Materials Literature
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External electric field effects on absorption and photoluminescence (PL) spectra of colloidal CdTe nanoparticles have been measured in a poly(vinyl alcohol) (PVA) film. The electroabsorption spectra across the first exciton band are similar in shape to the second derivative of the absorption spectra, indicating the en…
Single-molecule photophysical properties of two families of linear porphyrin arrays have been investigated by single-molecule fluorescence detection techniques. Butadiyne-linked arrays (Z(N)B) with extensive π-conjugation perform as photostable one-quantum systems. This demonstration has been suggested by the long-las…
The air-sintering characteristics and electrical conductivity of (Sr1−xLax)TiO3 perovskites (0 ≤ x ≤ 0.3) synthesized by the citric acid method were evaluated in terms of their use as interconnect materials in solid oxide fuel cells. A single perovskite phase of (Sr0.8La0.2)TiO3 powder was formed at 800 °C. In this po…
Purpose The purpose of this paper is to study properties of intumescent coatings based on a silicone‐epoxy hybrid resin (with an aminosilane as hardener). In the first part of this study, fire‐resistance behaviour of the intumescent coating based on silicone‐epoxy resin containing intumescent additives is evaluated. T…
Abstract: Previous research on the ‘Characterization of the global deformation behaviour of engineering plastics rolls’ investigated the deformation behaviour of loaded Polyoxymethylene (POM) and Polyetheretherketone (PEEK) rolls regarding global considerations only. This study concentrates on the analysis of the loca…
In order to improve the precision in prediction of mechanical properties of multi-walled carbon nanotubes (MWNTs)/epoxy composites, the effect of waviness of nanotubes is considered by applying a correction factor to a modified Halpin–Tsai equation. Data validation was carried out through the comparison of theoretical…
We report photoemission experiments revealing the full valence electron spectral function of Ce adatoms on Ag(111), W(110), and Rh(111) surfaces. A transfer of Ce 4f spectral weight from the ionization peak towards the Fermi level is demonstrated upon changing the substrate from Ag(111) to Rh(111). In the intermediate…
The effect of O implantation in crystalline Ge on the density of native point defects has been investigated through transmission electron microscopy and B diffusion experiments. Annealing at 650 \ifmmode^\circ\else\textdegree\fi{}C following O implants produces a band of defects (\ensuremath{\sim}5--10 nm), compatible…
(Fe 66.9 Co 33.1 ) 86.8 Sm 13.2 (FeCoSm) thin films with thickness from 110 to 330 nm are fabricated on silicon (1 1 1) substrates by magnetron co-sputtering under ambient condition. The as-deposited FeCoSm thin film is amorphous when the thickness is less than 150 nm. When the thickness increases further, the film be…
Unter Strom gesetzt: Eine auf elektrische Felder reagierende Steuereinheit (siehe Bild), die bei großflächiger und millimeterdicker unidirektionaler Orientierung columnar organisierter π-konjugierter flüssigkristalliner Moleküle funktioniert, wurde entwickelt. In den Säulen sind die Einheiten über Wasserstoffbrücken m…
In this paper composite supports for solid oxide fuel cells were fabricated and evaluated. Substrates were composed of stainless steel and yttria stabilized zirconia (YSZ) powders mixed in different volume ratios. Their sintering behavior (linear shrinkage, resulting porosity) and high temperature properties (oxidatio…
The self-assembly behavior of ABA coil-rod-coil triblock copolymers in a selective solvent was studied by a Brownian molecular dynamics simulation method. It was found that the rod midblock plays an important role in the self-assembly of the copolymers. With a decrease in the segregation strength, ɛ(RR), of rod pairs,…
Electrical bistable behaviour was demonstrated in memory devices based on n-type FeS 2 nanocrystals (NCs) embedded in a p-type poly(3-hexylthiophene) (P3HT) matrix. An organic/inorganic hybrid non-volatile memory device with a type-II band alignment, fabricated by a spin-coating process, exhibited electrical bistable…
To support a new interpretation of the origin of the dynamic heterogeneity observed pervasively in fragile liquids as they approach their glass transition temperatures T(g), we demonstrate that the introduction of ~2 nm structural inhomogeneities into a homogeneous glass former leads to a decoupling of diffusion from…
Abstract The effects of structural changes induced by physical aging (namely, enthalpy relaxation) on the biodegradability of PLGA films at physiological temperature (37 °C) is investigated. The degradation rate and behavior of aged and non‐aged PLGA films are compared, and the effects of physical aging on the biodegr…
We report that a specific realization of Schwarz's triply periodic hexagonal minimal surface is isotropic with respect to the Doi-Ohta interface tensor and simultaneously has minimal packing and stretching frustration similar to those of the commonly found cubic bicontinuous mesophases. This hexagonal surface, of symm…
Poly(vinyl chloride)(PVC)/halloysite nanotubes (HNTs) nanocomposites were prepared by melt blending. The effects of HNT content on the mechanical properties, morphology, and rheological properties of the nanocomposites were investigated. The results showed that HNTs were effective in toughening and reinforcing PVC nan…
UNLABELLED: Starch isolated from macho banana was oxidized by using 2.5% and 3.5% (w/w) of sodium hypochlorite. Native and oxidized starches with glycerol were processed using a conical twin screw extruder to obtain thermoplastic laminates or sheets, which were partially characterized. Oxidized banana starches present…
Native defects in lithium amide (LiNH${}_{2}$), a promising candidate for hydrogen storage, are investigated by first-principles calculations based on density functional theory. We examine the structural properties and formation energies of H-, Li-, and N-related defects in all possible states. We find that the domina…
Part of DC arcs may levitate from the insulators' surface to form air-gap arcs in the process of insulator's flashover, especially in the low air pressure. The air-gap arcs can cause the bridging between ribs (or sheds) of insulators easily, and the U–I characteristics of air-gap arcs and surface arcs are di…