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。
The purpose of this study is to develop an analytical method to quantify the nitrogen present at the surface of paper by using X-ray photo-electronic spectroscopy (XPS). A sample of softwood thermomechanical pulp (TMP) was treated with a cationic starch containing primary amines, while another one was treated with a c…
Handbook of Mathematical Relations in Particulate Materials Processing goes beyond the traditional barriers of only one material class by covering the major areas in ceramics, cemented carbides, powder metallurgy, and particulate materials. Suited for quick reference with stand alone definitions. It is the perfect com…
Molecular-dynamics simulations are carried out on the wurtzitelike $(B4)$ to rocksaltlike structure $(B1)$ pressure-induced phase transition in ZnO. A tetragonal intermediate $(iT)$ appears at the $B4/B1$ interface along the transition. A hexagonal intermediate $(iH)$ of $h$-BN type is also occasionally visited, as a…
The silk formed in the major ampullate (MA) gland of the orb weaving spider Nephila clavipes is composed of two silk fibroins, which are called major ampullate spidroins 1 (MaSp1) and 2 (MaSp2). Analysis of proteolytic peptides and reactivity to spidroin type specific antibodies indicated that MaSp2 constituted only a…
Mn (6.6–29.8%)-doped CuO thin film fabricated on a thermally oxidized silicon substrate by radio-frequency magnetron sputtering has been reported. The films were structurally characterized using x-ray diffraction with Rietveld refinement. The analysis indicates that Mn uniformly substituted at the Cu position in the C…
Abstract Antistatic composites of poly(ethylene terephthalate) (PET) and tetrapod‐shaped ZnO whisker (ZnOw), the surface of which was treated with a coupling agent, were prepared by melt‐mixing using a twin screw extruder. The structure and morphology of the blends were examined by FTIR and SEM. Antistatic performance…
Crystallization, surface morphology, and electrical behavior of BiFeO 3 thin films are improved by SrRuO 3 (SRO) buffer layer with optimized grain size. Large‐grained SRO buffer layer promotes the growth of dense multiferroic BiFeO 3 (BFO) thin films and reduces structural defects. Phase identification by using X‐ray…
N-vinyl carbazole (NVCz) random polymers were electrochemically coated onto micron-size carbon fibers in lithium perchlorate/acetonitrile$({\hbox {LiClO}}_{4} /{\hbox {ACN}})$, sodium perchlorate/acetonitrile$({\hbox {NaClO}}_{4} /{\hbox {ACN}})$, and tetraethylammonium tetrafluoroborate/acetonitrile$({\hbox {TEABF}}_…
Accurate imaging of atherosclerosis is a growing necessity for timely treatment of the disease. Magnetic resonance imaging (MRI) is a promising technique for plaque imaging. The goal of this study was to create polymeric particles of a small size with high loading of diethylenetriaminepentaacetic acid gadolinium (III)…
We report here extensive measurements of the temperature dependence of phonon density of states of ${\text{BaFe}}_{2}{\text{As}}_{2}$, the parent compound of the FeAs-based superconductors, using inelastic neutron scattering. The experiments were carried out on the thermal time-of-flight neutron spectrometer IN4 at th…
Two competing mechanisms of intrinsic defect formation in amorphous ${\text{SiO}}_{2}$ $(a{\text{-SiO}}_{2})$, i.e., the vacancy-interstitial (Frenkel) mechanism and Si-O bond dissociation to form silicon and oxygen dangling bonds, were compared under $\ensuremath{\gamma}$-ray electronic excitation. The Frenkel mechan…
Impedance spectroscopy is an effective method to investigate the dielectric properties of powders by dispersing particles in proper liquids. It allows reliable calculation of the dielectric constant by analysis of impedance spectra for a variety of particulate materials. The temperature dependence of the dielectric co…
Kinetic measurements of gas-solid reactions, in particular hydrogen-sorption kinetics, are usually interpreted according to single rate-limiting step models. However, recent studies gave clear evidence for the interdependence of fundamentally different steps involved in hydrogen sorption. This interdependence is explo…
We study the phase behaviour of a fluid composed of particles which interact via a pair potential that is repulsive for large inter-particle distances, is attractive at intermediate distances and is strongly repulsive at short distances (the particles have a hard core). As well as exhibiting gas–liquid phase separatio…
Ultraviolet upconversion emissions of 246.2 and 252.8 nm from (6)D(J) levels of Gd(3+) ions were observed in GdF(3): 10% Yb(3+), 0.7% Tm(3+) nanocrystals under 980 nm excitation from a laser diode. The (6)D(J) levels of Gd(3+) ions can be efficiently populated by energy transfer processes of Yb-->Tm-->Gd and Yb-->Gd.…
Tissue-engineered heart valves lack sufficient amounts of functionally organized structures and consequently do not meet in vivo mechanical demands. To optimize tissue architecture and hence improve mechanical properties, various in vitro mechanical conditioning protocols have been proposed, of which intermittent stra…
We report on neutron powder-diffraction experiments, inelastic incoherent neutron-scattering experiments, and density-functional calculations on dynamics, order and disorder properties of ${\text{LiBH}}_{4}$ and ${\text{LiBD}}_{4}$. From refinement of ${\text{LiBD}}_{4}$ structure at 10 and 302 K, we found an almost i…
“Heal thyself!”: A thermoplastic rubber material has recently been developed that can completely mend itself when the fracture interfaces are rejoined and left to heal for a moderate time. This “smart” rubber is easy to synthesize and displays excellent mechanical properties.
A new nutraceutical carrier, chitosan-coated nano-size liposome, which is itself bioactive, is made from phosphatidylcholine (pc) and cholesterol by the sonication method. Different factors related to the size of the liposomes such as the ratio of the pc and cholesterol and the time of sonication are investigated. At…
Using non-linear system theory and numerical simulations we map out the static and dynamic phase diagram in zero applied field of a spin torque oscillator with a tilted polarizer (TP-STO).We find that for sufficiently large currents, even very small tilt angles (beta>1 degree) will lead to steady free layer precession…