Materials Literature
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A classical electrostatic polarization scheme using the additive distribution procedure has been applied to determine the static longitudinal polarizability and second hyperpolarizability of a all-trans hexatriene molecule in an infinite stretched fiber. The parameters have been derived from ab initio coupled-perturbe…
The three refractive indices of a liquid crystal that exhibits lamellar analogues of the three‐dimensional isotropic, nematic, and smectic A phases are reported as functions of temperature for the Lam‐I and Lam‐N phases. The data suggest a number of striking behaviour types. The orientational distribution of the mesog…
-based phosphors doped by were studied for use in white light emitting diodes (LEDs). Variations of excitation and emission spectra by changes in the alkaline earth ions in host lattice were studied. It was found that the system was excellent for white LED applications with excitation in the 380-465 nm region. Special…
Novel Y-junction polyaniline (PANI) nanorods and nanotubes (40–100 nm in diameter and a few micrometers in length) were selectively prepared, for the first time, using in situ self-assembly of water-soluble Fe3O4 nanoparticles coated with polyethylene glycol(5) nonylphenyl ether (NP5) and cyclodextrin (CD) as template…
The ratio of monomer and excimer emissions of a triad 1 with tetrathiafulvalene (TTF) and pyrene units could be reversibly modulated by the different oxidation states of the TTF unit. The working mechanism of this new fluorescence switch was demonstrated to be the collective result of the tunable photoinduced electron…
<title>Abstract</title> The ecology of algae associated with benthic habitats in freshwater lentic environments such as lakes and wetlands and the primary biotic and abiotic factors (i.e., nutrients, light, hydrodynamics and herbivory) affecting their productivity are reviewed. There is a growing consensus that periph…
Dendritic growth, and the formation of material microstructure in general, necessarily involves a wide range of length scales from the atomic up to sample dimensions. The phase field approach of Langer, enhanced by optimal asymptotic methods and adaptive mesh refinement, copes with this range of scales, and provides a…
Abstract Layered double hydroxides (LDHs), also known as hydrotalcite-like compounds (HTs), anionic clays, and mixed-metal layered hydroxides (MMLHs), are unusual among oxide and hydroxide materials in having large permanent positive layer charges and, consequently, large anion exchange capacities. Interest in the LDH…
Successful development of hydrogen separation membranes based on mixed ionic and electronic conductors would improve the economics of hydrogen production. The combination of high proton conductivity and good chemical stability is desirable for practical applications. In this paper, we report a new compound, BZCY6 , as…
The location of partial discharges in a power transformer can be determined based on the characteristics of the transfer function from the discharge source to the measuring terminal. Previous studies partially validated the technique using computer simulation and practical experiments based on a PD calibrator to repre…
The objective of this paper is to discuss the differences between the homogenization of a bulk metamaterial and the homogenization of a thin metamaterial slab (complex surface). To this end, we study the canonical problem of propagation of electromagnetic waves in a mesh of crossed metallic wires embedded in a dielect…
Phase equilibria of solid phases in the Co–W system were investigated using two-phase alloys and the diffusion couple technique. In addition, systematic studies of magnetic and martensitic transitions were conducted by Differential Scanning Calorimetry (DSC), Vibrating Sample Magnetomety (VSM) and dilatometric measure…
O1s binding energy measured by X-ray photoelectron spectroscopy (XPS) is candidate as a new tool to determine a new scale of Lewis basicity of oxide ions in glass. Some mathematical expressions for the basicity or XPS chemical shift, such as charge parameter and optical basicity, were compared with the experimental O1…
The electrochemical oxidation of ethylene glycol in alkaline solution was investigated using , and ultrafine gold deposited on electrodes. The ultrafine gold particles prepared in the present study were in diameter. These catalysts enhanced the activity in ethylene glycol oxidation in lower potential regions. In parti…
The self-assembly of molybdate building units in the presence of Fe(II) and V(IV) produces the first mixed-spin heterometal keplerate-type clusters displaying ferrimagnetic interactions.
This paper describes a new SMA actuator design and its application in the prosthetic hand replacing conventional servo motors which are bulky and noisy in nature. Two one-way memory SMA wires are used in the development of the actuator. The proposed actuator consists of two 0.3mm in diameter SMA wires inserted from bo…
Metathetical reactions of Na[N(iPr2PTe)2] with Group 13 metal halides produce the telluride complexes {Ga(mu-Te)[iPr2PNiPr2PTe]}2(2) and {M(mu-Te)[N(iPr2PTe)2]}3, M = In (3) and Ga (4), which contain central Ga2Te2 and M3Te3 rings, respectively.
A novel polarized light-guide plate (LGP) for the illumination of liquid crystal display is proposed in this paper. For the substrate of the LGP, stress-induced birefringence is introduced to achieve the polarization state conversion. An aluminum sub-wavelength grating (SWG) is designed on the top surface as a polariz…
Abstract We have studied reduced TiO 2 (110) surfaces by combining metastable impact electron spectroscopy (MIES) and UPS(HeI). The reduced Ti species were preparation‐induced: their number density was modified either by adsorption of K atoms or by a combined annealing/oxygen exposure procedure. The emission from the…
The high-temperature oxidation in both air and steam was examined experimentally with pure iron and a Fe-10Cr-0.08C (mass%) ternary ferritic steel. In case of pure iron, the thickness of the oxide scale formed in steam at 923 K for 360 ks was comparable to that of the scale formed in air. On the other hand, in case of…