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。
Abstract A wide‐band reflective polarizer from glassy siloxane cyclic side‐chain liquid crystals with stable optical properties was developed. The pitch gradient that formed was first stored by rapid cooling, which, by preventing the crystallization of glassy materials, was a very easy way of keeping the molecular arr…
The work presents a study of the formation of defects created by argon ion sputtering of UO 2 thin film surfaces using high-resolution X-ray photoelectron spectroscopy with photon energy of 625 eV. Stable-defected surfaces of UO 2- x were monitored by the uranium core level lines found at the low-binding energy side o…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
We studied the optical gain characteristics of CdSe/ZnS core/shell colloidal quantum rods, investigated their temperature dependence, and compared the gain properties with quantum dots (QD). The gain was measured systematically for close-packed films of rods and dots under quasi-CW nanosecond optical pumping, using th…
We describe a novel purification process for single-wall carbon nanotube (SWNT) materials that removes non-nanotube carbon and reduces ferromagnetic impurities to levels at which native SWNT magnetic properties predominate. Ferromagnetism is reduced from 1.04 to less than 0.013 emu/g by magnetic gradient filtration. T…
Abstract Polyurethane (PU) coatings are widely used for variety of high‐performance applications in today's coating technology. The emerging hyperbranched polymers having three‐dimensional morphology have opened a new avenue to tailor the architecture of PU coatings. The methodology followed here is based on preparati…
We measured the elastic modulus of individual multiwalled carbon nanotubes (MWCNTs) grown by catalytic chemical vapor deposition (CVD) over a broad diameter range (10-25 nm). Alternating current (ac) dielectrophoresis was used for efficient tube deposition, and atomic force microscope (AFM) force-displacement curve te…
The colonization of epilithic diatoms on artificial hard substrates (marble, quartzite and slate) was investigated on a seasonal basis in a subtidal site of the northern Adriatic Sea to determine if substrate-dependent differences in colonization occurs and to define the seasonal variations of microepilithic communiti…
The composition and lattice parameters of co‐precipitated (La 0.3 Y 0.7 ) orthophosphate were studied using X‐ray diffraction (XRD), transmission electron microscopy (TEM), and energy dispersive X‐ray spectroscopy (EDX). The results indicate that the as‐precipitated powder consists of single‐phase (La 0.3 Y 0.7 PO 4 ·…
Abstract To improve the mechanical properties of zein films, a commercial white zein was reacted in glacial acetic acid (HAc) with glutaraldehyde (GDA) from 0.5 to 16% by weight based on the weight of zein. Amounts of 4% or higher GDA‐modified zein, when cured in a closed system, generated a gel. That gel was insolubl…
The first use of magnetic nanoparticles (MNPs) as assembling components in complex coacervation is presented. The single-step formation of MNP-based microspheres (see figure) can be considered as a NP self-assembly process induced by the presence of polyelectrolytes, in which solid microspheres are rapidly generated a…
This paper presents the influence of the iron fraction and of the sintering atmosphere on the magnetic properties of bulk iron-doped indium oxide In 2− x Fe x O 3 . The formation of a solid solution between β - Fe 2 O 3 and In 2 O 3 up to x ∼0.3 under argon atmosphere and x ∼0.55 under air has been evidenced. All sing…
The structure of a new mineral jadarite, LiNaSiB(3)O(7)(OH) (IMA mineral 2006-36), has been determined by simulated annealing and Rietveld refinement of laboratory X-ray powder diffraction data. The structure contains a layer of corner-sharing, tetrahedrally coordinated Li, Si and B forming an unbranched vierer single…
At a silver surface, surface-enhanced Raman scattering (SERS) technique along with the self-assembled monolayers (SAMs) method was performed to observe the adsorption behavior of AMT as a protective reagent for metals from corrosion. For 20 h of self-assembling, the time-dependent SERS spectra show that a stable AMT m…
The effect of chain-end chemistry on surface and interfacial segregation in symmetric blends of polystyrene (hPS)/deuterated polystyrene (dPS) has been investigated by X-ray photoelectron and secondary ion mass spectroscopy in conjunction with neutron reflectivity measurements. Alpha,omega-fluoroalkyl- and alpha,omega…
We present aspects of strong electron correlation in a model of a $BI∕M∕BI$ heterostructure where $BI$ is a band insulator and $M$ can be tuned from a metal to a Mott insulator by varying the on-site repulsion. An effective one-dimensional Schr\"odinger equation for the low-energy part is derived in the framework of t…
The influence of phase formation on the dielectric properties of silicon nitride (Si 3 N 4 ) ceramics, which were produced by pressureless sintering with additives in MgO–Al 2 O 3 –SiO 2 system, was investigated. It seems that the difference in the dielectric properties of Si 3 N 4 ceramics sintered at different tempe…
A phenomenological model is implemented to study the decay rates of fluorescing molecules in the vicinity of a metallic nanoparticle, wherein the nonlocal optical response of the particle is accounted for via the hydrodynamic model for the description of the free electrons in the metal. These nonlocal effects are exam…
We examined the effect of binding of rose bengal (RB) to alkylamide-terminated PAMAM G5 dendrimers on their temperature-sensitive properties. The cloud point of aqueous solutions of the isobutyramide-terminated dendrimer decreased with increasing amount of RB molecules bound to the dendrimer. The propylamide-terminate…
Enzyme catalysis reflects a dynamic interplay between charged and polar active site residues that facilitate function, stabilize transition states, and maintain overall protein stability. Previous studies show that substituting neutral for charged residues in the active site often significantly stabilizes a protein, s…