Materials Literature
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Nanotechnology, the design and manipulation of materials at the atomic scale, may well revolutionize many of the ways our society manufactures products, produces energy, and treats diseases. Innovative nanotechnology products are already reaching the market in a wide variety of consumer products. Some of the observed…
Near edge x-ray absorption fine structure (NEXAFS) spectroscopy has been employed to obtain the temperature dependent evolution of the electronic structure of acid treated carbon nanotubes, which were further modified by dielectric barrier discharge plasma processing in an ammonia atmosphere. The NEXAFS studies were p…
This article presents an experimental study on the foaming behavior of recyclable high-melt-strength (HMS) branched polypropylene (PP) with CO 2 as a blowing agent. The foamability of branched HMS PP has been evaluated using a tandem foaming extruder system. The effects of CO 2 and nucleating agent contents on the fin…
The environmental scanning electron microscope (ESEM) represents one of the most exciting breakthroughs in electron microscopy since the invention of the electron microscope. Its ability to observe uncoated and hydrated samples enhances the possibility for investigating the wettability of surfaces at a microscopic lev…
Purpose The paper aims to evaluate the influence of mechanical properties of sewing threads on the seam pucker. Design/methodology/approach The mechanical properties of sewing thread were obtained performing tensile testing research. The seam pucker of lightweight fabric was evaluated after sewing, then after 24 h, af…
The purpose of this review is to re-examine some of the existing knowledge on the ultrastructure of softwood fibres and modelling of the hygroelastic properties of these fibres. The motivation is that the ultrastructure of wood fibres has a strong influence on fibre properties such as stiffness and hygroexpansion. Thi…
Automotive plastic components are often required to withstand impact loadings and dissipate energy in automotive collisions, protecting occupants and pedestrians. The design of plastic components against impact loading is not a trivial engineering task, but still a challenging activity. The optimisation of the impact…
We have quantified two-dimensional dopant profiles in Si with high accuracy using a commercial field emission gun scanning electron microscope with added secondary electron energy-filtering capabilities. Quantification was achieved for dopant concentrations of 2.8×1017–7.5×1019cm−3 with an accuracy of ±8.5%. Using ene…
When a water drop falls onto an oil-water interface, the drop usually rests for some time before merging with the water underneath the interface. We report experiments on this process using water- and oil-based Newtonian liquids and polymer solutions, with an emphasis on the non-Newtonian effects. We deduce that the d…
In this study, we have investigated the effects of grain size on the structural and magnetic properties of La0.8Sr0.2MnO3 powder samples. The Williamson-Hall method was employed on the x-ray peak profile of these powder samples to determine the lattice microstrain. It was found that the microstrain increases by decrea…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Jonathan M. Bricker, Jason E. Butler; Oscillatory shear of suspensions of noncolloidal particles.…
Transparent films of Fe-doped indium tin oxide (ITO) were grown at oxygen pressures of 5, 1, 10 -1 , 10 -2 , and 10 -3 Pa on yttria-stabilized zirconia (001) substrates by a pulsed-laser deposition method. We observed X-ray diffraction peaks from (00 h ) planes of In 2 O 3 crystalline phase for the films. The films gr…
X-ray microtomography has been used to investigate the mechanisms responsible for rising crack growth resistance with crack propagation (R curve behaviour) in polygranular nuclear graphite. Tomography can be used to observe changes in the crack shape with propagation, and a side grooved specimen has been developed to…
The performance of the advanced Zr alloys (HANA) for a high burn-up fuel has been evaluated in the out-of-pile and in-pile conditions. The corrosion resistance of the HANA claddings was superior to Zicaloy-4 in a PWR-simulating loop condition. The improved corrosion resistance of the HANA claddings was attributed to t…
Perovskite (1- x )BiFeO 3 – x PbTiO 3 thin films have been synthesized by the chemical solution deposition of metalorganic compounds. Homogeneous and stable BiFeO 3 –PbTiO 3 precursor solutions were prepared by selecting appropriate starting materials and 2-methoxyethanol as a solvent. Perovskite BiFeO 3 –PbTiO 3 powd…
The structural and electronic properties of oxygen substitutional doping in a (10,0) BN nanotube were obtained using ab initio calculation based on the density functional theory. For the oxygen replacing a boron atom in the tube$(hboxO_ B)$, the structure is locally deformed. In the case of nitrogen substitution$(hbox…
A four-lamp thermal image furnace has been developed to conduct high temperature x-ray diffraction in reflection geometry on oxide ceramic powder samples in air at temperatures ⩽2050K using synchrotron radiation. A refractory crucible made of Pt20%Rh alloy was used as a specimen holder. A material with well characteri…
Intense green, orange or magenta luminescence was observed in rare-earth doped alkaline earth (Ca, Sr, and Ba) stannates, particularly strontium stannates with perovskite-related structures. Tb–Mg codoped SrSnO 3 showed sharp emission lines corresponding to Tb ions as a green phosphor. Sm doped Sr 3 Sn 2 O 7 exhibited…
A thermodynamic theory is developed for equilibrium 180° stripe domains in ferroelectric thin films on insulating substrates. Such stripe domains form to minimize the energy of the depolarizing field, and lead to a suppression of TC in thin films. Expressions including depolarizing field and domain wall energy are dev…
In this study, lead-free (LiNaK)(NbTaSb)O 3 piezoelectric ceramics were fabricated on the basis of the amount of K 2 CO 3 addition, and their piezoelectric and dielectric properties were investigated by varying the amount of K 2 CO 3 addition and poling temperature. First, to achieve optimum poling conditions for manu…