Materials Literature
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The electrochemical corrosion behavior of mild steel in 0.5M H2SO4 solution in the presence of apple, Malus domestica (MD); bonduc, Caesalpinia bonducella (CB) leaf extracts were investigated using potentiodynamic polarization curves measurements, electrochemical impedance spectroscopy techniques and Fourier infrared…
It was found that cadmium telluride (CdTe) quantum dots (QDs) with different sizes can have a great sensitizing effect on chemiluminescence (CL) emission from luminol-potassium periodate (KIO4) system. Levodopa, a widely prescribed drug in the treatment of Parkinson's disease, could inhibit luminol-KIO4-CdTe QDs CL re…
Ceramic materials present interesting properties and generate products that meet engineering requirements referring to this class for several applications. Aluminum oxide is a very good example of this class of materials, being applied widely in high technology areas especially where the abrasive and erosive wear are…
SrTi 1− x Mn x O 3 ( x = 0, 0.05, 0.10, and 0.15) ceramics can be prepared by sintering SrTi 1− x Mn x O 3 nanopowders, synthesized by a hydrothermal method, at 1,200 °C in air for 3 h. X-ray diffraction (XRD) results for all nanopowders and unannealed ceramics indicate a cubic-perovskite structure with an impurity ph…
Photoelectric hot carrier generation in metal-semiconductor junctions can enable optical-to-electrical energy conversion at photon energies below the bandgap of the semiconductor. Here, we present the simulated and experimental results of our wafer-scale Au/TiO2metallic-semiconductor photonic crystal (MSPhC). We demon…
We report on a new modular setup on a silicon-based microreactor designed for correlative spectroscopic, scattering, and analytic on-line gas investigations for in situ studies of heterogeneous catalysts. The silicon microreactor allows a combination of synchrotron radiation based techniques (e.g., X-ray diffraction a…
Periodically structured electrodes are typically introduced to thin-film photovoltaics for the purpose of light management. Highly effective light-trapping and optimal in-coupling of light is crucial to enhance the overall device performance in such thin-film systems. Here, wavelength-scale structures are transferred…
Effect of different fillers on natural rubber compounds was investigated through curing, mechanical properties and morphology studies for improving mechanical performance of rubber articles. In this work, natural rubber blends with Silica as Single-filler compounds, and blends with Silica and Carbon black as Bi-filler…
The porous epoxy resin matrix composites filled with iron powder referenced in this work consist of both ferromagnetic base materials and porous materials, which have properties of electromagnetic shielding and impact energy absorbing. Aimed at the dynamic compressive properties of the composites at different high str…
Polycrystalline KBi(MoO4)2 has been grown from molten system K-Bi-Mo-O. Solid solutions KBi1-xEux(MoO4)2 (x = 0.001 - 0.100) have been prepared by solid state synthesis and characterized by powder IR spectroscopy, DTA analysis, X-Ray powder diffraction and luminescence spectroscopy. It was found that all investigated…
Abstract Reactions of laser‐ablated U atoms with HCN produce HUNC, which is identified from its argon matrix infrared spectrum of strong N–C and U–H stretching modes at 2028 and 1417 cm–1. B3LYP calculations show that the unobserved HUCN isomer has a 6.3 kcal/mol higher energy, and its C–N stretching mode is about 125…
The structural and thermodynamic properties of Zr2AlC at high pressure and high temperature are investigated by first principles density functional theory method. The calculated lattice parameters of Zr2AlC are in good agreement with the available theoretical data. The pressure dependences of the elastic constants, bu…
The results of studying the optical properties of nanoscale single crystals of MoS 2 :Cl 2 and WS 2 :Br 2 semiconductor compounds are presented. In microscopic images obtained at the wavelength of the second (400 nm), edge effects are detected, which consist in enhancement or reduction in the second-harmonic signal in…
Long-term research results on the structural condition of heat-resistant coatings based on iron, nickel and cobalt aluminides applied to gas turbine blades by diffusion methods or spraying, as well as on their degradation and damageability under operational conditions, are presented. Peculiarities of the formation of…
We demonstrate an electrochromic device (ECD) with high optical density and fast response time. The fabricated ECD shows an optical density of 1.7 at 600 nm and the fastest response time of 1.4 sec. The ECD with a transparent OLED panel exhibits a transmittance of 62.9 % at 550 nm. The transmittance of transparent OLE…
In the recent years, displays for mobile electronic devices have been revolutionized, mostly driven by smartphones and tablets. Strongest trends are (besides growing sizes) the ever‐increasing resolution, improved contrast, very good viewing angle and color performance. This went hand in hand with a trend to more “ref…
In this work, a detailed field emission study of multi-walled carbon nanotubes (MWCNTs) grown on Si and Al coated Si substrates is reported. Morphological and microstructural studies of the films show higher entanglement of CNTs in the case of CNT/Si film as compared to CNT/Al/Si film. Raman studies show that the defe…
Anticipating a push towards circuit applications of field-effect transistors (FETs) with two-dimensional (2D) semiconductors like MoS2, there is a growing need to evaluate such devices at a circuit level. However, early 2D FET models have been either too idealistic or did not address circuit simulation. Here we descri…
Silicene is the silicon counterpart of graphene, that is, it consists of a single layer of Si atoms arranged in a hexagonal network. This new two-dimensional material, first predicted by theory, has been recently grown on different metallic surfaces.1, 2, 3 An obvious advantage of silicene (over graphene) for nanoelec…
The micro-galvanic corrosion of SiC reinforced 6061 Al alloys deprives its potential application in the acidic conditions or at high temperatures. Therefore, the corrosion behavior of 6061 Al—15 vol. pct. SiC (p) composite in HCl medium at different temperatures was studied using electrochemical impedance measurements…