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。
Poly(o-phenylenediamine) films were electrochemically prepared on gold electrodes from the corresponding monomer in an aqueous solution at a constant potential. The polymeric films prepared in this one-step procedure were found to be thin and insoluble in the aqueous solution. Cyclic and differential pulse voltammetri…
The doubly doped (Bi3+ and Eu3+) GdVO4 powder is synthesized by the combustion of aqueous solutions containing metal nitrate (GdNO3), ammonium nitrate (NH4NO3), ammonium metavanadate (NH4VO3) and 3-methyl-5-pyrazole-5-one (3MP5O). The powders are mixed thoroughly by mechanical crushing for 1 h. The aqueous solution co…
The optical threshold energies for photoionization of several different electron traps in Al2O3 have been determined using photoconductivity and optically stimulated luminescence (OSL). Stimulation of the photoconductivity and OSL is observed over a wide range of optical energies. The localized trapping states giving…
The static fracture toughness of poly(ethylene terephthalate) (PET) melt blended with a modifier containing glycidyl methacrylate (GMA)-grafted ethylene-propylene rubber and homopolymerized GMA was studied on injection molded specimens by adopting the essential work of fracture (EWF) method. It was found that the esse…
Poly(ethylene terephthalate) (PET) and poly(ethylene isophthalate) (PEI) homopolymers were synthesized by the two-step melt polycondensation process of ethylene glycol (EG) with dimethyl terephthalate (DMT) and/or dimethyl isophthalate (DMI), respectively. Nine copolymers of the above three monomers were also synthesi…
Composition dependence of martensitic transformation and ferromagnetic transformation behavior has been investigated for Ni–Mn–Ga ferromagnetic shape memory alloys in a polycrystalline state. DSC measurements were performed to determine the transformation temperatures. Magnetic properties were studied by VSM. It was r…
We have investigated the charge/orbital ordering of the 50% hole-doped bilayer manganite ${\mathrm{LaSr}}_{2}{\mathrm{Mn}}_{2}{\mathrm{O}}_{7}$ by means of high-energy x-ray diffraction and also neutron diffraction on a single crystal. The temperature variation of the superlattice reflections corresponding to the prop…
Since chemical mechanical polishing for damascene processes producing copper interconnections is a wet‐chemical treatment, corrosion control is indispensable. In addition to ordinary corrosion due to chemical and galvanic reactions with slurries, a new type of corrosion, pattern‐specific corrosion, was found. It was c…
We report magnetic studies of $\mathrm{Fe}(\mathrm{TCNE}{)}_{2}\ensuremath{\cdot}x({\mathrm{CH}}_{2}{\mathrm{Cl}}_{2}),$ a member of the family of high-${T}_{c}$ molecule-based magnets, $M(\mathrm{TCNE}{)}_{x}\ensuremath{\cdot}y(\mathrm{solvent})$ $(M=\mathrm{V},$ Mn, TCNE=tetracyanoethelyne). Based on extensive stati…
A tripodal alkythiolate ligand has been assembled on gold nanoparticles, which upon metathesis polymerization and particle etching, yields crosslinked spherical hollow polymer capsules.
The magnetic properties of the ordered perovskite compound Ba2NdRuO6 are reported. Powder neutron diffraction measurements were performed at 100, 35 and 7 K to determine its crystal structure and magnetic properties. Refinement of the data collected at 100 K showed that this compound has monoclinic symmetry, space gro…
The results of a study of the effect of pH on the photophysics and photochemistry of di-sulphonated aluminum phthalocyanine (AlPcS2) in aqueous solution are presented. The pH dependence of the triplet quantum yield, fluorescence quantum yield, singlet-oxygen quantum yield, triplet lifetime, fluorescence lifetime and a…
Oxygen permeation and faradaic efficiency measurements of perovskite solid solutions Sr0.97Ti1 − x − yFexMgyO3 − δ (x = 0.20–0.40; y = 0–0.10) at 973–1223 K showed that the oxygen transport at membrane thicknesses below 2 mm is limited by both bulk ionic conductivity and the surface exchange kinetics. Incorporation of…
Before a biomaterial can be applied in the clinic, biocompatibility must be tested in in vivo models, by monitoring the foreign body reaction. In this study, we compared the foreign body reaction (FBR) to the biodegradable biomaterial hexamethylenediisocyanate crosslinked dermal sheep collagen (HDSC) between several s…
Both cardiovascular implants and therapeutic interventions on native arteries fail due to biologic responses occurring at the blood/prosthesis/arterial wall and tissue/prosthesis/arterial wall interfaces, resulting in the failure modes of thrombosis and myointimal hyperplasia. Systemic pharmacologic approaches includi…
PbO, ZrO 2 , TiO 2 and Pb(Zr x Ti 1- x )O 3 (PZT) films were prepared by metalorganic chemical vapor deposition (MOCVD) using Pb(C 11 H 19 O 2 ) 2 , Zr(O·t-C 4 H 9 ) 4 , Ti(O·i-C 3 H 7 ) 4 and O 2 as source materials. The deposition rates of the constituent metals of Pb(Zr x Ti 1- x )O 3 (PZT) film were investigated a…
The general form of the X-ray susceptibility tensor near absorption edges is found when several anisotropic factors, such as the anisotropy of local atomic environment, magnetic ordering and orbital ordering, simultaneously exist in a crystal. Different phenomenological approaches are used to obtain the explicit form…
The structural development during the melt spinning and subsequent annealing of polybutene-1 fibers was studied with in situ wide-angle X-ray scattering techniques. The online spinning apparatus consisted of a vertically translating extruder that allowed different distances from the spinneret to the stationary X-ray b…
Pt–Ru nanoparticles (1.6 nm) were supported on carbon nanotubes (200 nm diameter, 8–10 µm length) obtained by the carbonisation of polypyrrole on an alumina membrane.
Recently, much interest has been generated by colloidal drug delivery systems such as nanocapsules because of the possibilities for controlled release, increased drug efficacy, and reduced toxicity after parenteral administration. Nanocapsules of poly-epsilon-caprolactone and Eudragit S90 were prepared. However, these…