Materials Literature
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The 18%Ni alloy steels provide high strength and toughness, while age-hardenable or PH stainless steels also have good corrosion resistance. This paper focuses on an investigation of the heat treatment, mechanical properties and microstructural development of a new maraging stainless steel. It is reported that the hea…
The authors report molecular dynamics simulations of alumina (Al2O3) during crystallization from the melt. Using liquid quench methods, they investigate the effect of cooling rate on the structural evolution of the alpha, kappa, and the bixbyite phases. A critical temperature window is identified, where the time spent…
The authors report on colossal electroresistance (ER) in the ferromagnetic insulator manganite La0.9Sr0.1MnO3. The single crystal samples exhibit a transition into a low resistive state above a certain threshold current. Pulsed measurements demonstrate that this transition is not a consequence of heating. ER behaves s…
The growth and characterization of epitaxial (111)-oriented Pb(Zr0.35Ti0.65)O3 films deposited by metal organic chemical vapor deposition on (100)-oriented silicon substrates [(111)SrRuO3‖(111)Pt‖(100)yttria-stabilizedzirconia‖(100)Si] are reported. The orientation, microstructure, and electric properties of these fil…
High performance complementary inverters have been fabricated using single-walled carbon nanotubes. The Al2O3 top-gate dielectric is grown via first depositing an Al film followed by complete oxidation of the film. It is shown that the quality of the Al2O3 film can be significantly improved by annealing at 400°C, and…
The authors demonstrate photoluminescence from a multilayer stack comprising of thin amorphous silicon/silicon nitride multilayer stack. The peak emission wavelength is in the visible wavelength range (λ=674–706nm). The authors show that emission originates from the quantum confinement of the amorphous silicon layers.…
Recently it has been revealed that even a single-component liquid can have more than two liquid states. The transition between these liquid states is called the "liquid-liquid transition." Most known liquid-liquid transitions occur at temperatures and pressures which are difficult to access experimentally, so the phys…
Agcore Aushell nanowires with different thicknesses were prepared by combining template synthesis and chemical reduction method,and characterized by SEM and cyclic voltammetry(CV).The CV results revealed that the AgcoreAushell nanowires with pinhole were transferred to pinhole free structure after several potential sc…
The authors experimentally demonstrate an electrically switchable gratings based on polymer-stabilized, field-induced two-dimensional square-lattice pattern of a cholesteric liquid crystal. A dependence of the two-dimensional diffraction patterns with the magnitude of applied voltage is observed for before and after t…
An austenitic antibacterial stainless steel is reported in this paper. The very fine and dispersive epsilon-Cu precipitations in the matrix of the antibacterial steel after the antibacterial treatment endow the steel with antibacterial function. The antibacterial function is strong, long-term and broad-spectrum, and c…
The authors investigate the effect of oxygen implantation and rapid thermal annealing in ZnO∕ZnMgO multiple quantum wells using photoluminescence. A blueshift in the photoluminescence is observed in the implanted samples. For a low implantation dose, a significant increase of activation energy and a slight increase of…
Structural and magnetic properties of the FexPt100−x (x=78–88) alloys have been investigated. It is found that for all of the investigated compositions, a phase transition occurs from the disordered γ phase to the ordered α phase during cooling, while a reverse process takes place during heating. Moreover, magnetic fi…
The experimental study of the effect of temperature on the complex optical response of matrix-embedded noble metal nanoparticles has been carried out. A thin silica film containing gold nanoparticles with 7% volume fraction has been elaborated. Its thermo-optical refraction and absorption coefficients have then been e…
An overview of the development and current status of the directional solidification process assisted by liquid metal cooling (LMC) has been presented in this paper. The driving force of the rapid development of the LMC process has been analyzed by considering the demands of (1) newer technologies that can provide high…
The mobility of isolated polychlorinated biphenyl (PCB54) in 1,4-polybutadiene (PB) has been investigated by means of broadband dielectric spectroscopy. The aim was to provide new insights about the effect of the environment on the dynamics of PCB54. The authors' results indicate that PCB54 structural dynamics is neit…
The ferroelectric behavior in terms of electrical polarization and fatigue and dielectric properties at elevated temperature of the ferroelectric Bi3.25Sm0.75V0.02T2.98O12 thin film fabricated by the pulsed laser deposition method were studied. Its switchable polarization increased at elevated temperature, and the coe…
First-principles calculations based on density functional theory were carried out to investigate single-wall tungsten carbide nanotubes and their applications to energy storage, such as hydrogen storage and fuel cell. The pristine tungsten carbide nanotube was metallic. The W atop site is the most stable adsorption si…
Previous experiments on nanocrystalline Ni were conducted under quasistatic strain rates (∼3×10−3∕s), which are much lower than that used in typical molecular dynamics simulations (>3×107∕s), thus making direct comparison of modeling and experiments very difficult. In this study, the split Hopkinson bar tests r…
Digital superlattices of (LaMnO3)m∕(SrMnO3)2m (m⩽3) having the same nominal composition as La1∕3Sr2∕3MnO3, an antiferromagnetic insulator, have been synthesized by means of molecular beam epitaxy. All superlattices show a sharp resistive maximum at temperatures near to or higher than the Néel temperature of bulk La1∕3…
The authors present the results of molecular dynamics simulations of polymer films confined by smooth walls. Simulations were performed for a wide range of chain lengths covering both nonentangled and entangled regions, as well as film thicknesses ranging from the order of unperturbed chain size to the bulk state. The…