Materials Literature
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Alloying in the system Cu2ZnSnSe4–CuInSe2–ZnSe (CZTISe) is investigated experimentally and theoretically. The goal is to distinguish single-phase and multi-phase regions within the Cu2ZnSnSe4-2CuInSe2-4ZnSe pseudo-ternary phase diagram. CZTISe thin films are prepared by co-evaporation of the chemical elements and are…
Abstract SnO2nanoparticles were successfully synthesized using a 900 W microwave for 10, 20, and 30 min. Tetragonal SnO2nanoparticles composed of Sn and O were detected by X-ray diffraction (XRD), selected area electron diffraction (SEAD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) spectroscopy,…
Erica Stevens, Jakub Toman, Katarina Kimes, Volodymyr Chernenko, Anna Wojcik, Wojciech Maziarz, Markus Chmielus; Microstructural Evaluation of Magnetocalor
Capacitor banks are commonly connected to the power system to enhance its reliability by providing voltage support, improving power factor, and increasing the system capacity. They are usually switched in and out of the system according to the amount of connected load. This paper analyzes the measurement data of a dis…
The aim of this study is to show the applicability of artificial neural networks, which are getting more applications with the advancement of technology, to determine the mechanical properties of polymeric materials. Mechanical properties of pure polypropylene, polyethylene terephthalate and their blends are determine…
The lifetime of a transformer is driven by the lifetime of its solid insulation, namely cellulosic materials (impregnated with liquid). Indeed, this later cannot be easily replaced as the insulating liquid. The most important parameter to assess cellulose aging status in transformer is to measure its degree of polymer…
Summary The coaxial electrospinning process was used to produce core/shell strontium titanate/nickel oxide (SrTiO3‐NiO) nanofibers. First, poly (vinyl pyrrolidone) (PVP) was dissolved in deionized (DI) water, and then titanium (IV) isopropoxide [C12H28O4Ti] and strontium nitrate [Sr(NO3)2] were added into the solution…
The dielectric cylinder covered with graphene (DCCG) is found to be a promising platform for studying multi-qubit collective effects. The plasmons supported by DCCG have huge wave numbers and low loss. Under some conditions, the zeroth- and first-order modes even have the same wavelength. Qubits along DCCG can interac…
Photocatalytic reduction of CO2 over a Cu2Se–graphene nanocatalyst has been investigated. The nanocomposite material was successfully prepared via a modified hydrothermal method. The structure and properties of the prepared composite were characterized by X-ray diffraction, scanning electron microscopy with energy dis…
Microscaled 1,3,5-trinitroperhydro-1,3,5-triazine (RDX) is recrystallized by the spray flash evaporation technique to obtain nanoscaled RDX powder. Recrystallization is tracked by diverse methods, including atomic force microscopy and X-ray diffraction. Reduced sensitivity to friction and electrostatic discharge as a…
The hydrogenation of naphthalene, toluene, and 2-methylnaphthalene used as model compounds; the hydrodearomatization of the methylnaphthalene fraction; and the hydrocracking of oil sludge over Ni–W sulfide catalysts supported on BEA/TUD, BEA/SBA-15, and ZSM-5/SBA-15 composites containing SBA-15 and TUD mesoporous sili…
On page 5830, Z. G. Wu and co-workers develop a novel approach to make poly(dimethylsiloxane) (PDMS)-based elastomer soft, stretchable and sticky by introducing a small fraction of ethoxylated polyethylenimine (PEIE). Around the PEIE chains, the crosslinking of the elastomer is hindered and results in a gradient of cr…
Beta-voltaic cells based on standard silicon solar cells with bilateral coating with beta-radiation sources in the form of 63Ni isotope have been studied experimentally and by numerical simulation. The optimal parameters of the cell, including its thickness, the doping level of the substrate, the depth of the p–n junc…
A facile and versatile scheme is demonstrated to fabricate nanoscale resistive switching memory devices that exhibit reliable bipolar switching behavior. A solution process is used to synthesize the copper oxide layer into 250-nm via-holes that had been patterned in Si wafers. Direct bottom-up filling of copper oxide…
We report on the direct observation of Ag filament growth and a peculiar resistance switching in amorphous GeTe films with a lateral electrode geometry. The Ag filament growth was monitored by in-situ optical microscopy. The resistance switching was studied in three electrode pairs, Ag–Ag, Pt–Ag, and Pt–Ag/Pt (Ag elec…
Temperature modulated thermophysical measurements can deliver valuable insights into the phase transformation behavior of many different materials. While especially for non-metallic systems at low temperatures numerous powerful methods exist, no high-temperature device suitable for modulated measurements of bulk metal…
The study involved preparation of poly(acrylamide-co-itaconic acid) hydrogels by radical cross-linking copolymerization. The copolymer hydrogels were characterized through infrared spectroscopy, thermal analysis, swelling measurements and in oscillatory and steady shear rheology. Results showed that more stable copoly…
In this work, a comprehensive multi-resolution two-dimensional (2D) resistor network model is proposed to analyze the electrical conductivity of hybrid nanomaterials made of insulating matrix with conductive particles such as CNT reinforced nanocomposites and thick film resistors. Unlike existing approaches, our model…
Content Centric Networking (CCN) is one of the candidate future Internet architectures that give favorable promises in networks. In-network caching as one of its key functions, has been studied extensively to achieve less content access delay and to reduce traffic load. However, current caching schemes mostly suffer f…
The sensitivity of Lamb waves and SH-waves to changes in elastic properties has been studied in different parts of dispersion curves. We demonstrate methodological peculiarities of using these waves for assessing the anisotropy of sheet iron with regard to the selection of frequency range and wave mode and an allowanc…