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 frequency selectivity of coplanar transmission lines loaded with split ring resonators and shunt strips was dramatically improved owing to a blueshift of the electrical plasma frequency by oversizing the strip width. Beyond a higher rejection level, which was expected as a consequence of the deepening of the forbi…
Abstract A series of arotinoids with a central benzofuran or naphthofuran ring structure were synthesized by an efficient three‐step process. Most of these 3‐substituted naphthofuran arotinoids are potent agonists of the retinoic acid receptor (RAR) subtypes, with activities in the nanomolar range. magnified image A c…
Abstract Jacquard woven fabrics are made from colored yarns and different weaves for designing complex pictorial and other patterning effects. The final visualized color effect is the result of assigning weave designs to different areas of the pattern to be created. The current practice in creating Jacquard woven fabr…
Different cationic adducts of poly(ethylene oxide)/polystyrene block co-oligomers could be produced by adjusting the salt concentration in the mobile phase using a coupling between liquid chromatography at critical conditions and electrospray ionization mass spectrometry. Formation of doubly lithiated adducts was obse…
A carbon nanotube (CNT) can be viewed as a molecular nozzle. It has a cylindrical shape of atomistic regularity, and the diameter can be even less than 1 nm. We have conducted molecular-dynamics simulations of water jet from a (6,6) CNT that confines water in a form of single-file molecular chain. The results show tha…
Here, we carried out a study on strontium doping effect on the rectifying properties of La2−xSrxCuO4 (LSCO)/NSTO heterojunctions. The intimate relationship between the change in electronic structure of LSCO and the variation of diffusion potential (Vd) of the junction supports opportunities for detecting Fermi level s…
Using the level-spacing (LS) statistics, we have investigated the localization-delocalization transitions (LDTs) in Hessian matrices of a simple fluid with short-ranged interactions. The model fluid is a prototype of topologically disordered systems and its Hessian matrices are recognized as an ensemble of Euclidean r…
Abstract Platin wird an die Oberfläche gelockt: Die Oberflächenzusammensetzung von Pt3Co‐Katalysatorpartikeln auf einem Kohlenstoffträger verändert sich durch die Behandlung mit CO. Pt‐Atome wandern an die Oberfläche, sodass Nanopartikel mit einer Pt‐Schale um einen Legierungskern entstehen (siehe Schema). Dieser modi…
Abstract Reaction of the Schiff‐base ligands 4‐(4‐NC5H4)C6H4C(H)=N(C6H3OH‐2‐tBu‐5) (a) and (4‐NC5H4)C(H)=N(C6H3OH‐2‐tBu‐5) (b) with palladium(II) acetate in toluene at 60 °C gave the tetranuclear orthometallated palladium complexes 1a and 1b, respectively, as air‐stable solids. Treatment of 1a and 1b with triphenylpho…
The dispersion properties of surface modes supported by metal/dielectric interfaces perforated by two-dimensional arrays of subwavelength apertures are studied. An analytical surface-impedance model is derived. It provides closed-form expressions for the dispersion relation of surface modes and allows to take into acc…
The effect of the surrounding dielectric on the conductivity of GaN nanowires is measured experimentally. The two following configurations are considered: bare suspended and SiO2-coated nanowires. The measured conductivity is consistently fitted by two exponential terms with different activation energies, indicating m…
The ability to control the size of nanostructures still presents one of the biggest challenges in nanosciences. While impressive progress has been made toward diameter-controlled synthesis of nanocrystals via solution-phase chemical techniques, control over nanowire diameters grown via the gas-phase vapor−liquid−solid…
We study a one-dimensional gas of needlelike objects as a testing ground for a formalism that relates the thermodynamic properties of "hard" potentials to the probabilities for contacts between particles. Specifically, we use Monte Carlo methods to calculate the pressure and elasticity coefficient of the hard-needle g…
Thin films of Ca3Co2O6 were fabricated on c-cut sapphire substrates by pulsed laser deposition. The films are polycrystalline and can be grown in a large interval of oxygen pressure with significant influence on the film texture. X-ray photoelectron spectroscopy analyses indicated that only Co3+ ions are present in ou…
Bidisperse granular mixtures in spherical tumblers segregate into three bands: one at each pole and one at the equator. For low fill levels, large particles are at the equator; for high fill levels, the opposite occurs. Segregation is robust, though the transition depends on fill level, particle size, and rotational s…
The growth and evolution of Ag nanolayers on differently-passivated Si(001) substrates at ambient condition have been studied. Initial compactness and smoothness of Ag nanolayer on the H-passivated Si(001) surface are found better compared to those on the Br-passivated Si(001) surface, which can be understood consider…
We present a new analytical solution for the static shape of a two-dimensional droplet in equilibrium with a surrounding thin film on a solid substrate. The modeling includes the effects of capillarity and disjoining-conjoining pressure accounting for intermolecular forces between the solid and the liquid. We derive n…
We demonstrate that the addition of a carbon impurity leads to significant changes in the thermodynamic properties of a ${\text{Ni}}_{147}$ cluster. The magnitude of the change induced is dependent on the parameters of the Ni-C interaction. Hence, thermodynamic properties of Ni clusters can be effectively tuned by the…
The radiometric force on several configurations of heated plates placed in a stagnant gas is examined experimentally, with a high-resolution thrust stand, and numerically using the direct simulation Monte Carlo method and a discrete ordinate solution of a model kinetic equation. A wide range of pressures from 0.006 to…
Abstract The degradation of chemical warfare agents is investigated. Active carbon, in minor quantities (5–25 wt %), renders nitrogen‐doped titania active towards the degradation of several such compounds. This cooperative effect is attributed to the preferential generation of reactive oxygen species on the photocatal…