Materials Literature
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Lead–tin–telluride is a well-known thermoelectric material in the temperature range 350–750 K. Here, this alloy doped with manganese (Pb0.96−yMn0.04SnyTe) was prepared for different amounts of tin. X-ray diffraction showed a decrease of the lattice constant with increasing tin content, which indicated solid solution f…
Due to discrepancy in the standard enthalpy of formation, , of copper(II) aluminate (CuAl2O4) reported in thermodynamic databases, the calculated reaction enthalpy, ΔHr, of CuAl2O4 with reducing gases varies considerably. In this work, the standard enthalpy of formation, , of CuAl2O4 is reassessed using the reaction e…
A 0.93Pb(Zn1/3Nb2/3)O3–0.07PbTiO3(PZN–PT) single crystal was grown using the flux Bridgman method and 〈0 0 1〉-oriented slides were obtained. Strip-shaped and needle-shaped domains were observed in the same PZN–PT sample by a polarizing microscope. Raman spectra and transmittance spectra of regions with different domai…
A method is proposed to calculate the formation of a point defect pair in Si based on an atomistic picture. As an illustration, the capturing of a vacancy (V) by another V forming a di‐vacancy is described semi‐quantitatively. It is shown that in Si, the number of most likely diffusion paths of two vacancies V to form…
The structural, electronic, and absorption properties of crystalline benzotrifuroxan (BTF) under hydrostatic compression of 0–150 GPa have been studied by using density functional theory with dispersion correction. The crystal structure of BTF was relaxed using three types of van der Waals corrections such as the PBE-…
In a WHF-08-type reactor, three kinds of semicokes (Hongce lignite semicokes, Shenmu bituminous coal semicokes, and Jincheng anthracite semicokes) were activated with ammonia at high temperatures and high pressures. Results showed that the catalytic activity of the semicokes was significantly enhanced after activation…
We report here on a first study using synchrotron radiation-based Fourier transform infrared microspectroscopy and imaging to investigate HT1080 human fibrosarcoma cells grown onto different-aged type I collagen networks. Spectral images were analyzed with k-means and fuzzy C-means (FCM) clustering algorithms. K-means…
A spectrum splitter can be used to spatially multiplex different solar cells that have high efficiency in mutually exclusive parts of the solar spectrum. We investigated the use of a surface-relief grating made of dielectric materials for specularly transmitting one part of the solar spectrum while the other part is t…
The shifting tolerance of the collinear holographic data storage system is discussed considering its influences on the quality of the reconstructed data pages and the precision of the holographic disk actuator. The diffractive efficiencies with shifting along the x-axis and the z-axis are calculated respectively based…
Molecular mechanics and dynamics simulations use distance based cutoff approximations for faster computation of pairwise van der Waals and electrostatic energy terms. These approximations traditionally use a precalculated and periodically updated list of interacting atom pairs, known as the "nonbonded neighborhood lis…
Efficient transparent light converters have received lately a growing interest from optical device industries (LEDs, PV, etc.). While organic luminescent dyes were tested in PV light-converting application, such restrictions as small Stokes shifts, short lifetimes, and relatively high costs must yet be overcome. Alter…
To develop an advanced ODS alloy for core structural materials for next-generation nuclear reactor system applications, effects of alloying elements such as Cr, Mo, Al, Zr and Y2O3 on microstructures and tensile properties of ODS ferritic/martensitic alloys were investigated. The ODS alloys were fabricated by mechanic…
The compatibilities and conductivities of K2NiF4 typed La2Ni0·9Fe0·1O4+δ (L2NF91) and LaNi0·6Fe0·4O3−δ (LNF64) perovskites, promising cathode materials for solid oxide fuel cell, with Gd0·1Ce0·9O1·95 (GDC) electrolyte were investigated. L2NF91 and LNF64 were synthesised using citrate and modified citrate methods with…
Crystal structures of five hexaethylguanidinium salts (PF6− 1, FeCl4− 2, CuCl42−·H2O 3, CoBr42−/Br−·H2O 4, bistriflimide 5) were determined. Short interionic contacts were identified. Cyclic voltammetry of 2 revealed an electrochemical window from +1.0 to −1.5 V with a single Fe(III)/Fe(II) redox event at −0.27 V on a…
Over the past decade, functionalization with bimetallic catalysts have been studied owing to their excellent catalytic activities for various reactions, whereas few studies have been performed on cofunctionalization with two different types of metal catalysts despite its simplicity. This study examined the sensing per…
Potassium is present in distinct forms in the soil. The K forms in the soil are characterized by reversible exchanges between compartments and they have different characteristics in regards to availability for plant uptake. The soil's capacity to supply or restrict K to plants is different for each soil and it determi…
The phenomenology for a particular behavior of packed beds in heavy liquid metal (HLM) fast reactors during postaccident heat removal is proposed. Because of the similar densities of the fuel and the HLM, an inherent passive safety self-removal feedback mechanism due to buoyancy forces is developed, which propels the…
An electrical response of a diffracting diamond (111) crystal was studied in a single electrode configuration where the electrode was deposited on a small portion of the crystal entrance surface. The experiment was performed in ambient air using an x-ray beam after a Si (111) double-crystal monochromator with the diam…
We analyze laser-induced periodic structure developing in a semiconductor under the condition of both optical bistability existence and external electric field presence. Optical bistability occurs because of nonlinear dependence of semiconductor absorption coefficient on charged particles concentration. This dependenc…
Numerical simulations of the primary phase of a hypothetical core disruptive accident are currently based on a multiple-channel approach, which requires that subassemblies or groups of subassemblies be represented together as independent channels. Generally, a single-pin treatment is used to model the channel fuel pin…