Materials Literature
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Rings and hexagonal arrays of nanocrystals (see Figure), where the structures correspond to the micrometer wavelength range, are shown to be produced by controlling the deposition conditions. Silver nanocrystals deposited from hexane in air form ring structures and the same nanocrystals in other solvents or in hexane…
Semiconductivity in La‐doped BaTiO 3 ceramics after high‐temperature firing, e.g., 1350°C in air, is attributed to oxygen nonstoichiometry. In more heavily doped compositions, the observed resistivity rise is attributed to surface oxidation of the grains during cooling.
Abstract This study focuses on the conformational characterization of differently processed Bombyx mori silk fibroin samples by Raman spectroscopy. The Raman spectra of silk fibroin film and liquid silk are discussed in comparison with those of the crystalline fractions of Bombyx mori silk fibroin (Cp, chymotryptic pr…
We survey recent studies and present new data on the growth, interactions, structure and chemistry of gold deposited on TiO 2 (110) surfaces. The noble metal Au on TiO 2 (110) is a model system for weak interaction of a metal with an oxide substrate; it is also of interest because Au on TiO 2 has unusually high activi…
The temperature dependence of the thermodynamic and dynamical properties of liquid water using the polarizable fluctuating charge (FQ) model is presented. The properties of ice Ih, both for a perfect lattice with no thermal disorder and at a temperature of 273 K, are also presented. In contrast to nonpolarizable model…
Fillers appear during the early grammaticalization process, roughly between the one- or two-word phase and the earliest grammar, in a variety of languages. Peters accurately points out there have been theoretical and methodological difficulties when trying to integrate the filler phenomenon in language acquisition the…
The melt rheology of a low Tg tin phosphate glass [Pglass] has been studied with oscillatory shear flow experiments to accelerate efforts to melt process the glass with different organic polymers. The w dependence of the complex viscosity η* of the Pglass is easily predicted by a modified Rouse model with two relaxati…
The different methods that can be used for measuring the effect of a hydrostatic pressure on the viscosity of polymer melts are evaluated. A linear low-density polyethylene is chosen as test material, as it can be expected to have a small pressure dependency. Special attention is given to methods employing capillary r…
Laboratory-scale experiments were carried out to explore the influence of the composition of the fat phase on mechanical and rheological properties of processed model cheeses. Cheeses made from caseinates, emulsifying salts and a milk fat fraction liquid at 24°C, which was achieved by thermal separation, showed much l…
Recent developments in conjugated-polymer-based photovoltaic elements are reviewed. The photophysics of such photoactive devices is based on the photo-induced charge transfer from donor-type semiconducting conjugated polymers to acceptor-type conjugated polymers or acceptor molecules such as Buckminsterfullerene, C60.…
Analogies between dissipative particle dynamics (DPD) and stochastic dynamics are exploited to derive a new algorithm for DPD with an improved temperature control, without recursion or tuneable parameters.
Abstract Imogolite is a tubular aluminosilicate which is common in Andosols and Spodosols. The high pH at point-of-zero charge at the outer parts of the tube and the anomalously high chloride adsorption of imogolite suggested that there may be structural charge associated with this mineral. The structural charge may a…
We present a systematic study of the ferromagnetic transition induced by the holes in nitrogen doped ${\mathrm{Zn}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x}\mathrm{Te}$ epitaxial layers, with particular emphasis on the values of the Curie-Weiss temperature as a function of the carrier and spin concentrations. The data are…
β‐Si 3 N 4 ceramics sintered with a series of rare‐earth (RE = La, Nd, Gd, Y, Yb and Sc) oxide additives were fabricated by hot pressing and subsequent annealing. Their microstructures, lattice oxygen contents, and thermal conductivities were evaluated. Mean grain size increased, while lattice oxygen content decreased…
We report an efficient glass-ceramic fiber laser and show that its slope efficiency (~30%) is not compromised by the presence of Nd-doped fluoride crystals embedded within the core of the single-mode optical fiber. In contrast, the spectroscopy (fluorescence and gain spectrum) of the Nd(3+) ions is dramatically change…