VIBROACOUSTIC CHARACTERISTICS OF COMPOSITE MATERIALS REINFORCED BY CARBON FIBRES by Irina V. Zlobina, Danila V. Morozov, Sergey P. Pavlov

Subjects: “…composite materials…”
Get full text

STUDYING THE INFLUENCE OF MICROWAVE RADIATION ON THE THERMOPHYSICAL CHARACTERISTICS OF REVERSED POLYMER COMPOSITION MATERIALS REINFORCED BY CARBON FIBERS by N. V. Bekrenev, I. V. Zlobina

“…The aim of the research is to study the influence of the microwave electromagnetic field on the thermophysical characteristics of PCM reinforced with carbon fibers as one of the factors indicating a certain restructuring of the material, leading to a change in its operational properties.Method. …”
Get full text

Calculation and Measurement of Dielectric Parameters of Ceramic and Ferroelectric Materials in the Microwave Range by V. S. Severikov, Kong Che Fam, V. I. Melnik

“…Due to their nonlinear properties, ferroelectrics find application in functional units with an electrical rearrangement of frequency and phase characteristics. Therefore, it is important to determine not only the relative permittivity of the material, but also the control coefficient in the RF– microwave wavelength ranges.Aim. …”
Get full text

Investigation of the Characteristics of a Photodetector with a High Photocurrent when Transmitting Microwave Radio Signals Through an Optical Fiber by I. Yu. Tatsenko, T. K. Legkova, A. V. Ivanov, A. B. Ustinov

“…Research of microwave signal losses as a function of optical power.Materials and Methods. …”
Get full text

Research into the Properties of a Composite Material for Microwave Applications Based on PTFE with Different Concentrations and Particle Sizes of Ceramic Filler by A. B. Kozyrev, A. E. Komlev, A. M. Sosunov, A. G. Altynnikov, R. A. Platonov

“…The technology of printed circuit boards (PCBs) is widely used in modern electronic instrumentation. PCBs for the microwave frequency range are made based on foil composite materials, in particular, polytetrafluoroethylene (PTFE). …”
Get full text

Dispersion Characteristics of Spin-Electromagnetic Waves in Planar Multiferroic Structures with Coplanar Transmission Line by Aleksei A. Nikitin, A. B. Ustinov, Andrey A. Nikitin, Erkki Lähderanta, Boris A. Kalinikos

“…All these advantages make the proposed structures perspective for development of new microwave devices.…”
Get full text

Microwave Sensors and Their Applications in Permittivity Measurement by Changjun Liu, Chongwei Liao, Yujie Peng, Weixin Zhang, Bo Wu, Peixiang Yang

Get full text

Investigation of the Propagation Characteristics of Magnetostatic Surface Waves in a Layered Structure of Left-Handed Materials (LHM) and ferrite (YIG) by Shawqi Mansourr, Mohammed Shabat, Majdi Hamada, Sameer Yassin

“…The characteristics of magnetostatic surface waves at microwave frequencies in a layered structure of left-handed material film and a semi-infinite linear ferrite substrate have been investigated. …”
Get full text

Structural evolution of carbon from methane pyrolysis in microwave plasma by Arman Miniyazov, Mazhyn Skakov, Timur Tulenbergenov, Igor Sokolov, Nuria Mukhamedova, Alina Agatanova, Aisara Sabyrtaeva, Tolkyn Akhmedi

“…This research investigates the synthesis of carbon materials produced via methane pyrolysis using microwave plasma at different magnetron powers (0.6, 1.0, and 1.4 kW), aiming to analyze how the power levels affect the properties of the resulting materials. …”
Get full text

Specific Features of Designing Microwave Photonic Receiving and Transmitting Channels of Onboard Systems for Communication, Radar and Radio Monitoring by I. V. Unchenko, A. A. Emelyanov

“…However, the current semiconductor microwave electronics has reached its limits in terms of frequency and dynamic characteristics. …”
Get full text

USE OF NATURAL DOLOMITE AS A CHEAP FOAMING AGENT FOR PRODUCING GLASS FOAMS FROM GLASS WASTE IN THE MICROWAVE FIELD by LUCIAN PAUNESCU, MARIUS FLORIN DRAGOESCU, SORIN MIRCEA AXINTE

“…The main advantage highlighted by the experiments is the very low specific energy consumption (below 1.5 kWh/kg), due to the peculiarities of the microwave heating technique. The foamed product has physical, mechanical and morphological characteristics (density between 0.30-0.32 g/cm3, thermal conductivity between 0.064-0.067 W/m·K, compressive strength in the range 2.2-2.6 MPa), which are similar to those of foams made by conventional methods and are suitable for its use as insulating material in construction. …”
Get full text

In Situ Synthesis of NPC-Cu₂O/CuO/rGO Composite via Dealloying and Microwave-Assisted Hydrothermal Technique by Mircea Nicolaescu, Sebastian Ambrus, Petru Hididis, Mina Morariu (Popescu), Iosif Hulka, Corina Orha, Carmen Lazau, Cosmin Codrean, Cornelia Bandas

“…Our study relates the transition to n-type rGO in microwave-assisted hydrothermal reactions, and also the development of an electrode material suitable for electrochemical applications based on the p-p-n junction NPC-Cu₂O/CuO/rGO heterostructure. …”
Get full text

Radio‑absorbing composite materials and coatings based on aluminum and iron oxides for electromagnetic radiation shielding by M. V. Tumilovich, D. I. Peñalosa Ovalle, O. V. Boiprav

“…Radio‑absorbing composite materials, coatings and shields based on aluminum and iron oxides have been developed for protection of microwave devices from electromagnetic radiation (EMR). …”
Get full text

Parametrical Synthesis of Radio Devices with the Set Quantity of Identical Cascades for Inclusion Variants of Jet Two-port Networks between a Nonlinear Part and Loading by A. A. Golovkov, A. V. Fomin

“…Development of algorithms for parametric synthesis of radio devices with an arbitrary number of identical cascades of the "nonlinear part – matching reactive quadrupole" type according to the criterion of ensuring the specified frequency characteristics. Non-linear parts are represented as a non-linear element and parallel or serial current or voltage feedback.Materials and methods. …”
Get full text

A Substrate Integrated Waveguide Slotted Antenna by V. G. Koshkid’ko, Ya. O. Galtsov, D. A. Portnykh

“…To simulate a SIW-based slotted antenna with characteristics similar to those of a conventional antenna array based on a hollow metal waveguide.Materials and methods. …”
Get full text

Modeling of the electromagnetic field of radiating aperture by V. N. Isakov, V. S. Lankina

“…The results can also be used as illustration material for teaching the academic disciplines “Electrodynamics and radio wave propagation” and “Microwave devices and antennas”.…”
Get full text

Synthesis of an efficient MOF heterogeneous catalyst (UiO-66-NH2–Pd) for C–O cross-coupling reactions by Abdulrahman A. Almehizia, Anjan Kumar, Yashwantsinh Jadeja, R. Roopashree, Aditya Kashyap, Radhwan Abdul Kareem, V. Kavitha, Subhashree Ray, Chou-Yi Hsu, Pranchal Rajput

“…Moreover, this nanostructured material offers notable advantages, such as high reaction efficiency, a simple preparation process, and environmentally friendly characteristics. …”
Get full text

PERFORMANCE INVESTIGATION FOR NANOCARBON MODIFIED DISPENSER CATHODE by T. M. Krachkovskaya, A. V. Storublev, G. V. Sakhadji, A. N. Emelyanov

“…The article provides  characteristics of dispenser cathodes with admixture of nanocarbon particles,  i.e. sulfoadduct of carbon  nanoclusters (Ugleron®), into active material and polyhedral multilayer carbon  nanostructures of the fulleroid  type  and  toroidal  shape  (Astralenes®)  into  tungsten matrix.  …”
Get full text

THE INTENSITY OF SCATTERING OF CHARGE CARRIERS IN GRAPHENE, LOCATED ON A SUBSTRATE OF HEXAGONAL BORON NITRIDE by V. V. Muraviev, V. N. Mishchenko

“…Graphene is considered a promising material for the formation of new semiconductor devices with good characteristics for the microwave and HF bands. …”
Get full text

Synthesis and Antiviral Activity of Nanowire Polymers Activated with Ag, Zn, and Cu Nanoclusters by Thomas Thomberg, Hanna Bulgarin, Andres Lust, Jaak Nerut, Tavo Romann, Enn Lust

“…<b>Methods:</b> A comprehensive characterization of materials, including X-ray diffraction, scanning electron microscopy, microwave plasma atomic emission spectroscopy, thermogravimetric analysis, contact angle measurements, nitrogen sorption analysis, mercury intrusion porosimetry, filtration efficiency, and virucidal tests, was used to understand the interdependence of the materials’ physical characteristics and biological effects, as well as to determine their suitability for application as antiviral materials in air filtration systems. …”
Get full text