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。
Film developments: Multiwalled carbon nanotubes are flexible enough to coat polystyrene microspheres (see image). A monolayer of such spheres can be deposited onto a glass substrate and then coated with a polymeric thin film, which retains the conducting properties of the carbon nanotubes. Such nanoengineered material…
We report a study of the Mn local structure, magnetism, and Ga moments in molecular beam epitaxy grown Mn-doped GaN films. Using x-ray absorption spectroscopy and magnetic circular dichroism, we find two distinct Mn sites and a Ga moment antiparallel to Mn. First-principles calculations reproduce this phenomenology an…
In the form of a tutorial addressed to non-specialists, the article provides an introduction to nuclear reactor technology and more specifically to Light Water Reactors (LWR); it also shows where materials and chemistry problems are encountered in reactor technology. The basics of reactor physics are reviewed, as well…
Abstract Polyaniline (PANI) has attracted lasting interest due to its unconventional electronic, optical, and electro‐optical properties. A rigid backbone polymer, PANI exhibits very strong intra‐ and intermolecular interactions governing its overall behavior. The purpose of this study is to investigate theoretically…
The $\ensuremath{\beta}$ relaxation is a principal source of information about the dynamics in the glassy state; however, the nature of this process remains a controversial issue. In this paper, we show that properties of the $\ensuremath{\beta}$ relaxation measured below ${T}_{\mathrm{g}}$ are sensitive to the struct…
Gut gemischt! Zn1−xCoxO-Nanodrähte wurden mit einem lösungsbasierten Syntheseverfahren erhalten. Gemäß struktureller, optischer und spektroskopischer Charakterisierung ersetzen bei der Cobaltdotierung die Cobaltatome die Zinkkationen im Wirtsgitter (im Bild sind Co-dotierte ZnO-Nanodrähte zu sehen).
The dielectric and conductive properties of Bi3.25La0.75TiO3 ferroelectric films were investigated in the temperature range of 25°C–600°C. A dielectric peak with a relaxation-type characteristic was observed around 400°C. This peak can be greatly suppressed or eliminated by high sintering temperature or annealing in a…
In the first stage, we observed the study of the degradation behavior of alkaline-treated poly(epsilon-caprolactone) (PCL) in two biologically-related media: phosphate buffered saline (PBS) and Dulbecco's modified Eagle's medium (DMEM) for 18 months, finding a much accelerated degradation in the last one. As expected,…
We have investigated the dual functionality of multiferroic YMnO3, which simultaneously possesses antiferromagnetic and ferroelectric properties. When the YMnO3 was used as a pinning layer, it gave rise to an exchange bias and enhanced coercivity in a soft ferromagnetic film which depended on the YMnO3 crystal orienta…
We demonstrate that nonlinear electrical transport through a two-terminal nanoscale sample is not symmetric in the magnetic field B. More specifically, we have measured the lowest order B-asymmetric terms in single-walled carbon nanotubes. Theoretically, these terms can be used to infer both the strength of electron-e…
Plutonium recycling in Light Water Reactors is today an industrial reality. It is recycled in the form of (U, Pu)O2 fuel pellets (MOX), fabricated to a large extent according to UO2 technology and pellet design. The similarity of physical, chemical, and neutron properties of both fuels also allows MOX fuel to be burnt…
TEST 02 - Elsevier's Scopus, the largest abstract and citation database of peer-reviewed literature. Search and access research from the science, technology, medicine, social sciences and arts and humanities fields.
Iodine is a main fission product of the fuel generated during power operation in nuclear power plants (NPPs). A severe NPP accident can cause fuel, containing fission products (FPs), control rod assemblies and core structures to melt and then release into the containment. The key signatures of iodine behaviour during…
The halides ${\mathrm{CaCl}}_{2},{\mathrm{CaBr}}_{2}$, and ${\mathrm{CrCl}}_{2}$ all adopt, at room temperature, the same distorted rutile structure, in orthorhombic space group $\mathit{Pnnm}$, known as the calcium chloride structure. Upon heating, ${\mathrm{CaCl}}_{2}$ and ${\mathrm{CaBr}}_{2}$ each undergoes a cont…
Nanocrystalline Ba1−xSrxTiO3 (0 < x < 1) nanopowders were prepared through the oxalate route and the influence of the thermal history on their dielectric properties was investigated. For pelletized samples obtained by decomposing the corresponding oxalate intermediates at 600 °C and then annealed at different temperat…
We have developed an approach to generate micropatterns of anisotropic organic materials which exploits the self-organization, driven by pi-stacking and hydrophobic interactions, of an ionic perylenebis(dicarboximide) in aqueous solutions.
A noncatalytic and template-free vapor transport process was developed to make possible simultaneous growth of single-crystalline tin nanowires, nanosquares, nanodisks, and polycrystalline nanoparticles. The formation of such a rich variety of morphologies in a single growth experiment can be attributed to variations…
Infection of implanted materials by bacteria constitutes one of the most serious complications following prosthetic and implant surgery. In the present study, a new strategy for confering stainless steel with antibacterial property via the alternate deposition of quaternized polyethylenimine (PEI) or quaternized polye…
High-pressure behaviors of bulk and nanocrystalline $\mathrm{Sn}{\mathrm{O}}_{2}$ samples have been studied by in situ high-pressure synchrotron radiation x-ray diffraction measurements up to about $40\phantom{\rule{0.3em}{0ex}}\mathrm{GPa}$ at ambient temperature. It is found that the smaller the nanocrystal $\mathrm…
Local pressures are important in the calculation of interface tensions and in analyzing micromechanical behavior. The calculation of local pressures in computer simulations has been limited to systems with pairwise interactions between the particles, which is not sufficient for chemically detailed systems with many-bo…