Materials Literature
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Intense red phosphors, AgGd 0.95 Eu 0.05 ( WO 4 ) 2 − x ( MoO 4 ) x ( x = 0 − 2 ) have been synthesized and characterized by powder X-ray diffraction (XRD) and photoluminescence. Powder XRD results reveal a phase transition from monoclinic to tetragonal structure at x ⩾ 0.5 . All compositions with Eu 3 + show red emis…
We use optical darkfield micro-spectroscopy to characterize the plasmon resonance of individual silver nanoparticles in the presence of a substrate. The optical system permits multiple individual nanoparticles to be identified visually for simultaneous spectroscopic study. For silver particles bound to a silanated gla…
Micrometre-sized water droplets were hyperquenched on a solid substrate held at selected temperatures between 150 and 77 K. These samples were characterized by differential scanning calorimetry (DSC) and X-ray diffraction. 140 K is the upper temperature limit to obtain mainly amorphous samples on deposition within 16-…
Silicatein immobilised on self-assembled polymer layers using a histidine-tag chelating anchor group retains its hydrolytical activity for the formation of biosilica, and catalyses the formation of layered arrangements of biotitania and biozirconia.
A planar near-field magnetoinductive lens operating in the microwave range is presented. Theproposed device consists of two parallel planar arrays of metallic broadside coupledsBCdsplit-ringresonatorssSRRsd, or BC-SRRs. The power coming from a point-like source located in front of thelens is focused into a receiver lo…
Even though the electrochemical oxygen reduction reaction at mixed conducting oxide electrodes is highly important for several applications of solid electrolytes a thorough discussion of the kinetics of electron and ion transfer steps at the corresponding electrode surface is not available yet. A straightforward appli…
We have experimentally verified that the emission of visible light from dye doped polymers can be enhanced with the use of surface plasmon coupling. By matching the plasmon frequency of a thin unpatterned silver film to the emission of a dye doped polymer deposited onto this metal surface, we have observed a eleven-fo…
The thermal conductivities kappa of the crystalline phases and amorphous solid states of water as well as clathrate hydrates are summarized and discussed. In particular, this review concerns the unusual temperature T and pressure p behaviors of kappa for some phases and states, which include glass-like K for crystalli…
New possibilities to design artificial magnetic materials for microwave frequencies are considered. Such composites can be used in microwave engineering at frequencies where no natural lowloss magnetic materials are available. A new magnetic particle (metasolenoid) formed by a stack of many parallel and very closely s…
Beta-1,3-glucan polysaccharides have triple-stranded helical structures whose sense and pitch are comparable to those of polynucleotides. We recently revealed that the beta-1,3-glucans could interact with certain polynucleotides to form triple-stranded and helical macromolecular complexes consisting of two polysacchar…
Abstract The following unified equation has been elaborated in the present paper, to describe the viscosity of all liquid metals as a function of temperature: ηi = A ⋅M1/2iV2/3i⋅ T1/2⋅ exp(B⋅Tm,iT) with ηi, Mi, Vi, Tm, i being the dynamic viscosity, atomic mass, molar volume and melting point of the given metal i, and…
Bulk expansion of the anode upon oxidation is considered to be responsible for the lack of redox stability in high-temperature solid oxide fuel cells (SOFCs). The bulk expansion of nickel–yttria stabilized zirconia (YSZ) anode materials was measured by dilatometry as a function of sample geometry, ceramic component, t…
Abstract It has been nearly 30 years since two of the most influential books were published on infrared spectroscopy on minerals by Farmer and on clay minerals in particular by van der Marel and Beutelspacher. Since then much has changed in terms of technology, such as the development of Fourier Transform infrared spe…
Super-hydrophobic and super-hydrophilic gold surfaces were prepared by modifying microstructured gold surfaces with thiols. The perfluorodecanethiol (PFDT)-modified rough gold surface was converted from super-hydrophobic (water contact angle = 150–160°) to super-hydrophilic (0–10°) by photocatalytic remote oxidation u…
Abstract A new approach for the preparation of hydrophilic and biocompatible porous scaffolds is described. The procedure involves the derivatization of a biopolymer by the introduction of vinylic moieties, formation of a high‐internal‐phase oil‐in‐water emulsion, and its subsequent polymerization. The ensuing materia…
The current ITER design employs beryllium, carbon fiber reinforced composite and tungsten as plasma facing materials. Since these materials are exposed to high heat fluxes during the operation, it is essential to perform high heat flux tests for R&D of ITER components. Static heat loads corresponding to cycling loads…
Template pre-organized oligopeptides were conjugated to poly(ethylene oxide) chains yielding peptide-polymer-building blocks that self assemble into fiber-like nanostructures having a maximum length in the range of a micrometer.
Composites of (LSM) and yttria-stabilized zirconia (YSZ) were prepared by impregnating porous YSZ with salts of Sr, La, and Mn to 40 wt % LSM. The effect of calcination temperature on cathode performance at 973 K was then studied using both symmetric cells and solid oxide fuel cells (SOFCs). Following calcination at 1…
This investigation details relatively short-term ( 500 h ) performance characteristics (in particular cathode conditioning and degradation) of anode-supported SOFCs utilizing La ( Sr ) Fe O 3 cathodes with platinum, silver, or gold current collectors. Conditioning or degradation characteristics were found to be highly…
Polygonal gold nanoplates are generated in situ in poly(vinyl alcohol) film through thermal treatment, the polymer serving as the reducing agent and stabilizer for the nanoparticle formation and enforcing preferential orientation of the plates. The rare pentagonal as well as the more commonly observed hexagonal, trian…