Materials Literature
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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…
Ultra-high frequency(UHF) electromagnetic wave can be radiated by partial discharge(PD) in gas insulated switchgear(GIS).UHF method is used for evaluating the insulation condition of GIS by analyzing the partial discharge signals information which is detected by UHF sensors.As the most of noises are under 300MHz,UHF m…
1.50–1.66 and 1.74, respectively. Temperature had no definite effect on OTR and CO2TR of MPP. Mean OTR and CO2TR for MPP were 10,848 and 9,554 mL m-2 d-1, respectively. The average perforation diameter (D mp ) and density (d mp ) was 41.0 µm and 125 perforations per m2, respectively, for a 20 cm x 28 cm bag. Compariso…
With the rising cost of zinc reaching historic levels, more emphasis is being placed on technologies to increase the efficient utilization of zinc. One area targeted for increased efficiency is in-house recycling of metallic zinc industrial wastes. Metallic zinc is utilized in a variety of applications including die c…
Epiclon, as an aliphatic dianhydride and three different aromatic diamines, 1,4-benzenediamine, 4,4'-methylenedianiline 4,4'-oxydianiline, were selected to prepare soluble polyimides, through thermal ring closure of polyamic acids obtained by solution polycondensation in N-methylpyrrolidone. The structures of these po…
This paper reports the data of an investigation of the gold nanoparticles assembly mediated by organic molecules, such as lysine. Gold nanoparticles were synthesized in citrate aqueous solution and characterized by UV-Vis spectroscopy and a strong absorption band at 528 nm is found for surface plasmon resonance. Trans…
Electrical conductivity of a series of Ln9.33+x/3Si6-xMxO26 (Ln=La, Nd and Sm, M=Al and Ga) sinters was examined. The pre-exponential factor and activation energy of the ionic conduction were well related by Meyer-Neldel rule, i.e., G=G00 exp (ΔE/kT0) exp (-ΔE/kT). Most of the sinters were composed with an apatite-lik…
Hexagonal ZnS thin films of thicknesses ranging between 454 to 750 nm are deposited on a glass substrate by chemical bath deposition at 80 oC. The ZnS thin films are characterized by X-ray diffraction (XRD) and optical absorption spectroscopy. The films are shown to be crystallized in the hexagonal phase and present a…
Picker and stripper harvest systems were compared for harvesting irrigated cotton on the High Plains. Stoneville 4554 B2RF was harvested using a picker harvester and a stripper harvester with and without field cleaning. The effect of harvest treatment on foreign matter, fiber quality, and yarn quality were compared. P…
Abstract Acylation of different amino derivatives (ethanol amine, diethanol amine, N -aminoethylpiperazine) was carried out under green conditions with oleic acid or tail oil fatty acids. The experiments were carried out using as heterogeneous catalysts mesoporous Al-Meso and UL-ZSM-5 with Si/Al ratios between 100 and…
High-temperature proton conductors are oxides in which low-valence cations are doped as electron acceptors; the incorporation of water molecules into the oxides results in the formation of protonic defects that act as charge carriers. Since the protons thus formed are in equilibrium with other electronic defects, elec…
The syntheses, characterizations and structural determinations of N,N′-bis(thiophenyl-2-methylene)hydrazine 1, N,N′-bis(4-bromothiophenyl-2-methylene)hydrazine 2 and N,N′-bis(5-bromothiophenyl-2-methylene)hydrazine 3 are presented. The materials show third-order nonlinear behaviour with transmissions of 20, 22 and 18…