Materials Literature
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The nature of the magnetic states of zigzag graphene nanoribbons (ZGNRs) was explored on the basis of density functional calculations to understand why they are apparently nonmagnetic. Our study shows that the magnetic moments of ZGNRs are destroyed by p-type or n-type carrier doping with ∼1013 carriers/cm2 per ribbon…
We have fabricated high-performance ultraviolet (UV) detectors with high-quality undoped and B-doped homoepitaxial diamond layers which were sequentially grown on a high-pressure/high-temperature-synthesized (HPHT) type-Ib (100) substrate by means of a high-power microwave-plasma chemical vapor deposition method. The…
This study describes the development of a compact measurement technique for absolute carbon (C) atom density in processing plasmas, using vacuum ultraviolet absorption spectroscopy (VUVAS) employing a high-pressure CO2 microdischarge hollow-cathode lamp (C-MHCL) as the light source. The characteristics of the C-MHCL a…
The diamond growth rate enhancement factor A([N2],[CH4]) of nitrogen has been measured in situ by laser reflection interferometry using thin reflecting iridium interlayers on on-axis and off-axis single crystals. “A” shows a characteristic linear decrease with the methyl radical concentration in the gas phase. The res…
Dense/porous bilayered ceramics were fabricated by introducing an electric field into the freeze‐casting process. A unidirectional solidification was performed by placing an aqueous ceramic on refrigerating equipment, at a constant cooling rate of 6°C/min. When the bottom temperature of the slurry was reduced to 0°C,…
The inhibitive and adsorptive characteristics of ethanol extract of Gnetum Africana for the corrosion of mild steel in H2SO4 solutions have been studied using weight loss, gasometric, thermometric, and IR methods of monitoring corrosion. Ethanol extract of Gnetum Africana is a good adsorption inhibitor for the corrosi…
The relaxation of radiation-induced defects in the CuO polycrystal and nanoceramic with the particle size d = 15 nm irradiated by an electron dose of F = 5 × 10 18 cm −2 has been studied. In the irradiated samples, a strong susceptibility increase with decreasing temperature T < 150 K is observed. This increase is due…
J. Santoyo-Salazar*, M. A. Castellanos-Roman, B. Gomez-Looh, D. Ihiawakrim, C. Lefevre, G. Pourroy. 1 Institut de Physique et Chimie des Materiaux de Strasbourg, UMR CNRS-ULP-ECPM 7504, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 2, France. 2 Facultad de Quimica, Departamento de Quimica Analitica, Universidad Naci…
As part of the U. S. Department of Energy (DOE)-sponsored Next Generation Nuclear Project (NGNP) currently ongoing at Idaho National Laboratory (INL), the irradiation performance of candidate high-temperature gas reactor fuels and materials is being evaluated at INL's Advanced Test Reactor (ATR). The design of the fir…
The marine phytoplankton diatom Thalassiosira species are described from the Korean coastal waters, based on observations of fine structure of its frustules. As a fourth series, this study deals with 5 Thalassiosira species (T. decipiens, T. eccentrica, T. mala, T. nodulolineata, and T. proschkinae). The most striking…
Nitzschia sublinearis Hustedt and N. pura Hustedt are common oligosaprobic freshwater diatom species that frequently occur in diatom inventories, thus being important in water quality studies. Both are considered as species with overlapping diagnostic criteria in several floras, which is typical of the whole genus Nit…
The pseudoelastic behavior of a Co 49 Ni 21 Ga 30 ferromagnetic shape memory alloy under compression along [100] has been studied in the temperature range 300–500 K. In such a crystals, the effect of aging under a constant stress close to the critical stress to induce the martensitic transformation, produces its separ…
Abstract Summary: The synthesis of 3‐mono‐ O ‐(3′‐hydroxypropyl) cellulose via 3‐mono‐ O ‐allyl‐2,6‐di‐ O ‐thexyldimethylsilyl cellulose was studied. Conversion of the double bond with 9‐borabicyclo[3.3.1]nonane and subsequent alkaline oxidation lead to the 3′‐hydroxypropyl group. Finally, the treatment with tetrabuty…
This work first explores high resolution transmission electron microscopy (TEM) to determine the interfacial regions and provide experimental evidences for interfaces between the SDC and carbonate constituent phases of the SD-carbonate two-phase composites to further investigate the superionic conduction mechanism in…
This paper deals with damping modeling for transformer energization studies for system restoration purposes. A review of some of the literature recommendations for these studies is presented. Then, several damping models for generators, lines and transformers are benchmarked by means of simulation vs. field test measu…
A three channel High-Tc SQUID system for detection of magnetic contaminants in industrial products was developed. Finding ultra-small metallic contaminants is a big issue for manufacturers producing commercial products such as lithium ion batteries. When the contamination does occur, the manufacturer of the product su…
Abstract Anotated list of centric diatoms (Coscinodiscophyceae) of fresh and brackish water bodies of the southern Russian Far East, based on the authors' data, supplemented by the published literature, is given. It includes 143 algae species (including varieties and forms - 159 taxa) representing 38 genera, 22 famili…
In the present work, a new concept of X-ray source was developed. The conventional thermionic tungsten filament tube is commonly available in various fields of application, such as, medical diagnostic and therapy system, microwave amplifier, non-destructive testing (NDT) technology, and so on. However, it has intrinsi…
The interface structures and the chemical states between the Pt layer and polar-ZnO single crystal were investigated. Two-dimensional x-ray diffraction images revealed that Zn-polar ZnO had less mosaicity than the O-polar one. Angle-resolved hard x-ray photoelectron spectroscopy was used to investigate the chemical st…
Several improvements are described for the existing tritium enrichment system at the Isotope Hydrology Laboratory of the International Atomic Energy Agency for processing natural water samples. The improvements include a simple method for pretreatment of electrolytic cells to ensure a high tritium separation factor, a…