Materials Literature
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Materials that exhibit considerable electronic conductivity and good stability in fuel atmospheres are interesting candidates to replace of Ni in its current collecting role in Ni-cermet solid oxide fuel cell (SOFC) anodes. The Nb1-xTixO2 rutile system offers particularly high electronic conductivity and has good chem…
Nowadays there is much interest in thin polymer \nfilms due to their importance in science and technology. \nStudies on Tg in thin polymer films have revealed that \nit is dependent on film thickness and that such dependence \nincreases with decreasing film thickness. As \nfor the case where the in…
The processing conditions, microstructure, and dielectric properties of strontium bismuth niobate vanadate ceramics, SrBi 2 (V x Nb 1− x ) 2 O 9 (SBVN, with 0 ≤ x ≤ 0.3), were systematically studied. A relative density of >90% was obtained for all the samples using a two‐step sintering process. XRD showed that a si…
Laminates consisting of two different nanocrystalline zirconia materials (undoped and 3Y‐TZP doped) were sintered, and their densification and curvature were quantified using optical dilatometry. The experimental results agreed well with a continuum‐mechanical description for the cosintering of laminates with diffusio…
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Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text V. Yu. Zerov and V. G. Malyarov , "Heat-sensitive materials for uncooled microbolometer arrays," J. Opt. Technol. 68, 939- (2001) Export Citation BibTe…
Avian eggshells are natural composite bioceramics containing organic and inorganic phases. The occurrence and role of particular collagens and proteoglycans in the eggshell and their pattern of secretion by the oviduct is discussed. While type X collagen, the main constituent of the shell membranes, functions to inhib…
We have systematically investigated the effect of anharmonicity on the equilibrium properties of systems with a complex potential energy surface. Anharmonicities are modeled by the temperature dependence of the harmonic frequencies {νi} near a stationary point of the PES. The low-temperature behavior is described by a…
A new coupled bipyridinium-based dye system showing excellent daylight, long term, and cycle stability is presented here. Cells with the coupled system show a stable switching performance for more than 4000 h. Deliberate matching of the counter anion/dye system with the solution allows compensation of the density chan…
Using a serial bilayer model we show that heterogeneous ferroelectric systems may exhibit substantial Maxwell–Wagner piezoelectric relaxation. The relaxation has its origin in the coupling of the dielectric and piezoelectric properties. The model predicts both retardation (positive phase angle and counterclockwise cha…
In the last two decades, progress has been made in the modification of the properties of clay materials in order to produce new clay nanocomposite products that can be used for controlling soil environmental quality. Pillared organoclays and nanocomposites constitute a novel class of materials, prepared by propping ap…
Identification of diatom frustules, a vital step during ecological analyses, is greatly influenced by the magnification at which samples are examined. The striking differences between Light Microscopy (LM) and Scanning Electron Microscopy (SEM) reveal inconsistencies in the identification of diatoms at low magnificati…
Long-chain branched (LCB) poly(propylene)s (PP) are synthesized by the incorporation of pre-formed, vinyl-terminated macromonomers using metallocene catalysts. LCB-PP polymers made with isotactic PP macromonomers are characterized by means of multi-angle laser light scattering and extensional viscosimetry. The LCB pol…
The world's oceans cover 70% of the surface of our planet. The photosynthetic organisms living within its photic zone are responsible for about one-half of global primary productivity. The most successful organisms are thought to be photosynthetic prokaryotes (cyanobacteria and prochlorophytes) and a class of eukaryot…
Although fuel cells work efficiently with hydrogen as a fuel there are still some major problems related to hydrogen availability and acceptability. In particular, it is still extremely difficult to obtain clean/renewable hydrogen. In the short to medium term future, the only realistic fuels for fuel cells are hydroca…
Cerium (and aluminium) oxide layers were formed on magnesium and its alloys (AZ91) by chemical surface treatment with or without subsequent annealing. The corrosion behaviour modifications provided by the formation of these surface films were studied by means of different electrochemical and surface analysis technique…
A model to represent creep and recovery in polymeric materials is described. This is based on the Weibull distribution function, which is commonly used for representing the failure of elements in mechanical systems. A mechanical representation of viscoelasticity is discussed, in which viscoelastic response is describe…
A new kind of photochromic composite film is prepared by depositing gold nanoparticles onto the surface of MoO 3 thin film. It is found that gold nanoparticles can improve the UV-light coloration performance of the MoO 3 thin film. X-ray photoelectron spectroscopy and surface photovoltage spectroscopy measurements ind…
Abstract The transformation of kaolinite to halloysite-7 Å was identified in the kaolin deposit of São Vicente de Pereira (SVP), using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and transmission electron microscopy (TEM). Both the 02, 1̄ and 13̄, 13 reflections show changes in the XRD patt…
Summary The processes controlling the retention and release of aluminium in acid forest soils are still subject to controversy, and therefore a universal hypothesis as to what mechanisms are operating has not been firmly established. By studying the Bs horizons of Swedish and Swiss podzolized soils, and by analysing d…