Materials Literature
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The rates of the dehydrogenation of the sodium alanates NaAlH 4 and Na 3 AlH 6 doped with 2 mol % Ti or Zr have been measured over the temperature range 363−423 K. NaAlH 4 and Na 3 AlH 6 undergo dehydrogenation at equal rates upon direct doping with titanium. However, Na 3 AlH 6 arising from the dehydrogenation of Ti-…
Azobenzene-conjugated mononuclear and dinuclear terpyridyl complexes of Co(II), Co(III), and Fe(II) were synthesized, and their photoisomerization behavior was investigated. Co(II) and Co(III) complexes, [tpyCo(tpy-AB)]X(n) and [(Cotpy)(2)(tpy-AB-tpy)]X(n) (tpy-AB = C(15)N(3)H(10)-C(6)H(4)-N=NC(6)H(5), tpy-AB-tpy = C(…
This paper presents a study of the damage production in yttria-stabilized cubic zirconia single crystals irradiated with medium-energy (from 30 to 450 keV) heavy ions (from He to Cs). The disorder created in the two sublattices (Zr4+ and O2−) of the crystals and the lattice sites of heavy ions were determined as a fun…
The present work describes the fabrication, characterization, and optimization of NH 2 -derivatized polymer coatings prepared by pulsed-plasma polymerization for applications as adhesion layers in DNA immobilization. Fourier transform infrared spectroscopy and surface plasmon resonance spectroscopy were used to study…
Hydrogen storage in new nano-structured carbonic materials is a topic for lively discussion. The measured storage capacities of these materials, which have been announced in the literature during the last ten years are spread over an enormous range from about 0.1 wt% up to 67 wt%. This paper will give a report on the…
The protein cage of the 12-subunit ferritin-like protein from Listeria innocua has been utilized as a size and shape constrained reaction environment for the synthesis of two cobalt oxide minerals, Co(3)O(4) and Co(O)OH. Reaction of Co(II) with H(2)O(2) at pH 8.5 under either elevated temperature (65 degrees C) or amb…
We have analyzed magnetization measurements in a series of composition-related Ni-Mn-Ga shape-memory alloys. It is shown that the magnetocaloric effect in the vicinity of the martensitic transition mainly originates from two different contributions: (i) magnetostructural coupling on the mesoscopic scale between the ma…
We present experimental and theoretical results on intrusion-extrusion cycles of water in hydrophobic mesoporous materials, characterized by independent cylindrical pores. The intrusion, which takes place above the bulk saturation pressure, can be well described using a macroscopic capillary model. Once the material i…
We present an all-electron study of the dynamical density-response function of hexagonal close-packed transition metals Sc and Ti. We elucidate various aspects of the interplay between the crystal structure and the electron dynamics by investigating the loss function, and the associated dielectric function, for wave-v…
We report experiments investigating the behaviour of micron-scale fluid droplets jetted onto surfaces patterned with lyophobic and lyophilic stripes. The final droplet shape depends on the droplet size relative to that of the stripes. In particular when the droplet radius is of the same order as the stripe width, the…
Chitosan, a hydrophilic biopolymer industrially obtained by N-deacetylation of chitin, can be applied as an antimicrobial agent. The current review of 129 references describes the biological activity of several chitosan derivatives and the modes of action that have been postulated in the literature. It highlights the…
Abstract Syndiotactic polystyrene (sPS) samples melt‐crystallized into neat α″‐ hexagonal and β′‐orthorhombic modifications were prepared at various temperatures thoroughly for extensive morphological studies. The lamellar morphologies of the as‐prepared sPS samples were investigated with small‐angle X‐ray scattering…
We present a microscopic theory of carrier-induced ferrimagnetism in metallic double perovskite compounds such as ${\mathrm{Sr}}_{2}{\mathrm{FeMoO}}_{6}$ and ${\mathrm{Sr}}_{2}{\mathrm{FeReO}}_{6}$ which have recently attracted intense interest for their possible applications to magnetotransport devices. The theory is…
In order to pursue men's suit wear comfort, the basic data on an accurate men's suit comfort analysis with clothing pressure is required. Therefore, in such investigation, it is difficult to find out ideal persons as test subjects. In the measuring experiments, we used dummies designed for resuscitation practice to ob…
Abstract Functionally graded polyurethane elastomers (FGPUEs) were prepared with two molds fixed at different temperatures (30 and 150 °C). The effects of the molar ratio of the curing agent (60/40, 75/25, or 97/3 1,4‐butane diol/1,1,1‐trimethylol propane) and the molecular weight of the polymer glycol (number‐average…
Introduction. Scope. Brief historical notes with references to the literature. Theory of stability. Design philosophy. Design procedure. Requirements on the load carrying structure. The design analysis process. Loads and load factors. Resistance and resistance factors. Design criteria. Design by testing. Elementary ca…
We study the low-temperature transport properties of clean one-dimensional spin-$\frac{1}{2}$ chains coupled to phonons. Due to the presence of approximate conservation laws, the heat current decays very slowly giving rise to an exponentially large heat conductivity, $\ensuremath{\kappa}\ensuremath{\sim}{e}^{{T}^{*}/T…
Based on previously computed parameters for the electron-phonon couplings and the Coulomb exchange, we compute and classify the static Jahn-Teller distortions, i.e. the minima of the lowest adiabatic potential energy surface, of C60(n+), for all values of charge 1 <= n <= 9 and spin. We compute the intra-band electron…
We have studied the effect of irreversibility induced by repeated thermal cycles on the electric transport and magnetization of polycrystalline samples of La0.5Ca0.5MnO3 and La0.325Pr0.3Ca0.375MnO3. An increase of the resistivity and a decrease of the magnetization at different temperature ranges after cycling is obta…
The complex lanthanide doping of electron manganites results in enhancement of various phase separation effects in physical properties of these compounds. Selecting Ca0.8Sm0.16Nd0.04MnO3 as a model case we show that the first order structural phase transition from paramagnetic semi-metallic phase into anti-ferromagnet…