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。
Zinc oxide (ZnO) nanorods, with different aspect ratios, were synthesised at room temperature via an inexpensive physico-chemical route. The source material was a mixture of zinc acetate dihydrate [ Zn (CH3 COO)2 2H2O] , cetyl-trimethyl ammonium bromide [ C19H42BrN] , and sodium hydroxide [NaOH]. The length of the nan…
We report a physical mechanism leading to high phase retardation in slanted photonic nanostructures. The phenomenon is based on the waveguiding of the transverse electric polarization component inside the slanted pillars, while the transverse magnetic component is not guided. Such a mechanism leads to very high phase…
Abstract SF 6 gas is widely employed in medium‐voltage switchgear because of its high insulation reliability and down‐sizing ability. However, SF 6 gas was placed on the list of greenhouse gases under the Kyoto Protocol in 1997. Since then, research on low‐SF 6 or SF 6 ‐free insulation has been carried out actively. T…
Diamond, with its low atomic number and high thermal conductivity, is being assessed as a possible plasma facing material within a fusion reactor. Molecular dynamics simulations using the AIREBO potential were performed simulating the exposure of diamond to a plasma in conditions similar to those of the divertor regio…
Scanning acoustic microscopy (SAM) was used to investigate disbonding, delamination and blister formation in polymer coatings for different layer structures and initial defect depths during exposure to a corrosive environment. The time evolution of disbonding and blister initiation and their growth was investigated by…
Abstract Granular GaAs:(Mn,Ga)As films were prepared by annealing the Ga 0.985 Mn 0.015 As/GaAs layers at 500 °C or 600 °C. It is commonly accepted that this processing should result in the formation of cubic or hexagonal MnAs clusters, respectively. We demonstrate that such a priori assumption is not justified. If in…
Abstract Delayed cracking in meta‐stable austenitic stainless steels AISI 304 and AISI 301 has been investigated by deep drawing test in this study. Specimens from both steels were deformed at different drawing ratios, forming temperatures and hydrogen pre‐charged conditions. The strain, martensitic fraction and resid…
Abstract Dimeric [Ti(O i Pr) 2 (benzaldoximate) 2 ] 2 was obtained upon reaction of titanium isopropoxide with two molar equivalents of benzaldehyde ( E )‐ or ( Z )‐oxime or m ‐anisaldoxime. Two isomers were formed differing by the mutual orientation of the oximate ligands. Reaction with perillaldoxime or trans ‐cinna…
A new, simple, two-step method is introduced for preparing hollow particles that are both pH-responsive and redox sensitive. Hollow poly(methyl methacrylate-co-methacrylic acid) particles swell at moderate pH values, form gels in concentrated dispersions and can be disassembled by adding reducing agents.
Scanning Kelvin probe microscopy (SKPM) is applied to experimentally understand the asymmetric behaviors in hole and electron transportation regions in graphene field-effect transistors (FETs). With gate modulation, the transition from p-p-p to p-n-p (for a Ag or Pd source/drain junction with graphene) or from n-p-n t…
As a consequent work of the two-dimensional (2D) dendritic metamaterial which has been systematically studied in our previous work, a model of three-dimensional (3D) sphere-rod shaped structure is presented. Based on Drude model of the dielectric function of silver in the visible region, the parametric curves of elect…
The crystal chemistry of a pegmatitic Fe-bearing muscovite (with FeO ~5.1 wt%) from Val di Crana, Arvogno (Verbania, Nothern Italy) has been investigated by means of wavelength-dispersive X-ray spectroscopy and constant-wavelength [λ = 0.9462(2) Å] single-crystal neutron diffraction at 295 and 20 K (2θ max = 90°). The…
X-ray absorption near the iron K edge (XANES) was used to investigate the characteristics of temperature-induced low-spin-to-high-spin change (SC) in metallo-supramolecular polyelectrolyte amphiphile complexes (PAC) containing FeN(6) octahedra attached to two or six amphiphilic molecules. Compared to the typical spin-…
Vorliebe für O2: Eine neue CO2-feste und cobaltfreie Zweiphasenmembran zur Sauerstoffabtrennung aus Luft (siehe Schema) besteht aus 40 Gew.-% NiFe2O4 und 60 Gew.-% Ce0.9Gd0.1O2−δ. Mit reinem CO2 als Spülgas zeigt die Membran bei 1000 °C über 100 Stunden einen konstanten Sauerstoff-Fluss.
Abstract Low‐MW urethanes were investigated to control domain formation as well as inhibiting cleavage reactions during vapor phase polymerization of PEDOT. A diurethanediol (DUDO) was identified as a highly efficient mediator for the process, resulting in PEDOT films exceeding conductivities of 1 000 S · cm −1 . All…
A new composting technology of waste with high fat content was developed in JSC “Biocentras”. The composting technology of fat‐contaminated waste is based on the use of fat‐oxidizing microorganisms. Developed technology is commended for cleaner production/pollution prevention approach as well as meets strict environme…
Corresponding to the humidity, a transparent and metallically conductive polycarbonate thin film, at the surface of which micro-crystals of (bis(ethylenedioxy)tetrathiafulvalene)2Br(H2O)3 were embedded, showed quasi-reversible modulation of inter-conducting-layer distance in the micro-crystals and the surface resistan…
Friedliche Koexistenz: Brønsted-Säuren und -Basen wurden an verschiedenen Oberflächen eines mesoporösen Siliciumoxid-Nanopartikels fixiert. Die innere Oberfläche wurde durch Cokondensation funktionalisiert und die äußere durch der Synthese nachgeschaltetes Aufpfropfen. Mit dem difunktionalisierten Nanopartikel gelang…
Similar to alane in alanates, borane species are assumed to be the mass transport intermediate in the hydrogen storage reaction MH + B + 3 / 2 H 2 ⇔ MBH 4 with M = Li and Na. One possible substep of this reaction is the interaction of diborane with the alkali hydride. In this paper, we unravel the synthesis mechanism…
The Fe(3)O(4)-Ca(3)(PO(4))(2) core-shell nanoparticles were prepared by one-pot non-aqueous nanoemulsion with the assistance of a biocompatible triblock copolymer, poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (PEO-PPO-PEO), integrating the magnetic properties of Fe(3)O(4) and the bioa…