Materials Literature
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The problem of sensitization in austenitic stainless steels has received a lot of attention in research literature as it is a life-limiting process for such kinds of steels. Although a lot of experiments have been carried out by various researchers, there exist very few attempts to develop suitable predictive tools fo…
The simulative model of DPF (Diesel Particulate Filter) was based on FIRE to compare DPF performances with different inlet and outlet diameter proportions, different CPSI and different shapes of channels. And so to simulate deep-bed and soot cake filtration process under certain operation condition of engine, consider…
This article describes for the first time a novel method for the synthesis of silver nanocubes at room temperature in the presence of proteins with the evolution of unique colors.
We report the first synthesis and characterization of 4d transition metal palladium-doped GaN nanowires (NWs). Room temperature ferromagnetism has been observed in high quality Vapor Liquid Solid (VLS) epitaxy grown undoped n-type GaN nanowires. It was proposed that this type of magnetism is due to defects which are n…
A complementary organic thin film transistor (COTFT) structure is proposed, which would make it possible to realize high performance and highly fabricable organic integrated circuits. The structure is based on single organic semiconductor layer, with high electron carrier concentration region (n+) at the n-channel OTF…
The ternary semiconductor phase diagrams of M-Ga-Sb (M = In, Al) are calculated by means of the convex hull approach. The software package TernAPI is tested as an effective tool for these purposes. The new facilities and advantages of this package are proven. It enables one to construct ternary phase diagrams based on…
Polycrystalline Fe3-xPtxO4 films have been prepared by cosputtering at room-temperature. The composition, magnetization and Hall effect measurements indicate that Pt ions have been doped at B-sites. The resistivity is dominated by fluctuation-induced tunneling and decreases with increasing x. The absolute magnetoresis…
In this study a device based on a mixture of photosensitive organic semiconductors poly-N-epoxypropylcarbazole (PEPC) and Copper Phthalocyanine (CuPc) is investigated as a photocapacitive detector. We deposit thin films of the PEPC-CuPc from their solution in toluene or dioxane on a conductive glass (CG) to fabricate…
A new method has been proposed for synthesizing spinel ferrites, i.e., thermal hydrolysis, which makes it possible to obtain a single-phase product of high purity for a short time. A polycrystalline sample of the CoFe 2 O 4 composition has been prepared. The phase composition and morphology of the sample have been inv…
Hydroxylation of phenol with a 25% aqueous solution of hydrogen peroxide in polar protic and aprotic solvents on TS-1 heterogeneous catalyst under various conditions was studied. The major reaction products (hydroquinone, pyrocatechol) and their ratio were determined. A kinetic model describing the hydroxylation in ac…
The cobalt melt migration process, which takes place between mesoelements and the hard alloy matrix in the liquid-phase formation of the structure of a WC-Co mesocomposition, has been described. It has been found that the motive force of the process is the migration pressure gradient and that the volumes of mesoelemen…
The aim of this study was to prepare and evaluate the pellets, containing a highly soluble drug (ascorbic acid), by the extrusion-spheronization process and coated with a release controlling polymer. The coating (undertaken in a fluid bed) was applied to three batches of the pellets with a dispersion of Kollicoat® SR…
Magnetism of capped nanoparticles, NPs, of non-magnetic substances as Au and ZnO is briefly reviewed. The source of the magnetization is discussed on the light of recent X-ray magnetic circular dichroism experiments. As magnetic dichroism analysis has pointed out impurity atoms bonded to the surface act as donor or ac…
The aim of the present work is to use intrinsically conducting polymers (ICPs) to improve the corrosion resistance ability of the galvanic coupling of galvanized steel coupled with steel by coating it with polypyrrole (PPy). The potentiostatic technique was used for forming the PPy layer using a potentiostat (EG&G A-2…
The structure and properties of graphene, which is a two-dimensional layer of carbon atoms with a hexagonal crystal lattice, are considered. Graphene is a zero bandgap semiconductor with a nondissipative motion of Dirac electron-hole pairs, which provides a charge mobility of μ ∼ 10 5 cm 2 V −1 s −1 . Methods of their…
Two key parameters were analyzed in Si/SiO/Pt/Co/AlOx: the oxidation time of the Al layer resulting in AlOx, and the ex situ annealing temperatures varied in the 15 and 55 s and 20, 300, and 450 °C ranges, respectively. For intermediate annealing temperatures (∼300 °C), the quantitative analysis of specular reflectome…
The complexation of single walled carbon nanotubes (SWNTs) with neutral, anionic and cationic porphyrins has been investigated under identical complex forming conditions. The determination of the porphyrin loading reveals large differences depending on the nature of the porphyrin used. Combinations of different porphy…
The boundaries of effective application (and possible error sources) of synthesis of 3D pictures from several 2D frames (stereophotogrammetry) and an indirect analysis of 3D features from “flat” images (2D frames) and fractal dimension (from the measurement of a relief trajectory) performed to reveal the differences i…
Two novel aliphatic amine-containing dimethacrylate monomers were synthesized from the ringopening reaction of hexamethylene diamine and ethylenediamine with glycidyl methacrylate. The UV-curable and heat-curable formulations were prepared with amine-containing dimethacrylate and active diluents. The curing process wa…
The use of Ge nanostructures is investigated for the metal-catalyst-free growth of silica nanowires and carbon nanotubes (CNTs). Silica nanowires with diameters of 10–50 nm and lengths of ≤1 µm were grown from SiGe islands, Ge dots, and Ge nanoparticles. High-resolution transmission electron microscopy (HRTEM) and ene…