Materials Literature
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The synthesis of new zinc porphyrin oligomers linked by a triazole bridge was carried out via "click" reaction. A split in the porphyrin oligomer B-band was observed. It was considered as evidence of exciton-excitonic coupling. The relaxation of excited states in Q-band porphyrin oligomers was studied by the femtoseco…
The aim of the present article is the assessment of technical shear resistance (technological shear) of orthopedic screw made of titanium alloy Ti6Al4V, produced using incremental technology in the process of 3D printing process. The first part of the work presents incremental techniques in production engineering. The…
The liquid-liquid extraction of copper(II) ions from sulfate media with three Schiff bases extractants used were salicylidene-2-chloroaniline, sal-2-cla, salicylidene-3-chloroaniline, sal-3-cla, and salicylidene-4-chloroaniline, sal-4-cla, diluted in chloroform at 25°C are studied with the following parameters: pH and…
Based on the transfer matrix methodology, a new analysis is presented for the description of slopes of the ternary diffusion path for a solid–solid diffusion couple. Concentration profiles and diffusion paths for isothermal, ternary diffusion couples are examined in the context of eigenvalues and eigenvectors obtained…
We develop a theory for realizing frequency-independent, reflectionless, single-layer metafilms based on the Brewster effect. A designed metafilm based on the theory is numerically analyzed using a finite-difference time-domain method. The numerical analysis demonstrates that the reflectance of the metafilm vanishes i…
The catalyst-assisted nucleation and growth mechanisms for many kinds of nanowires and nanotubes are pretty well understood. At times, though, 1D nanostructures form without a catalyst and the argued growth modes have inconsistencies. One such example is the catalyst-free growth of aluminium borate nanowires. Here we…
Abstract Die Verbesserung der Zelladhäsion auf einer Biomaterialoberfläche ist entscheidend für den Langzeiterfolg eines Titanimplantats. Ein neues Konzept ist die Kombination aus sehr affiner und stabiler Adhäsion an Titanoberflächen mit spezifisch zellbindenden Motiven in einem Molekül. Ein l‐3,4‐Dihydroxyphenylalan…
We study how the thermodynamic properties of the triangular plaquette model (TPM) are influenced by the addition of extra interactions. The thermodynamics of the original TPM is trivial, while its dynamics is glassy, as usual in kinetically constrained models. As soon as we generalize the model to include additional i…
Cancer is a major malignancy which has claimed numerous lives worldwide. Despite huge resources being utilized to develop cancer therapeutics, no effective cure has been found so far. Hence there is a need to look at emerging technologies for a solution. Nanoparticle is one such technology that has become feasible and…
The impact of 60Co gamma-irradiation on n-channel AlGaN/GaN high-electron-mobility transistors was studied by means of temperature-dependent electron beam-induced current (EBIC) and cathodoluminescence (CL) techniques. For the doses up to ∼250 Gy, an enhancement of minority carrier transport was observed as evident fr…
Two samples of activated carbon fabrics (ACF) with very high surface area (>1300 to >1800 m2/g) were reacted with ozone inside a closed flask under static conditions. The kinetics of ozone decomposition and reaction with the ACF surface was measured in the gas phase using Fourier transform infrared analysis (FT-IR) sp…
The emergence of antibiotic-resistant Helicobacter pylori strains impacts the efficacy of eradication therapy and promotes the development of alternative treatment strategies. Apocynin inhibits neutrophil NADPH oxidase and hence may decrease reactive oxygen species-mediated tissue damage in H. pylori-infected stomach…
Abstarct We report a single step growth of thin graphene-like, densely packed FeV 3 O 8 (FVO) nanosheets on silicon substrates via facile hydrothermal synthesis. These nanosheets have dimensions of a few microns with thin edges, offering very high aspect ratio. These FVO nanosheets exhibit excellent field emission beh…
In Part I of this paper, the two-temperature homogenized model for the fully ceramic microencapsulated fuel, in which tristructural isotropic particles are randomly dispersed in a fine lattice stochastic structure, was discussed. In this model, the fuel-kernel and silicon carbide matrix temperatures are distinguished.…
Fluorinated microwave exfoliated graphite oxide (MEGO) samples containing 5.7–29.3 at.% of fluorine were prepared by gas phase treatment of MEGO with XeF2. According to X-ray photoelectron spectroscopy and infrared spectroscopy data, fluorination of MEGO occurs at C=C bonds while leaving the oxygenated domains intact,…
The dissolution of oxygen in palladium plays an important role in palladium catalysis. The present study shows that the surface modification (SM) due to the dissolution of atomic oxygen into the subsurfaces of palladium can be used as a control to tune its catalytic activity. CO oxidation and NO + H 2 + O 2 reaction w…
We study the competition between unconventional superconducting pairing and charge density wave (CDW) formation for the two-dimensional Edwards Hamiltonian at half filling, a very general two-dimensional transport model in which fermionic charge carriers couple to a correlated background medium. Using the projective r…
Within the framework of a semi-classical three-valley Monte Carlo electron transport simulation approach, we analyze the steady-state and transient aspects of the electron transport within bulk zinc-blende indium nitride, with a focus on the response to variations in the crystal temperature and the doping concentratio…
In many technological applications the mankind mimics the nature. One of the excellent examples is photosynthesis. The knowledge of the natural photosynthesis mechanisms is extremely useful in understanding of molecular processes occurring in photovoltaics.In this review article the photophysical fundamental aspects o…
The paper presents the results of tests on the spheroidising treatment of vanadium carbides VC done with magnesium master alloy and RE. The conducted metallographic studies have shown that introducing the magnesium master alloy to an Fe–C–V system of eutectic composition causes the crystallisation of spheroidal carbid…