Materials Literature
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Taking into account the high requirements of new structural materials the development of high-strength and high-temperature alloys based on titanium is a subject of great scientific interest. Carbon has usually been regarded as an impurity of titanium alloys. Increasingly however, it begins to play an important role a…
Deuterium thermal desorption spectra were investigated on the samples of austenitic steel 18Cr10NiTi pre-implanted at 295 K with deuterium ions in the dose range from 8 10 14 to 2.7 10 18 D/cm 2 . The kinetics of structural transformation development in the steel layer was traced from deuterium thermodesorption spectr…
In this study, a methodology for obtaining a conductive cassava starch biofilm doped with lithium perchlorate (LiClO 4 ) is shown, as well as the electrochemical technique for the synthesis of polypyrrole films, which are used for developing the trilayer artificial muscle PPy/Biopolymer/PPy designed to operate in air.…
X-ray reflectometry and spectroscopic ellipsometry methods were applied for determination of physical properties of gold nonolayers. The nanolayers were prepared by sputtering of gold on different substrates: borosilicate glass, polished crystalline quartz and crystalline silicon. With X-ray reflectometry technique ro…
It is shown that a racemic array of helical-shaped metallic wires may have a dual electromagnetic response, such that for arbitrarily large wavelengths it concurrently supports two modes with hyperbolic- and elliptical-type dispersions. Importantly, one of the eigenwaves is nearly dispersionless and sees the metamater…
Improving the magnetoelectric performance of Metglas/PZT laminates by annealing in a magnetic field E Freeman, J Harper, N Goel et al. - Review of multi-layered magnetoelectric composite materials and devices applications Zhaoqiang Chu, MohammadJavad PourhosseiniAsl and Shuxiang
Abstract The efficient depolymerization of polyethers, such as poly(ethylene glycol) (PEG), poly(propylene glycol) (PPG), and poly(tetramethylene glycol) (PTMG), with acyl chlorides using the proton‐exchanged montmorillonite (H‐mont) as a heterogeneous acid catalyst is demonstrated. The present catalytic system succes…
Hydrogen storage and microstructure the TiCrV 0.9 , TiCrV 0.9 Zr 0.2 and TiCrV 0.7 Zr 0.4 alloys were investigated. The alloys were melted in arc furnace, the structure was analysed by X- ray diffraction and hydrogen absorption times were analysed by Sievert's type apparatus. The results showed that the addition of Zr…
The impacts of strain and polar discontinuities on the performance of superlattices have attracted widespread attention. Using first-principles calculation, we study the polarization and piezoelectricity of PbTiO 3 /KTaO 3 (PTO/KTO) superlattices with strain and polar discontinuities. The strain caused by lattice mism…
A-site ordered perovskite CaCu3Cu2Ir2O12−δ with square-planar and octahedral coordinated Cu ions* , Zhao, Qing, Yin, Yun-Yu, Dai, Jian-Hong, Shen, Xi, Hu, Zhi-Wei, Yang, Jun-Ye, Wang, Qing-Tao, Yu, Ri-Cheng, Li, Xiao-Dong, Long, You-Wen
We have calculated the electronic structure of Ga1–x Mn x As and In1–x Mn x Sb diluted magnetic semiconductors and shown that, in agreement with recent photoelectron spectroscopy data, the Mn 4s and Mn 3d orbitals are hybridized with the valence band of the host semiconductor. A new approach has been developed for cal…
Modern economy has a strong demand for higher speed of construction and lower construction costs both achieved by using new efficient materials. Significant climate influence on the construction technology urges to make extensive investigations on hardening the construction composite (concrete and mortar) mixtures und…
The electron transport mechanisms through nanocomposite SiO2(Si) films containing Si nanoclusters into dielectric SiO2 matrix have been investigated. SiO2(Si) films were obtained by oxide assisted growth. At the first stage the SiOx films with different content of excess Si were deposited by LP CVD method. Second stag…
Electron microscopy is an important investigation and analytical method for the morphological characterization of various cellulosic materials, such as micro-crystalline cellulose (MCC), microfibrillated cellulose (MFC), nanofibrillated cellulose (NFC), and cellulose nanocrystals (CNC). However, more accurate morpholo…
The paper shows the transformation of the structure and phase composition of the layered coating system Al-Cr-Ni, obtained by the heat treatment of multilayered composite H20N80+AD1, welded by explosion, in the time range 1-300 hours. The cyclic heat resistance of the coating at 1150 ° C is studied.
The initial stages of growth of ferroelectric films of barium strontium titanate BaSrTiO 3 on singlecrystal sapphire substrates have been experimentally investigated as a function of the deposition temperature. It has been shown that, at the initial stage of the condensation of the BaSrTiO 3 film on sapphire, the temp…
A metamaterial magneto inductive lens is presented for the coil design in magnetic resonance imaging (MRI) applications, which is expected to enhance the magnetic field intensity of surface coils for improvement of the signal to noise ratio (SNR) of the MRI systems. The split-ring based lens is constructed into a pair…
The design and characterization of a novel toroidal split-ring resonator (SRR) are described in detail. In conventional cylindrical SRRs, there is a large magnetic flux within the bore of the resonator. However, there also exists a non-negligible magnetic flux in the free space surrounding the resonator. The energy lo…
(Pr1−yMy)1−xCaxCoO3 epitaxial films (M=Y, Gd) have been successfully fabricated by pulsed laser deposition on the single crystal substrates with different lattice constant. The polycrystalline bulk of this material shows a first-order metal-insulator (MI) transition below the critical temperature. Although ρ(T) of all…
The close-form expressions of the Young's moduli and the fracture stresses of cyclicgraphene, graphyne and supergraphene along their armchair and zigzag directions are derived based on a molecular mechanics model. Checking against present finite-element calculations of their Young's moduli shows that the explicit solu…