Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Optical signals are increasingly used to transfer and process information, because of their high speed, bandwidth, and propagation distances in transparent optical networks. However, the miniaturization of photonic devices faces a hard block: the diffraction limit. One proposed means to go beyond this limit is to use…
The Biefeld-Brown is a fascinating effect with which levitation can be reached without moving or rotating elements. Static voltage is applied between asymmetric electrodes and a force towards the small electrode is generated. This effect is studied experimentally in this paper. Using this effect a set of experiments i…
We analyzed the diversity and density of monogonont rotifers collected from 10 sites, 5 in the littoral zone and 5 in the pelagic zone, during a 1-year period from March 2010 to April 2011 in the reservoir Valerio Trujano, altitude 820 m a.s.l. (Tepecoacuilco de Trujano, State of Guerrero, Mexico). We also measured ph…
Cost-effective radio frequency identification (RFID) transponders (tags) were investigated for wireless corrosion monitoring by applying a metal filled conductive composite coating onto the surface of the plastic tags. The coating acted as an electromagnetic interference (EMI) shield by attenuating or completely block…
This paper aims to employ combination of residual soil and Class F fly ash in developing a controlled low-strength material (CLSM), primarily used as backfilling material. In the mixture, surplus soil and concrete sand was blended well together with a given proportion of 6:4 by volume. Three levels of binder content (…
In this paper, the effects of axial force on the mechanical properties of AZ31B magnesium alloy flat plates during the Friction Stir Welding (FSW) process were investigated by carrying out the tensile tests as per the American Society for Testing and Materials (ASTM) E8M-11 standards. The tensile test results indicate…
A brushlike PbTiO3 (PTO)/ZnO nanocomposite with ZnO nanowires (NWs) grown epitaxially on the surface of single-crystal ferroelectric tetragonal PTO NWs is successfully fabricated onto a flexible substrate via a two-step hydrothermal process. In this nanocomposite, a ZnO NW grew along [0001] on the (101) plane of the c…
While many studies have been conducted on metamaterials at microwave frequencies, comparatively few have examined their use in high-power applications. Here, we perform a general study of metamaterial geometries to identify configurations that are well-suited for utilization in high-power environments. We further deve…
The no‐load losses represent one of the most important problems for flywheels energy storage systems (FESS) which produce electrical energy from the kinetic energy stored with long waiting times between charging and discharging. This study presents a novel modular stator for use in synchronous permanent magnet (PM) el…
InFeO3(ZnO)m series of oxides are found to give unprecedented H2 evolution from water-methanol mixtures without using any cocatalysts. This family of compounds has an anisotropically layered structure in which Zn/FeOn polyhedra are sandwiched between InO6 octahedral layers. Local structure characterization by X-ray ab…
Nickel-molybdenum hydrocracking catalysts based on amorphous silica-aluminas (ASAs) with Si/Al = 0.3–1.5 have been prepared using chemicals and methods available for catalyst plants. The acidic properties of the ASA surface have been investigated by IR spectroscopy of adsorbed CO, and it has been demonstrated that the…
Lead dioxide coatings deposited from methanesulfonate electrolytes that also contain Ce 3+ ions have been investigated. It has been shown that, during the deposition, are formed lead dioxide electrodes micromodified by cerium, which have different physicochemical properties than do traditional PbO 2 anodes. The electr…
1. Jerry E. Cooley, MD (JCooley{at}haircenter.com) 1. Charlotte, North Carolina, USA Optimal graft growth is mainly dependent on surgical technique. This includes harvesting and creating grafts without transection, avoiding dehydration, and implanting grafts into the recipient sites without
OBJECTIVE: To evaluate the influence of solvent evaporation in the kinetics of water diffusion (water sorption-WS, solubility-SL, and net water uptake) and nanoleakage of adhesive systems. MATERIAL AND METHODS: Disk-shaped specimens (5.0 mm in diameter x 0.8 mm in thickness) were produced (N=48) using the adhesives: C…
Ensembles of C 6 H 6 N 12 O 12 (CL-20) clusters with different types of intercluster bonds have been studied theoretically. The stability of such cluster has been investigated and the heights of potential barriers preventing their decomposition or isomerization have been determined by means of quantum-mechanical calcu…
Dimethoxyalkanes and dimethyl alkanediyl biscarbonates were synthesized by reactions of diols with dimethyl carbonate in the presence of tungsten and cobalt carbonyls. Optimal reactant and catalyst ratios and reaction conditions were found to ensure selective formation of dimethoxyalkanes or dimethyl alkanediyl biscar…
Noble metals such as gold and silver have been extensively used for plasmonic applications due to their ability to support plasmons, yet they suffer from high intrinsic losses. Alternative plasmonic materials that offer low loss and tunability are desired for a new generation of efficient and agile devices. In this pa…
The structure and properties of active powder of discretely devulcanized rubber (APDDR) produced by the technique of high-temperature shear-induced grinding in rotary dispergators is studied. The morphology of APDDR particles, including such particles after mixing with hot bitumen, is examined by electron and atomic f…
Using first-principles calculations within density functional theory, we study the atomic structures and electronic properties of the perfect and defective (2V Cu +In Cu ) CuInGaSe 2 /CdS interfaces theoretically, especially the interface states. We find that the local lattice structure of (2V Cu +InC u ) interface is…
Aqueous solutions of the fullerene C 60 (nC 60 ) were prepared by simple mixing of the solution of C 60 in N-methylpyrrolidone (MP) with deionized water or an aqueous solution of a low-molecular-weight natural substance (L-amino acids, monosaccharides, peptides, or glycerol) used as stabilizing agents (SAs) followed b…