoms in particular positions of this starting aggregation allows one to obtain a model of the α-helix. This apparatus makes it possible to determine a priori the symmetry parameters of DNA double helices. © 2013 Pleiades Publishing, Ltd.


Tsvetkov M.Y.,Russian Academy of Sciences | Khlebtsov B.N.,Russian Academy of Sciences | Khanadeev V.A.,Russian Academy of Sciences | Bagratashvili V.N.,Russian Academy of Sciences | And 3 more authors.
Nanoscale Research Letters | Year: 2013

We describe a new approach to the fabrication of surface-enhanced Raman scattering (SERS) substrates using gold nanorod (GNR) nanopowders to prepare concentrated GNR sols, followed by their deposition on an opal-like photonic crystal (OPC) film formed on a silicon wafer. For comparative experiments, we also prepared GNR assemblies on plain silicon wafers. GNR-OPC substrates combine the increased specific surface, owing to the multilayer silicon nanosphere structure, and various spatial GNR configurations, including those with possible plasmonic hot spots. We demonstrate here the existence of the optimal OPC thickness and GNR deposition density for the maximal SERS effect. All other things being equal, the analytical integral SERS enhancement of the GNR-OPC substrates is higher than that of the thick, randomly oriented GNR assemblies on plain silicon wafers. Several ways to further optimize the strategy suggested are discussed. © 2013 Tsvetkov et al.


Rinkevich A.B.,RAS Institute of Metal Physics | Samoilovich M.I.,Central Research Technological Institute TECHNOMASH | Klescheva S.M.,Central Research Technological Institute TECHNOMASH | Perov D.V.,RAS Institute of Metal Physics | And 2 more authors.
IEEE Transactions on Nanotechnology | Year: 2014

The millimeter-waveband properties of gradient cobalt and iridium films deposited on the surface of opal matrix have been studied. The transmission and reflection coefficients are measured in frequency range from 26 to 38 GHz. The algorithm is developed to extract the value of microwave effective conductivity from the frequency dependence of transmission coefficient. The values of microwave conductivity are three orders of magnitude greater than dc conductivity. Besides microwave measurements, electron microscopy and chemical composition studies are carried out. © 2002-2012 IEEE.


Rinkevich A.B.,RAS Institute of Metal Physics | Burkhanov A.M.,RAS Institute of Metal Physics | Perov D.V.,RAS Institute of Metal Physics | Samoilovich M.I.,Central Research Technological Institute TECHNOMASH | And 2 more authors.
Photonics and Nanostructures - Fundamentals and Applications | Year: 2014

Magnetic properties of magnetophotonic crystals based on opal matrices have been studied as well as their electromagnetic properties in millimeter waveband. The particles of cobalt oxide are embedded into the inter-sphere voids of the matrix. After annealing in hydrogen the cobalt oxide particles transform to metallic cobalt. It has been shown that if antiferromagnetic cobalt oxide remains besides ferromagnetic cobalt, the low-temperature magnetic hysteresis loop is shifted along the field axis. Magnetic field influences essentially on the microwave transmission and reflection coefficients only after annealing in hydrogen that is if the ferromagnetic phase presents in the sample. The spectra of magnetic resonance and antiresonance are studied. © 2013 Elsevier B.V.


Rinkevich A.B.,RAS Institute of Metal Physics | Perov D.V.,RAS Institute of Metal Physics | Pakhomov Y.A.,RAS Institute of Metal Physics | Samoylovich M.I.,Central Research Technological Institute TECHNOMASH | Kuznetsov E.A.,Nizhny Tagil branch of the Ekaterinburg State Social Pedagogical University
Journal of Infrared, Millimeter, and Terahertz Waves | Year: 2016

The dielectric properties of 3D nanocomposites based on opal matrices containing the particles of compounds with spinel structure have been studied. Microwave measurements have been carried out in the frequency range from 26 to 38 GHz. The frequency dependences of transmission and reflection coefficients are obtained. The values of the real and imaginary parts of complex dielectric permittivity have been retrieved. The X-ray phase analysis of the nanocomposites is performed and their structures are studied. © 2016 Springer Science+Business Media New York


Rinkevich A.B.,RAS Institute of Metal Physics | Perov D.V.,RAS Institute of Metal Physics | Demokritov S.O.,RAS Institute of Metal Physics | Demokritov S.O.,University of Munster | And 2 more authors.
Photonics and Nanostructures - Fundamentals and Applications | Year: 2015

Metamaterials based on opal matrix and containing magnetic particles are studied both experimentally and theoretically and their complex refractive coefficients at frequencies of millimeter waveband are obtained by comparing the results of calculations with the experimental data on transmission and reflection coefficients and their variations with an applied magnetic field. The metamaterials under study contain metallic cobalt, nickel and iron particles, nickel-zinc ferrite and silver particles, or ferrite-garnet Nd3Fe5O12 particles. A parameter, characterizing the nonuniformity of electromagnetic fields at different distances from a magnetic particle, has been introduced and calculated. It is found that the nonuniformity drastically varies depending on the distance from magnetic particle and on external magnetic field. © 2015.


Rinkevich A.B.,RAS Institute of Metal Physics | Pardavi-Horvath M.,George Washington University | Samoylovich M.I.,Central Research Technological Institute TECHNOMASH | Perov D.V.,RAS Institute of Metal Physics
IEEE Transactions on Magnetics | Year: 2016

The microwave properties of magnetic 3-D nanocomposites, based on opal matrices, modified by the introduction of 3-D transition and palladium metal particles inside the intersphere voids, have been studied. The presence of palladium in the nanocomposites under study leads to a number of distinct features. The frequency dependence of transmission and reflection coefficients at room temperature, in the frequency range of 26-38 GHz, was measured, and magnetic resonance and antiresonance have been studied for several opal-based nanocomposites, containing Fe, Ni, and Pd. The magnitude of the magnetic resonance peak height is less for the nanocomposites containing Pd particles than that of the nanocomposites with transition metals without Pd. For the nanocomposites with only one metal, Ni or Fe, the antiresonance is also observed. Due to the large variations of the microwave transmission and reflection coefficients, this class of nanocomposite materials seems to be applicable in magnetic field driven devices in the millimeter wavelength band. © 1965-2012 IEEE.


Samoylovich M.I.,Central Research Technological Institute TECHNOMASH | Tcherniega N.V.,RAS Lebedev Physical Institute | Kudryavtseva A.D.,RAS Lebedev Physical Institute | Belyanin A.F.,Central Research Technological Institute TECHNOMASH
Proceedings of the International Conference on Advanced Optoelectronics and Lasers, CAOL | Year: 2013

Nonlinear optical effects in lattice SiO2 nanosphere packings under pulse laser excitation are experimentally studied. Pulse generation of narrow-beam X-ray radiation is determined in this samples. The possibility of using this effect in medicine are considered. © 2013 IEEE.


Rinkevich A.B.,RAS Institute of Metal Physics | Perov D.V.,RAS Institute of Metal Physics | Samoilovich M.I.,Central Research Technological Institute TECHNOMASH | Klescheva S.M.,Central Research Technological Institute TECHNOMASH
Metamaterials | Year: 2012

Microwave properties of the 3D-nanocomposite media based on opal matrix with the metallic cobalt nanoparticles embedded have been investigated. Magnetic antiresonance is observed at frequencies of millimeter waveband along with the ferromagnetic resonance. The experimental magnetic field dependence of transmission coefficient is compared to the theoretically calculated one. The magnetic field dependence of the refraction coefficient is restored and it is shown that the refraction index is close to zero in weak magnetic fields. © 2012 Published by Elsevier B.V.

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