Materials Literature
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Abstract By means of the diagonalization of the complete energy matrix of 3d 2 /d 8 ions in trigonal symmetry and in consideration of the covalency reduction effect, the optical and EPR spectra of V 3+ ions in C(NH 2 ) 3 Al(SO 4 ) 2 · 6H 2 O crystal are calculated. The results are in agreement with the observed values…
In the synthesis of the disordered lyotropic liquid crystalline L3 sponge phase prepared with the cosurfactants cetylpyridinium chloride and hexanol, aqueous NaCl solution is used as the solvent. When this sponge phase is used as the template for L3 silica-phase processing, we replace NaCl with HCl to facilitate the a…
The (001) surface of triclinic hen egg-white lysozyme-nitrate crystals has been investigated by in-situ atomic force microscopy (AFM) to compare its growth mechanisms and properties to those of other lysozyme pseudopolymorphs. The crystal morphology derived from connected net analysis using the macrobond concept is in…
Several subphthalocyanine derivatives that contain an alkoxo substituent as an axial ligand (RO-Subpc, R = 9-anthracenemethyl, benzyl, phenyl, 3,5-dimethylbenzyl, 3,5-dimethylphenyl, 4-methylbenzyl, and 4-methylphenyl) were synthesized. The formation of inclusion complexes of RO-Subpc with beta-CD in DMSO and at the t…
Harshaw TLD-700H (7LiF:Mg,Cu,P) was previously characterised for low- to high-dose ranges from 1 microGy to 20 Gy. This paper describes the studies and results of dose-response and linearity at much higher doses. TLD-700H is a near perfect dosimetric material with near tissue equivalence, flat energy response, and the…
Abstract We investigated the effect of mixing protocol on the morphology of compatibilized polymer blends made with premade compatibilizer and reactively formed in‐situ compatibilizer in a custom‐built miniature mixer Alberta Polymer Asymmetric Minimixer (APAM). The compatibilized blends show a finer morphology than u…
Radiation damage effects in polycrystalline pellets of the rare earth sesquioxide Dy2O3 irradiated with 300 keV Kr2+ ions were studied by combining grazing incidence X-ray diffraction (GIXRD) with transmission electron microscopy (TEM). Radiation damage was introduced using 300 keV Kr2+ ions to fluences up to 1 × 1020…
Abstract Two types of multi‐walled carbon nanotubes (MWCNTs), chemically modified and unmodified, were dispersed in epoxy resin with ultrasonication. The light transmittance characteristics of epoxy composites with different ratios of MWCNTs to epoxy resin were measured at wavelengths ranging from 200 to 1100 nm. Resu…
We have discovered that the initial rate of the post-illumination decay of photoconductivity in nanocrystalline $\mathrm{Ti}{\mathrm{O}}_{2}$ depends on the intensity of the illumination. The phenomenon is described by hole detrapping processes affected by electrostatic interactions between the trapped holes, and scre…
Abstract It has been suggested that isothermal flow‐induced crystallization is jointly linked to strain and strain rate. Here we test this idea further by studying some results of Bove and Nobile on isotactic poly (1‐butene). We also present some new experimental results on polypropylene in finite amplitude sinusoidal…
Abstract Aqueous polyurethane dispersions derived from various polycarbonatediols, di(4‐isocyanatocyclohexyl)methane (HMDI), and various carboxylic diols, including dimethylol propionic acid (DMPA), dimethylol butyric acid (DMBA), and a carboxylic polycaprolactonediol, were prepared by a method in which the dispersing…
New polymethacrylate liquid crystalline copolymers, which are comprised of photo-cross-linkable 4-(4-methoxycinnamoyloxy)biphenyl (MCB) and photosensitizing 4-nitrobiphenyl (NB) or 4-nitrophenyl (NP) side groups, were synthesized. The irradiation with linearly polarized (LP) 405 nm light was performed to investigate t…
A simple approach to the self-assembly production of palladium nanowires by electroless deposition on a porous stainless steel template is reported. Various arrays of self-assembled palladium nanowires in the form of single wire, parallel and curved wires, intersections and network structures are illustrated. This exp…
Abstract The electrochemical synthesis of common conductive polymers such as polyaniline in phosphoric acid is a little different from that in other acidic media such as sulfuric acid. Electropolymerization in phosphoric acid is difficult, and this electrolyte medium is not applicable for this purpose. However, it is…
Single-crystalline trumpetlike Zn3P2 nanostructures composed of hollow cones supported by nanowires have been prepared via a simple thermochemical method, which utilized ZnS and GaP as the source materials. The as-synthesized nanostructures are composed of single-crystalline Zn3P2 nanowires with diameters of ∼50nm and…
In-situ observations on the initiation and propagation behaviour of low-cycle fatigue small cracks in cast magnesium–aluminium alloys (AM50 and AM60B) were carried out with scanning electron microscopy (SEM) to elucidate the resistance to fatigue cracking and to evaluate the fatigue small crack growth rate accurately…
It is shown for a model system consisting of spherical particles confined in cylindrical pores that the first ten close-packed phases are in one-to-one correspondence with the first ten ways of folding a triangular lattice, each being characterized by a roll-up vector like the single-walled carbon nanotube. Phase diag…
Europium-doped yttria nanotubes were coated with yttria by a simple two-step hydrothermal method, forming the Y2O3:Eu3+∕Y2O3 core-shell composite. Remarkable improvement of photoluminescence was observed in the core-shell composite under both violet and ultraviolet excitations. These characteristics were attributed to…
Elastically inhomogeneous multilayer films are being exploited for use as ultra-hard coatings. These films exhibit a strong dependence between the compositional wavelength of the film, Λ, and the hardness, H=KΛ−a+H0 where the scaling exponent a depends on the elastic properties of the individual layers (shear moduli a…
A theoretical model is suggested which describes the generation of lattice perfect, lattice partial and grain boundary dislocation loops (DLs) at pre-existent DLs in mechanically loaded nanocrystalline materials (NCMs). The energy characteristics of various modes of the DL generation are calculated and compared. With…