Materials Literature
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In this report first we show, in a framework of the Ising-like model, a numerical simulation of a typical two step thermal transition obtained for a square lattice 12x12: a "first-step hysteresis" for a high spin fraction Nhs between 0 - 0,5 and at a higher temperature a "second-step hysteresis" with Nhs between 0.5 a…
Optical limiting (OL) in an aqueous suspension of nanodiamonds (NDs) with an average nanoparticle size of 20 nm is studied and the results are presented. NDs are obtained by grinding the micron-sized diamond powders manufactured by static high-pressure, hightemperature (HPHT) synthesis. The experiments are performed b…
A lot of attempts were given to improve efficiency of lead halide perovskites solar cells in last several years by chemically active plasmonic nanoparticles implementation, but there is no data about stability in time. To solve both problem we added low-loss and chemically inert resonant silicon nanoparticles between…
In this work the calculations of new hybrid sp 2 +sp 3 carbon phases using density-functional theory in generalized gradient approximation were performed. The structure of phases was formed from C 20 and C 24 fullerites during their polymerization. As a result of calculations, it was found two new stable hybrid carbon…
Abstract In this contribution the mesoscopic material behavior of columnar grained Inconel 718 is modeled with a gradient enhanced crystal plasticity formulation and simulated by means of Finite Elements. A Voronoi tessellation based method is used to model the grain structure. On the mesoscale, the thermo‐mechanical…
The electronic state and local surrounding of both iron ions and tin dopant ions in Lu 1 – x Ca x Fe 0.997 Sn 0.003 O 3 ( x = 0.003; 0.1; 0.2) compounds were studied by 57 Fe and 119 Sn Mössbauer spectroscopy. The analysis of 57 Fe spectra showed that in the Lu 0.8 Ca 0.2 Fe 0.997 Sn 0.003 O 3 sample, obtained by air…
Abstract We establish pattern formation for a family of discrete and continuous functionals consisting of a perimeter term and a nonlocal term. In particular, we show that for both the continuous and discrete functionals the global minimizers are exact periodic stripes. One striking feature is that the minimizers are…
The universal behavior of thermal conductivity at low temperatures is usually taken as the signature of gap nodes in superconductors. Here we show that in near-nodal superconductors the thermal conductivity obeys a two-parameter scaling law, and can develop super-universal behavior if the temperature is about half the…
Abstract Additive manufacturing, also known as 3D printing, has become a well‐established method in many different fields of fabrication. It is a preferred method to produce small series or even individual parts of components. The present work aims at the experimental identification of the hyper‐ and viscoelastic prop…
Abstract A crystallochemical analysis of synthetic layered lithium-containing silicates has been performed. It is shown that these compounds have unique properties and structural characteristics. According to the X-ray diffraction data, the initial material possess a layered structure. After filling the material with…
Comparative simulation of linear polarized light focusing by dielectric microcylinders with a metallic coating by finite element method implemented in COMSOL Multiphysics is presented. The analysis of simulation results shows that using two metal shells from silver and gold can decrease the spatial parameters of the f…
Chemical wet treatment of ZnO films using the diluted sulfuric acid for dye-sensitized solar cell application was performed. The ZnO films were prepared from commercial ZnO nanoparticles using screen printing method and annealed. The films were treated by dipping into diluted sulfuric acid for different treatment time…
The subject of the research was a undercarriage leg of a gyroplane made of composite materials. The aim of the work was to assess the level of damage initiation of the composite gyroplane undercarriage. In the study, a structural capacity analysis was carried out, taking into account the phenomenon of damage initiatio…
Tissue engineering is one of the most essential research field for regenerative medicine. This is because bioengineered tissue transplantation minimizes cell loss in contrast to cell injection. Moreover, it has the potential to repair critical tissue defects. The rational is building a scaffold-based tissue engineerin…
Photodetectors exploiting hot electrons have the potential to achieve ultrahigh sensitivity and provide a broadband detection capability. The work by Changlong Liu, Lin Wang, Xiaoshuang Chen and co-workers (article number 1800836) features a novel high-gain photodetection mechanism aimed at the long-wavelength photon…
Paper is focused on the area of the energy devices working under the higher temperatures and pressures. It deals with repair of new and operational-loaded components of steam and gas turbines (valve and turbine chamber, transmitters, vane carriers, flap-lockable valve bodies and so on). Generally, there occur differen…
This paper deals with non destructive evaluation of components after plasma nitridation via Barkhausen noise techniques. The effect of the different surface state before plasma nitriding is studied via non destructive Barkhausen noise technique as well as the conventional destructive techniques. Turning operation was…
Local magnetization of chalcogenide superlattices (SL) of [(GeTe)2 (Sb2Te3)]n (n=4 and 8) was performed using a magnetic force microscopy (MFM) at room temperature. We show that stripe patterns appeared in MFM phase images after magnetizing of the SL by holding the MFM probe at a short distance to the SL surface at ro…
In this paper, we are interested in simulations and modeling of ZnGeN2/GaN quantum wells solar cell, like all other solar cells as we know always are sensitive to the temperature, many effects like number of quantum wells (NQWs), temperature (T) on photovoltaic properties such as current density-voltage I(V), power de…
We present a wafer scale, laser controlled fabrication method for making large-area, plasmonic dimeron-pillar configuration, using stimulated dewetting of thin silver film on MoS2covered gold disc. The dewetting of 3-nmthick silver film forms preferential silver islands only on the exposed area of the samples. An enha…