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 interaction of microwaves with carbon nanotubes (CNTs) is an interesting topic for a variety of potential applications. Microwaves have been used for the purification of CNTs and for their chemical functionalization, providing a technique for simple, green, and large-scale protocols. In addition, the selective des…
The size, shape, and surface chemistry of a gold nanostructure can influence its adsorption and internalization by a cell (see image). This work compares gold nanostructures of two different sizes, two different shapes, and three different surface functional groups.
Abstract Interest in sustainable non‐hydrocarbon‐based fuels for transportation has grown as the realization that the supply of fossil fuels is limited and the deleterious environmental effects of burning them has come into public focus. The use of hydrogen (H 2 ) has been proposed as an alternative, but its use in pu…
The puzzling nature of magnetic and lattice phase transitions of iron pnictides is investigated via a first-principles Wannier function analysis of representative parent compound LaOFeAs. A rare ferro-orbital ordering is found to give rise to the recently observed highly anisotropic magnetic coupling, and drive both p…
Stable aqueous dispersions of polymer-modified graphene sheets were prepared via in situ reduction of exfoliated graphite oxides in the presence of cationic poly(ethyleneimine) (PEI). The resultant water-soluble PEI-modified graphene sheets were then used for sequential self-assembly with acid-oxidized multiwalled car…
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTMetal- and Anion-Binding Supramolecular GelsMarc-Oliver M. Piepenbrock, Gareth O. Lloyd, Nigel Clarke*, and Jonathan W. Steed*View Author Information Durham University, Department of Chemistry, South Road, Durham DH1 3LE, United Kingdom* To whom correspondence should be addre…
Thin films of a blend of 90, 75, 50 (wt/wt%) percentage of polyethylene oxide and polyvinyl alcohol were synthesized and irradiated with 5, 25, 50, 100 and 200 kGy. The presence of PVA leads to diffusion controlled mechanism where it decreases the crystallinity of PEO as restricted crystallization occurs.Low doses of…
El objetivo principal de este resumen es mostrar los puntos claves que justifican el desarrollo de modificaciones superficiales de los materiales, particularmente de los metales, para mejorar sus propiedades biomedicas. En la introduccion se describe la evolucion en el tiempo que ha sufrido el concepto de lo que es un…
The present work employs the complete energy matrices for a d8 configuration ion in a D2h symmetry ligand field at first time to study the relationship between electron paramagnetic resonance (EPR) spectra and local structure of (NiF6)4− coordination complex in Ni2+:ZnF2, NiF2, and Ni2+:MgF2 systems, respectively. The…
Cubic pyrochlore Bi 2 O 3 –ZnO–Nb 2 O 5 (BZN) thin films with different zinc contents have been deposited on Pt(111)/TiO x /SiO 2 /Si(100) substrates by rf magnetron sputtering. Dielectric property measurements revealed the dependence of dielectric properties on zinc content in BZN thin films. BZN thin films with a co…
Field-emission displays (FEDs) retain the advantages of cathode-ray tubes (CRTs), namely, high color reproducibility, fast response, wide viewing angle, and high contrast level. The emitters used in FEDs are based on the principle that electrons are emitted by a strong electric field. It is necessary to obtain an elec…
We have synthesised two novel series of octaphenoxyphthalocyaninato copper(II) complexes, (m-C n O)PcCu (n = 2–10: 2b–f), and bis(octaphenoxyphthalocyaninato)terbium(III) complexes, [(m-C n O)Pc]2Tb (n = 2–10: 3b–f), which were substituted by dodecyloxy chains at the p-positions in the phenoxy groups and various lengt…
A novel heterometallic tetranuclear complex [Cr(3)Cd(NCS)(4)(H(2)tea)(Htea)(3)].3CH(3)OH () has been prepared using cadmium oxide, Reinecke's salt, ammonium thiocyanate and a methanol solution of triethanolamine (H(3)tea) in air. Crystallographic investigations reveal that the molecular structure of the complex is bas…
The electronic properties of noninteracting particles moving on a two-dimensional bricklayer lattice are investigated numerically. In particular, the influence of disorder in form of a spatially varying random magnetic flux is studied. In addition, a strong perpendicular constant magnetic field $B$ is considered. The…
This study investigates the effects of grain size on the micro backward extrusion of copper cups. An equal channel angular extrusion (ECAE) technique was applied to refine the grain size in copper. Commercial available copper was annealed, deformed by six-pass ECAE at room temperature and then heat treated to obtain a…
Abstract Ga 2 O 3 /SnO 2 coaxial nanowires were synthesized by thermal evaporation of GaN powders and then atomic layer deposition of SnO 2 . Transmission electron microscopy (TEM) and X‐ray diffraction (XRD) analysis results indicate that the Ga 2 O 3 cores and the SnO 2 shells of the coaxial nanowires after thermal…
Metal oxide fine particles are widely used in industrial applications as catalysts, pigments and so on. In this work, titanium dioxide (TiO2) nanoparticles were synthesised by controlled hydrolysis of titanium alkoxide in presence of a linear polysaccharide (1–3 linked β-d-galactapyranose and 1, 4 linked 3, 6 anyhdro-…
Superplastic deformation of a fully dense TZ3Y material, having a starting grain size around 135–145 nm and depleted of any amorphous phase at grain boundaries, has been investigated using compressive creep tests in air in the temperature range of 1100°–1300°C and the real stress range of 50–100 MPa. The key parameter…
It is known that the electro-optical behaviour of polymer-dispersed liquid crystals depends on the separation of the polymer and liquid crystal phases. The morphology of the liquid crystal domains depends on the nature of the chemical and physical processes occurring during domain formation. This work discusses the tw…
The synthesis of a family of alkyl 5-(4-hexyloxyphenyl)thieno[3,2-b]thiophene-2-carboxylate liquid crystals is described. The synthetic methodology utilised includes a Fiesselmann synthesis of the thieno[3,2-b]thiophene core, and the first report of a completely regioselective α-bromination of the resulting thieno[3,2…