Materials Literature
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A facile one-step microemulsion method was applied to introduce a Mo promoter into a [email protected] catalyst with a yolk-shell structure ([email protected]). Mo atoms were inserted in the silica shell framework to form SiMoOx species instead of a typical NiMo alloy. It was found that the formation of SiMoOx signifi…
The selective wet etching characteristics of AgInSbTe film as a new thermal lithography material were studied with ammonium sulfide solution as etchant. Influences of vacuum-annealing temperature, etchant concentration and wet etching time on selective wet etching characteristics of the amorphous and crystalline AgInS…
In this paper, the effect of sintering temperature on microstructure and donor solid solubility of Nb-doped TiO2varistor ceramic is investigated. SEM and EDXS were carried out to study the microstructure and chemical compositions of TiO2grain. The results show that the TiO2sample sintered at 1350°C have better microst…
Purpose: To study the effect of geometrical and electrical parameters on focal spot size (FSS) of TiO2 nanotube field emission X-ray tube. The X-ray tube parameters were optimized to achieve the smallest FSS for different cathode sizes and anode voltages. Methods: The simulations were performed using the industry stan…
Alumina (Al2O3) and Al2O3-based ceramics are candidate wear-resistant materials for many applications. In the past decades, the friction and wear behaviors of Al2O3 and Al2O3-based ceramics in dry sliding and lubricated conditions have been extensively investigated. In dry sliding, surface modification of Al2O3 and Al…
Lead selenide has been the subject of considerable interest because of its potential applications in many fields. In this paper, the synthesis of lead selenide nanostructures is described. The Morphologies of as prepared lead selenide nanostructures are summarized. And the applications and prospects of lead selenide i…
In this paper, pure ZnO nanospheres and IO3- ions doped ZnO nanospheres were prepared by heating under reflux with zinc acetate and diethylene glycol as raw materials, and the ZnO dye-sensitized solar cells (DSCs) were prepared. The influences of reaction time and IO3--ions dope on ZnO properties were studied. DSCs pr…
The influence of magnetoelectric interactions on the magnetic structure, flexomagnetoelectric polarization and magnetization in thin multiferroics film has been investigated. The correlation between antiferromagnetic domain structure and ferroelectric domain pattern has been revealed. It has been shown the asymmetry o…
Abstract In Germany radon exposure at certain workplaces has been regulated by the Radiation Protection Ordinance since 2001. However in Bavaria studies have been conducted since 1996. The radon exposure of all staff concerned was estimated and thereby several companies were identified where the exposure exceeded 6 mS…
Nano-Cordierite powders used for high frequency chip inductors (MLCIs) were prepared by the sol-emulsion-gel method. The samples derived from these powders could be sintered at 900°C to be cordierite ceramics having a low dielectric constant and dielectric loss (ε=3.18, tgδ=0.00011; 1GHz). Effects of precursor concent…
In order to compare the absorbing properties of different microwave-absorbing agents and their mixture, this paper has selected two typical microwave-absorbing agents which respectively are carbon fiber resistance microwave-absorbing agents and ferrite magnetism microwave-absorbing agents, and took them as monolayer a…
Abstract Summary: Aqueous dispersions of diblock copolymer micelles with homogeneous hydrophobic core (polystyrene) and heterogeneous amphiphilic corona from ionic N‐ethyl‐4‐vinylpyridinium bromide (EVP) and hydrophobic 4‐vinylpyridine (4VP) units have been prepared at pH 9. The structure and dispersion stability of m…
Purpose: To use the Monte Carlo code PENELOPE to study attenuation and tissue equivalence properties of a‐Al2O3:C for OSL dosimetry. Methods: Mass attenuation coefficients of α‐Al2O3 and α‐Al2O3:C with carbon percent weight concentrations from 1% to 150% were simulated with PENELOPE Monte Carlo code and compared to ma…
The effects of preparation conditions on the synthesis of polyaniline and its anticorrosion performance were investigated using single-factor method. The experimental results showed that the better conditions for electrochemical synthesis of polyaniline films are 0.5 M aniline, 0.8 M H2SO4, range of sweep voltage 1.6…
We performed a shot peening test and used a 2-D finite element model which predicts the compressive residual stress distribution below the material's surface. In this study, the concept of 'impact cycle' is introduced to account for the irregularity in the shot's impact position during testing. The impact cycle was im…
Raman scattering has been one of the well known spectroscopic phenomena since 1928 when it was first observed by‐ C.V. Raman. With the state of the art of laser and silicon technology, Raman spectroscopy enjoys its renaissance in modern days. Based upon newly developed stabilized diode lasers and the extremely sensiti…
Porous yttria-stabilized zirconia (YSZ) ceramics were fabricated by tert-butyl alcohol (TBA)-based gelcasting method using high solid loading slurry. Micron pores were generated by using low-cost carbon powder as the pore-forming agent. The TBA-based slurries of 50% solid loading appropriate for gelcasting were succes…
A patterned nanodiamond film is grown using microwave plasma-enhanced chemical vapor deposition. A selective growth method compatible with traditional silicon processing is described. A diamond pattern of high quality and moderate resolution is achieved. The process utilized is simple to generate patterns without etch…
Because of the increasing global demands for more energy productions, several green energy sources (such as wind, solar, biomass, etc.) have attracted great interest from many governments and industries. Among them, wind energy showed one of the highest levels of advancement for the last several years. Still, many cha…
PURPOSE: To correct for dark current and detector image lag in multi-source carbon nanotube (CNT) based imaging systems. METHODS: CNTs can be used as a novel electron source for X-ray generation. Here a small (∼2 kV) gate voltage induces a large electric field at the CNT tip that causes field emission as opposed to th…