Materials Literature
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We report a Si K-edge X-ray absorption fine structures (XAFS) study of silicon monoxide (SiO), the starting material for silicon nanowire preparation, its silicon nanowires, and the residue after the preparation of the starting material. The silicon nanowires were condensed onto three different substrates, (i) the wal…
We investigated the carrier transport phenomena in model liquid crystalline systems, which were constructed on the basis of the Gay-Berne potential and Monte Carlo calculation. The carrier transport was analyzed under the condition that the molecular arrangement in the system was fixed and thermally activated carriers…
A novel eco-friendly titanium tanning system based on lactate-masked titanium sulfate solution as the tanning agent was developed. This approach offers enhanced tanning power, compared to previous system. The factors affecting this type of titanium tanning were investigated. The results showed that a conventional pick…
Abstract The phase behavior and rheological behavior of low molar mass liquid crystal (LLC) and polycarbonate blends is firstly reported. The results of small angle light scattering (SALS) indicate that the LLC is miscible in the mixture for weight fractions of LLC less than 6%. Mixtures of two different liquid crysta…
The refractive index and the temperature coefficient of the optical path length change of tellurite (80TeO2:20Li2O) and chalcogenide glasses (72.5Ga2S3:27.5La2O3) were determined as a function of temperature (up to 150°C) and wavelength (in the range between 454 and 632.8nm). The tellurite glass exhibits the usual ref…
The pressure dependence of the molar volume was at constant temperatures close to the melting point in benzene. The molar volume of benzene was calculated using experimental data for the thermal expansivity for constant temperatures of 25°C, 28.5°C, 40°C, and 51°C at various pressures for both the solid and liquid pha…
Delocalized transport in a batch of amorphous carbon thin films is shown via a positive slope of the reduced activation energy below a certain temperature and a large value of conductivity minima. A crossover of dimensionality from three-dimensional (3D) to two-dimensional (2D) weak localization below the transition t…
The microcracking susceptibility in dissimilar multipass welds of alloy 690 to type 316L stainless steel was investigated by the Varestraint test and the multipass welding test using the four different stainless steels varying the amounts of impurity elements such as P and S, and using the nine different filler metals…
In the context of collision-induced dissociation in chemistry and kinematics in physics, we have determined that a beam of hyperthermal protons can be used as tiny hammers to preferentially break the C-H bonds of hydrocarbon precursor molecules adsorbed on a conductive substrate with little damage to other chemical bo…
Today, one of the most important challenges for electrical motors is increasing the efficiency to obtain more power with the same electrical energy consumed. The use of iron-nickel and iron-cobalt alloys can significantly reduce the magnetic losses, and then increase the efficiency. At the same time, electrical motors…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTLinear Low-Density Polyoxymethylene versus Linear Low-Density PolyethyleneAndrea D. Ilg, Craig J. Price, and Stephen A. MillerView Author Information Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255 C…
A new pretreatment method for the gas chromatographic determination of poly(3‐hydroxybutyrate) (PHB) was developed based on a combination of alkaline hydrolysis and acid esterification. The determination principle is as follows: PHB is hydrolyzed to its monomer 3‐hydroxybutyrate by alkaline solution, followed by the e…
A donor-σ-acceptor compound incorporating tetrathiafulvalene and tetraphenylporphyrin units was synthesized. The structures of the target compound and its intermediates have been characterized by 1 H NMR, ESI MS, UV-vis, IR and mp. The results of UV-vis and cyclic voltammetry of the compound indicated negligible intra…
Electrochemical noise (EN) data is commonly used to monitor corrosion of metals in various environments. In this work we use recurrence quantification analysis (RQA) to study EN time series of stainless steel AISI 316 samples immersed in a mildly corrosive electrolyte. It is found that RQA of current and potential tim…
The concept of using cellulose as a smart material for preparing electro-active paper (EAPap) has been a land mark discovery, since it exhibits an impressive magnitude of actuation at relatively modest voltages. Considering the small thickness of cellulose samples (35 mum) and smaller depth of electrodes (100 nm), eve…
The influence on the optical properties of cholesteric liquid crystal displays (LCDs) was examined for neutral molecule binding by mesogen/receptors in the mesomorphic phase. The motivation was to prepare neutral molecule sensors that use a colour change to signal analyte binding. A receptor that binds barbiturate ana…
The effect of exchange cations (Mn+: Li+, Na+, K+, NH 4 + , Ca2+, Mg2+, Fe3+, and Al3+) and thermal treatment on the physicochemical properties of smectite was investigated. Before thermal treatment, unheated (25°C) Mn+-smectite showed increased d 001 spacing upon glycol solvation; after heating at 300°C or above (400…
Abstract Gold nanoplates mixed with spherical nanoparticles were prepared in lecithin lamellar liquid crystals containing non‐ionic surfactants as reductant. The effects of the concentrations of surfactants, reactants and salt on the formation of the nano‐products are discussed. The selective adsorption of lecithin he…
Single crystals of K 1- x Li x TaO 3 (KLT) with different Li concentrations are grown by the self-flux method. Li concentrations in the crystals are determined by second-harmonic-generation microscope observations. Complex dielectric constants of KLT are measured in the temperature range from 20 K to room temperature…
A comprehensive investigation of the electro- and thermophysical properties of the manganite La0.8Ag0.15MnO3 is carried out over a wide temperature interval (4.2–350K) and in magnetic fields up to 26kOe. It is shown that the colossal magnetoresistance in a magnetic field of 11kOe amounts to 57%, and the effect is maxi…