Materials Literature
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Abstract A reliable simple approach is introduced to predict the heats of decomposition of nitroaromatics through their molecular structures. It is based on the number on nitro groups attached to aromatic ring and some structural moieties that depend on intra‐ and intermolecular interactions. In contrast to other avai…
We have studied exchange processes in contact complexes of triplet eosin molecules with oxygen molecules in the triplet (3Σ − ) and singlet (1Δ g ) states in thin polyvinylbutyral films in the presence of gold nanoparticles. Upon resonant excitation of surface plasmons in gold nanoparticles into the absorption band of…
The energy diagram of RuO2/Al‐doped TiO2/RuO2 structures was estimated from the capacitance–voltage and leakage current density–voltage curves. The Al‐doping profile in TiO2 film was varied by changing position of the atomic layer deposition cycle of Al2O3 during the atomic layer deposition of 9 nm‐thick TiO2 film. Th…
We have studied the fluorescent properties of vinylogous series of merocyanine dyes based on 1,3-indandione and heterocycles of different electron-donating powers. Using a set of solvents with polarities lying in a wide range, we have analyzed the dependence of their solvatofluorochromism on the key structural paramet…
Aluminum alloys are used in automobile and aerospace industries because of their low density and good mechanical properties, better wear resistance as compared to conventional metals and their alloys. In these industries there is continues demand to develop light weight, inexpensive and strong material which has led t…
A new technique to determine the true projected contact area by nanoindentation is presented. It requires combining two models used normally to determine the representative stress and strain from nanoindentation parameters. Consequently, it does not require any model classically used to calculate the projected contact…
Abstract The difficulty in determining the electron paramagnetic resonance (EPR) line parameters of ferromagnetic semiconductors has been addressed. For these materials, the resonance line is very broad and lies at low resonance field, so that only a part of the line can be detected experimentally. Moreover, the line…
A hydrolysis process was applied to prepare the compact TiO 2 layer using the fresh metastable TiCl 4 isopropanol/water solution as the precursor solution for the preparation of the inorganic–organic hybrid heterojunction perovskite solar cells. The optimal compact TiO 2 layer prepared from the aqueous solution of 2 m…
The copper indium gallium diselenide Cu(In,Ga)Se2 (CIGS) thin-films deposited on soda lime silica glass substrates were dip-coated five times and annealed at 180oC. The advantages of CuIn(Ga)Se2 thin films were its wide compositional tolerance, high conversion efficiency, flexibility, low cost of materials and high op…
Several Buddleja species were the target of phytochemical and biological studies; however, nothing was reported concerning the chemistry of Buddleja polystachya Fresen. growing in Saudi Arabia. Sixteen constituents were isolated from the aerial parts of B. polystachya using various chromatographic techniques and were…
Naringenin (NAR), a natural flavonoid aglycone of naringin has been extensively investigated for its pharmacological activities, including anti-tumor effects. However, its poor bioavailability has been identified as the single most important challenge in oral drug delivery. Based in this condition, it is used nanoenca…
This review describes the data on methods of the lecithin organogel preparation, the regions of their existence, and phase equilibria in the lecithin/nonpolar organic solvent/water systems. The modern views on both the mechanism of the formation and the structure of lecithin organogels are discussed. The properties of…
The odd structure of the fractional filling hierarchy, which is referred to as the fractional quantum Hall effect, is studied in higher Landau levels using the commensurability condition. The hierarchy of fillings that are derived in this manner is consistent with the experimental observations in the first three Landa…
Until now not much attention was paid to behavior of insulating materials under different voltage stresses. For decades, the applied research was done generally under AC voltage. As power electronics was involved in drives and dominated instead of DC drives, new troubles with lifetime occurred. The great influence of…
The paper deals with experimental study of carbon steel plastic deformation laws at the stage of yield delay and yield plateau formation in uniaxial extension tests. The kinematics of formation and propagation of localized plastic flow bands of the material on the surface of solid cylindrical specimens of various leng…
Whereas buffers significantly impact Network-on-Chip (NoC) performance, they also account for up to 75% and nearly 50% of NoC router area and power respectively. Traditionally, SRAM has been used as an area and power efficient implementation of the router buffer. However, motivated by the smaller size and lower-power…
An approach using polychromatic x-ray Laue diffraction is described for studying pressure induced microstructural changes of materials under pressure. The advantages of this approach with respect to application of monochromatic x-ray diffraction and other techniques are discussed. Experiments to demonstrate the applic…
We report the electronic characterization of mesoscopic Hall bar devices fabricated from coupled InAs/GaSb quantum wells sandwiched between AlSb barriers, an emerging candidate for two-dimensional topological insulators. The electronic width of the etched structures was determined from the low field magneto-resistance…
The impact of orange peel coupling on spin current induced magnetization switching in a Co/Cu/Ni-Fe nanopillar device is investigated by solving the switching dynamics of magnetization of the free layer governed by the Landau-Lifshitz-Gilbert-Slonczewski (LLGS) equation. The value of the critical current required to i…
Helices are one of the most common and were among the earliest recognized secondary structure elements in proteins. The assignment of helices in a protein underlies the analysis of its structure and function. Though the mathematical expression for a helical curve is simple, no previous assignment programs have used a…