Materials Literature
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SnO2 is an attractive anode material for lithium-ion batteries (LIBs) due to its high theoretical specific capacity (1491 mAh g(-1)), low cost, and environmental benignity. The main challenges for SnO2 anodes are their low intrinsic conductivity and poor cycling stability associated with their large volume changes dur…
Nonradiative recombination is one of the key electronic processes in semiconductor devices. In this study, we demonstrate that nonradiative recombination rate of intermolecular charge-transfer (CT) exciton at organic heterojunction increases exponentially with decreasing energy difference between the LUMO of acceptor…
Nanopatterned CuInGaS2 (CIGS) thin films synthesized by a sol‐gel‐based solution method and a nanoimprint lithography technique to achieve simultaneous photonic and electrical enhancements in thin film solar cell applications are demonstrated. The interdigitated CIGS nanopatterns in adjacent CdS layer form an ordered…
ABSTRACT Thermoplastic polyurethane (TPU)‐electrospun‐fiber‐mat‐supported gold catalysts were prepared by the adsorption of gold nanoparticles (AuNPs) onto a TPU electrospun fiber mat after functionalization with chitosan (CS) by a dip‐coating method. The mechanism for the adsorption of AuNPs was electrostatic interac…
The energy difference between the oxide and bulk peaks in X-ray photoelectron spectroscopy (XPS) spectra was investigated for both GeO2/Ge and SiO2/Si structures with thickness-controlled water films. This was achieved by obtaining XPS spectra at various values of relative humidity (RH) of up to ∼15%. The increase in…
Mixers are widely used in chemical and hydrometallurgical processes. For instance, one of the greatest challenges in the field of hydrometallurgy process is agitation made by impeller inside mixers. Solvent extraction is a process for separating components in solution by their distribution between two immiscible liqui…
У межах Больцманнової моделі розвинуто модель провідності ультратонких плівок металів у режимі квантового перенесення заряду. Флуктуації межі плівки металу радикально змінюють енергетичний спектр електронів у тонкій плівці металу та, відповідно, умови розсіювання носіїв струму в режимі квантового перенесення заряду. У…
Regular structures of equal spheres on the triply periodic minimal surfaces known as primitive (P), gyroid (G) and diamond (D) surfaces are enumerated as obtained through Monte Carlo simulations of hard spheres undergoing the Alder transition. Remarkably, there exist magic numbers producing the regular structures, whi…
Most hazardous, industrial waste from thermal coal-fired power plants has found utilization opportunities in different civil engineering applications by various treatment operations in recent years. Such initiatives provide improvements in economy, environmental protection, and health safety. One of the techniques use…
The single-bath electrochemical deposition of CuInSe2 often leads to short-circuit behavior of the resulting solar cells due to the high shunt conductance. In this study, in an attempt to resolve this problem, the influence of the Se precursor concentration (CSe) on electrodeposited CuInSe2 films and solar cell device…
The electrical behaviour of organic memory structures, based on single-walled carbon-nanotubes (SWCNTs), metal-insulator-semiconductor (MIS) and thin film transistor (TFT) structures, using poly(methyl methacrylate) (PMMA) as the gate dielectric, are reported. The drain and source electrodes were fabricated by evapora…
Newly developed thermally activated delayed fluorescence (TADF) materials are attractive for application in efficient displays. Five TADF materials, including PXZ-TRZ and four carbazolyl dicyanobenzene (CDCB) derivatives of 4CzTPN, 4CzTPN – Ph, 2CzPN, and 4CzIPN, were investigated using terahertz spectroscopy in the 0…
The efficacy of low temperature plasma generated by an atmospheric pressure plasma jet, J‐Plasma system (™Bovie Medical Corporation), is studied for its therapeutic effects against the DU145 prostate cancer cell line. The DU145 cells in complete culture media were treated with different exposure times and different J‐…
Hyperpolarization of NMR‐active nuclei is key to gather high quality spectra of rare species and insensitive isotopes. We have recently established that silica‐based materials containing regularly distributed nitroxyl radicals connected to the silica matrix by flexible linkers can serve as promising polarization matri…
Studies have shown that biochar amendment could increase soil nutrient availability and crop production, but the contributions of nutrients including nitrogen (N), phosphorus (P), and potassium (K) in the biochar to plant production need to be tested. A pot experiment was conducted to identify the effects of maize str…
Phytochemical investigation of the acetone extract from the roots of Aphanamixis polystachya resulted in isolation of four new tetranortriterpenes (1-4) in addition to one protolimonoid (methyl-1ξ,7R-diacetoxy-23R,25-dihydroxy-20S,24R-21,24-epoxy-3,4-seco-apotirucall-4(28),14(15)-diene-3-oate (5)), five known limonoid…
Structural, vibrational, and dynamical properties of the mono- and mixed-alkali silanides (MSiH 3, where M = K, Rb, Cs, K 0.5 Rb 0.5, K 0.5 Cs 0.5, and Rb 0.5 Cs 0.5 ) were investigated by various neutron experiments, including neutron powder diffraction (NPD), neutron vibrational spectroscopy (NVS), neutron-scatterin…
Rubrene endoperoxide p-xylene (1) has been obtained in crystalline form from recrystallization and purification of the organic semiconductor, rubrene, and for the first time characterized by single-crystal X-ray diffraction methods. 1 is produced by reaction of rubrene with molecular oxygen to create rubrene endoperox…
Nickel and manganese (Ni–Mn) co-doped with tin oxide (Sn(2–(x + y)) NixMnyO2) nanoparticles were synthesised by a sol-gel method. The influence of dopant concentration on prepared samples is investigated by different analytical techniques including X-ray diffraction (XRD), vibrating sample magnetometer, diffuse reflec…
The mechanical properties of a polyurethane-cement hybrid foam are investigated. The hybrid foam, based on the combined, synergic use of rigid polyurethane foam and portland cement, was introduced for application in the building field. Thermal and acoustic insulation properties, water vapor permeability, and the fire…