Materials Literature
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Discharge characteristics in single-phase equipment are a well-known and well-established art, however, those in three-phase equipment are far less understood. Because the electric field in the insulating material of three-phase equipment is not linear, but rotates with power frequency, it can be expected that the dis…
Electrodeposition of Zn with V was tried in un-agitated or agitated sulfate solutions containing Zn2+ and VO2+ at pH 0-3 and 40°C under galvanostatic conditions. XPS spectra of deposits showed that V was involved in deposited Zn in form of V oxide by hydrolysis of V ions. The content of V in deposits increased with in…
We are concerned with the numerical study of a simple one-dimensional Schrdinger operator -1 2 xx + q(x) with R, q(x) = cos(x) + cos(kx), > 0 and k being irrational. This governs the quantum wave function of an independent electron within a crystalline lattice perturbed by some impurities whose dissemination induces l…
A novel pentanuclear mixed-valence manganese (II/III) complex [Mn5Na2O2(O2CMe)4(L′)4(DMF)4(H2O)]·3DMF (where H2L′ = 2-hydroxyphenyl-1,3,4-oxadiazole-2(3H)-thione) has been synthesized, structurally and magnetically characterized and presents a butterfly-type spin topology with competing antiferromagnetic interactions.
In the last few years the Fe-base oxide dispersion strengthened (ODS) PM 2000 alloy has been shown to be a biomaterial for its outstanding combination of mechanical properties and corrosion resistance. In this work, we are describing the effect of high temperature annealing at 1100°C (pre-oxidation) and low temperatur…
A new method of nanowire fabrication based on electroless deposition process is described. The method is novel compared to the current electroless procedure used in making nanowires as it involves growing nanowires from the bottom up. The length of the nanowires was controlled at will simply by adjusting the depositio…
An evaluation was made of the presence of paramagnetic ions in the host lattice of CuI2SO3.CdII SO3.2H2O by the electron paramagnetic resonance (EPR) technique, using copper(II) ions as paramagnetic probes. The existing M I and M II complexation sites in the double sufite structure were successfully differentiated. Th…
A three-dimensional computational fluid dynamics (CFD) model has been created to model high-temperature steam electrolysis in a planar solid oxide electrolysis cell (SOEC). The model represents a single cell, as it would exist in an electrolysis stack. Details of the model geometry are specific to a stack that was fab…
During weathering, wood-plastic composites (WPCs) can fade and lose stiffness and strength. Weathering variables that induce these changes include exposure to UV light and water. Each variable degrades WPCs independently, but can also act synergistically. Recent efforts have highlighted the need to understand how WPCs…
The microstructure and the magnetic and transport properties of La0.7Ca0.3MnO3 and La0.7Sr0.3MnO3 films deposited on a BaTiO3 layer (LCMO/BTO and LSMO/BTO) and on a LaAlO3(001) single crystal (LCMO/LAO and LSMO/LAO) by rf-magnetron sputtering using “soft” (or powder) targets are investigated. The films grown on BTO de…
Germanium TPV cells have been manufactured by MOVPE and have been included in a tungsten emitter‐based solar thermophotovoltaic system. This system uses concentrated power from the sun for heating a cylindrical‐shaped tungsten emitter. The radiation spectrum of tungsten is better matched to the Ge TPV cell spectral re…
New methods for critical dimension (CD) measurements may be needed to enable the detailed characterization of nanoscale structures produced in the semiconductor industry and for nanotechnology applications. In earlier work, small angle x‐ray scattering (SAXS) measurements with synchrotron sources have shown promise in…
Al-doped Zn 0.95 Mg 0.05 O films were deposited on glass and silicon substrates by a sol–gel spin coating and the coated samples were dried at 350 to 450 °C and annealed at 550, 650, and 750 °C. The effects of Al content and annealing temperature on the structural and optical properties of Al-doped Zn 0.95 Mg 0.05 O t…
Plastics Engineering is the official publication of the Society of Plastics Engineers (SPE). We provide plastics professionals with a wealth of information about machinery, technological advances, materials innovations, sustainability, and more.
Stain etching characteristics of p- and n-type silicon wafers in aqueous solutions were investigated using photoluminescence (PL), scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), and energy dispersive X-ray microanalysis (EDX). Yellow PL centered at wa…
In this work synthesis, sintering processes and properties of three groups of perovskite-type ceramics utilized in chosen electronic applications are briefly described. The first group includes high permittivity dielectrics based on relaxor ferroelectrics and new leadfree ceramics, destined for bulk and thick film cap…
Nanocrystalline alumina powders were synthesized by the combustion method using serine and asparagine as fuels. A screening design was conducted to determine how key process factors influence preparation of nanocrystalline powders. The screening design was utilized to rank effective factors on crystalline size of alum…
We demonstrate logic circuits with carbon nanotube field-effect transistors (CNTFETs). The p-type CNTFETs are fabricated based on single-walled carbon nanotubes and n-type CNTFETs are fabricated based on nitrogen-doped multiwalled carbon nanotubes. To be specitic, we demonstrate three types of logic circuits with CNTF…
Hemicelluloses constitute one of the most abundant renewable resources on earth. To increase their utilization, the isolation of hemicelluloses from industrial biomass side-streams would be beneficial. A method was investigated to isolate hemicelluloses from process water from a thermomechanical pulp mill. The method…
Eu 5 Sn 3 S 12 and Eu 4 LuSn 3 S 12 were synthesized and their structures refined from single crystal data (Pmc2 1 , Eu 5 Sn 3 S 12 : a = 3.908(1), b = 20.115(4), c = 11.451(2) Å ; wR2 = 0.0519 for 3048 F 2 and 122 parameters; Eu 4 LuSn 3 S 12 : a = 3.920(1), b = 20.132(4), c = 11.459(2) Å ; wR2 = 0.0737 for 3298 F 2…