Materials Literature
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Homologue series exhibiting the SmA* and SmC* phases have been studied and the tendency to de Vries behaviour has been described for compounds with decreasing length of non-chiral chain. Dielectric spectroscopy has been performed with the aim to characterize dielectric properties and compare different homologue compou…
Abstract Up to now materials were chosen to satisfy specific property(ies) in relation with the required application. Nowadays, a specific attention has to be devoted to the durability of this property regarding to the lifetime duration. It is the reason why, we paid attention about degradability. Thus, a screening of…
The selective reaction of CO oxidation (PROX) was named as the most attractive way to reduce the CO concentration, thereby purifying the hydrogen. The aim of this work is to make the structural and morphologic characterization of the NiFe2O4 spinel synthesized by combustion reaction, using glycine as fuel, and to eval…
Supercapacitors, a new energy storage element based on electrochemical double layer capacitance, store energy by ion adsorption, have recently attracted increasing interest with the sharp development of nanostructure materials. Supercapacitors store and release energy by nanoscopic charge separation at the interface b…
The analytical analysis of the possibilities of ultrasound application, together with ultraviolet radiation or oxidizers, has been carried out. The mechanisms of the efficiency increase have been examined at decontamination of sewage with big suspended particles. The application of additional sonication of potable wat…
We present a simple phenomenological model for the quantum capacitance of bilayer graphene. Quantum capacitance is calculated from the broadened density of states taking into account electron-hole puddles and possible finite lifetime of electronic states through a Gaussian broadening distribution. The obtained results…
Modeling the chemical erosion of carbon materials due to low-energy H+ impact is of paramount importance for the prediction of the behavior of carbon-based plasma-facing components in nuclear fusion devices. In this paper a simple general model describing both energy and temperature dependence of carbon-based chemical…
This study was performed to evaluate the efficiency of salt curing and soaking methods containing antibacterial agents. The bacteria adversely affecting hide quality because of hide preservation method and soaking process were examined in salt (n=40), salted hide (n=36), soaked hide (n=34) and soak liquor (n=19) sampl…
Several REZnPnO phases of the ZrCuSiAs type (RE = rare earth element, Pn = P, As, Sb) were synthesized in X-ray-pure form in NaCl/KCl salt fluxes. The structure of PrZnSbO was refined from single-crystal diffractometer data: P4/nmm, a = 418.79(8), c = 946.7(5) pm, wR2 = 0.0349, 192 F 2 values, 12 parameters. The REZnP…
The praseodymium orthoborate λ -PrBO 3 was synthesized from Pr 6 O 11 , B 2 O 3 , and PrF 3 under high-pressure / high-temperature conditions of 3 GPa and 800 °C in a Walker-type multianvil apparatus. The crystal structure was determined on the basis of single-crystal X-ray diffraction data, collected at room temperat…
Ru and RuO2 films were deposited from Torus, a blend of RuO4. At low hydrogen dose RuO2 films were deposited at 200ºC. With sufficient dosing of hydrogen, Ru films were obtained; either a high enough hydrogen pressure or plasma was used. Process temperatures between 100ºC and 250ºC were explored. At 100ºC the process…
Corona discharge in oil is one of a number of important defects that may exist in a power transformer. This paper investigates the corona in oil from a needle-plane geometry. Different aspect ratios of the geometry are investigated as well as the temperature dependence from 25 to 100 °C. The corona discharges are meas…
A new method for the preparation of silver nanoparticles (AgNPs) on silver chloride discs was developed to integrate the unique properties of plasmonic nanoparticles into infrared optical sensing technologies. AgNP layers exhibiting strong infrared surface enhancement were prepared by reacting silver chloride discs in…
The thermal expansion coefficients of kyanite at ambient pressure have been investigated by an X-ray powder diffraction technique with temperatures up to 1000 °C. No phase transition was observed in the experimental temperature range. Data for the unit-cell parameters and temperatures were fitted empirically resulting…
In this paper, a black box model has been proposed in order to analyze transformer transient behaviors. This model is capable to reveal the transformer impedance (or admittance) characteristics up to 1.2 MHz observed from transformer terminals under various connections. Also, this model is powerful to display the char…
In this work, we discuss heat- and photocurable silicone compounds that have different physical states in the cured condition ranging from the gel and elastomeric state (compounds, sealants, and adhesives of the SIEL brand) to the glassy state (compounds and adhesives of the STYK brand). The operating temperature rang…
Single-crystalline thin films of indium iron oxides with two-dimensional triangular lattice structures were successfully grown on ZnO(001) substrates using pulsed laser deposition. Thin films of ferrimagnetic InFe 2 O 4 with uniaxial magnetic anisotropy were found to grow in vacuum, while weak-ferromagnetic InFeO 3 th…
In this paper, 0.94Bi0.5Na0.5TiO3–0.06BaTiO3 (BNBT6) lead-free piezoelectric ceramics have been prepared using the gelcasting technology. The dielectric and piezoelectric properties of these ceramics have been investigated. The specimens were sintered at 1100–1200 °C after grain-oriented under the pulsed strong magnet…
The influence of rolling at a liquid-nitrogen temperature on the microstructure of commercially pure copper has been investigated by the methods of transmission electron microscopy (TEM) and automated analysis of electron backscatter diffraction (EBSD) patterns. It has been established that the process of the structur…
Features of functionalization of the surface of domestic commercial multiwalled carbon nanotubes by means of the thermal oxidation in air and treatment in nitric acid or a nitric-sulfuric acid mixture has been studied using the method of differential thermal analysis.