Materials Literature
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The demand for weight reduction in automobiles has generated strong interest in research and development of magnesium applications, especially for powertrain components. Ca-alloyed magnesium alloys have excellent creep properties and can be potentially used for powertrain applications. In order to better understand th…
Nanostructured zinc oxide (ZnO) thin films were prepared through sol-gel method and spin-coating technique. ZnO thin films then were annealed at temperature of 350°C, 400°C, 450°C and 500°C. The thin films were characterized using field emission scanning electron microscope (FESEM), UV-VIS-NIR spectrophotometer and ph…
Tuning the spin-orbit coupling (SOC) in graphene is highly desired for its application in spintronics. In this paper, we calculated the band gap induced by SOC in graphene under uniaxial strain from a tight-binding model, and found that the band gap has a monotonic increasing dependence on the strain in the range of -…
Co2+-doped MgCr2O4 nanocrystals were prepared by a microwave method. Polyvinyl alcohol (PVA), as well as Mg and Cr nitrates, with a molar ratio of metal ion to PVA monomer unit of 1:3, was irradiated with 2.45 GHz microwaves at microwave powers ranging from 400 to 900 W. These were used as precursors for Co2+-doped Mg…
The microstructure and thermal diffusivity of as-cast AM60, AE63, AJ63 and AXJ620 alloys were investigated over the temperature range 20–300°C. The microstructure of as-cast AM60 magnesium alloy consists of dendrites of α-Mg solid solution and divorced eutectic containing “islands” of α-Mg and Mg17Al12 phase. In regio…
The orientation, microstructure, and rheology in non-Brownian shear flow were studied for suspensions of dicolloidal particles using a novel particle mesh Ewald Stokesian dynamics algorithm for anisotropic particles. Four different particle shapes were studied with dicolloids modeled as the union of two intersecting s…
Oxygen transport membranes (OTMs) offer a promising technology for use in oxy-fuel and pre-combustion CO2 capture processes, for gasand coal power plants. OTMs are dense ceramic membranes which exhibit mixed conductivity of oxygen ions and electrons. This work presents systems considerations when integrating an OTM ba…
The ab initio method based on density functional theory at the B3PW91 level has been applied to study the geometric, electronic, and magnetic properties of neutral and anionic Au n Pd (n = 1–9) clusters. The results show that the most stable geometric structures adopt a three-dimensional structure for neutral Au7Pd an…
Tensile tests were conducted at low temperatures for the steel materials which are used for outer shell of the vessels making transit through the polar regions. The selected steel materials were GL-DH32, GL-DH36 and GL-EH36. In comparison with the results at room temperature, the yield stress increases approximately b…
The equilibrium concentration of vacancies in metals is invariably enhanced in the presence of interstitial hydrogen atoms – a phenomenon called superabundant vacancy (SAV) formation. It has been recognized that the SAV formation occurs in electrodeposition, as M-, H-atoms and M-atom vacancies are deposited by atom-by…
Excellent physical and mechanical properties of carbon nanotubes (CNTs) make them outstanding candidate as fillers to fabricate multi-functional polymer composites. It is assumed that a high level of dispersion in the preparation stage may lead to a more effective nanocomposite. In this research, the dispersion state…
Hydrogen-terminated, humidity-exposed type-IIa diamond exhibits high-surface $p$-type conductivity explained by the electrochemical transfer-doping model. According to this model, electrons transfer from the diamond valence band into an adsorbed water layer on the surface, leaving behind a hole accumulation layer, thu…
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Crystals of three organic compounds grown several decades ago have been retrieved from a cellar of the Faculté de Pharmacie of Paris. The presence of liquid inclusions in these large particles has provided a unique opportunity to investigate the effects of aging on these macroscopic defects. Beside their evolution tow…
Abstract Challenges in the thermal dissipation of an electronic package arise from the continuous increase in power density of higher-power devices. Carbon nanotubes (CNTs) are known as the highest thermal conductivity material (2000 W mK −1 ). This excellent thermal property suggests an approach in applying the CNTs…
PURPOSE: To determine whether MRI in combination with an intravascular contrast agent is sensitive to pharmacologically induced vasodilation and vasoconstriction in the rat kidney. MATERIALS AND METHODS: R(2) imaging was performed in 25 Sprague Dawley rats at 3 Tesla in the presence of ferumoxytol, an ultrasmall super…
Abstract The synthesis, characterization and ε‐caprolactone polymerization behavior of lanthanide amido complexes stabilized by ferrocene‐containing N ‐aryloxo functionalized β‐ketoiminate ligand FcCOCH 2 C(Me)N(2‐HO‐5‐Bu t ‐C 6 H 3 ) (LH 2 , Fc = ferrocenyl) are described. The lanthanide amido complexes [LLnN(SiMe 3…
Abstract The corrosion inhibition of ammonium heltamolybdate (AH) and calcium gluconate (CG) for AA6061 alloy in 3% NaCl solution was investigated by the electrochemical measurements. It indicates that AH inhibits the corrosion of AA6061 alloy and acts as an anodic inhibitor. Maximum inhibition efficiency reaches 74.3…
Tip-enhanced Raman spectroscopy (TERS), an emerging technique combining scanning probe microscopy (SPM) and Raman spectroscopy, provides the sensitivity and selectivity necessary for chemical imaging with nanoscale resolution. We demonstrate that coating the fragile plasmonic structures used to enhance the electric fi…
Abstract A key advantage of protein‐based materials is the potential to directly incorporate novel functions via gene fusion to produce a single chimeric polypeptide capable of both self‐assembly and the desired activity. However, facile production of functionalized protein materials is frequently hampered by the need…