Materials Literature
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Abstract Debattistiite, ideally Ag 9 Hg 0.5 As 6 S 12 Te 2 , is a new mineral (IMA-CNMNC 2011-098) from the Lengenbach quarry in the Binn Valley, Valais, Switzerland. It occurs as very rare tabular euhedral crystals up to 150 μm across in cavities in dolomitic marble, associated with realgar, rutile, trechmannite and…
Transparent oxyfluoride tellurite glass with the composition of TeO 2 -SiO 2 -AlF 3 -CaO-KF system were prepared by conventional melting and annealing technique, and the transparent oxyfluoride glass-ceramics containing CaF 2 nano-crystallines were obtained by controlled heat-treatment. The effect of heat-treatment sc…
In this article, the small-scale effect on buckling analysis of radially compressed nanorings is investigated. The effect of small length scale is taken into account using nonlocal elasticity theory. The principle of virtual displacement is implemented to circular nanorings to derive the governing differential equatio…
A new approach to describe transmission characteristics of nonreciprocal metamaterial structures is proposed by using a combination of field theory and transmission line model. This approach is implemented into the analysis of nonreciprocal negative-epsilon transmission line that is composed of a normally magnetized f…
With the background of thermal protection applications of anti-oxidation carbon fiber reinforced composites, carbon fiber reinforced ultra-high temperatureceramics with homogeneous disperse complex matrix of C-ZrB2-SiC (C/C-ZrB2-SiC) was prepared. Carbon fiber performs were deposited with pyrolytic carbon by chemical…
As the use of plastics has increased in various industries, research on microcellular plastics has increased as well. The microcellular foaming process helps produce lighter plastic and reduces material consumption. This process also affects the optical properties. The primary purpose of this study is to measure the v…
Development of a single molecule tracing methods in vitro and in vivo is a challenging task and it has attracted the attention of scientists all over the world. Here we made an attempt to develop a system to trace a single molecule of 5-fluorouracil (an anti cancer agent) by conjugating it to fluorescent nano crystals…
A técnica "Switch Back" consiste em oscilar a tocha durante a soldagem na direção do cordão e não transversalmente. Entretanto, pouco se conhece a respeito dos aspectos metalúrgicos do metal de solda depositado por essa técnica. Assim, neste trabalho é apresentado um estudo qualitativo do efeito do ângulo de ataque da…
The low-lying states of an organic donor-σ-acceptor dyad, i.e. tetrathiafulvalene-σ-tetracyano-p-quinodimethane (TTF-σ-TCNQ), in gas phase and in various solvents have been investigated by means of hybrid DFT calculations in combination with the conductor-like polarizable continuum model to describe solvent effects. I…
The dependence of the current density on the leading edge width of the alternating (high-frequency) field amplitude is studied at various constant (or unsteady) fields. The dependence of amplified microwaves in the two-millimeter range on a longitudinal coordinate is determined. The problem of submillimeter radiation…
The mechanical deformation properties of (110) Co/Cu multilayered nanowires were studied by Molecular Dynamics under uniaxial tensile and compressive stresses. The potential of the immiscible CoCu system was modeled by a second-moment tight-binding approximation. Stress-strain curves at different conditions were obtai…
We present the results of the study of middle infrared absorption (MIR) and X-ray absorption (XAS) spectra of nanostructured CuO and Cu 2 O ceramics prepared by the high pressure torsion method from coarse-grain oxide powders. We have found that the MIR bands at ~140 meV in CuO and Cu 2 O nanoceramics are associated w…
The sol-gel method is used to fabricate Fe crystalline powders coated with SiO 2 . By controlling the molar ratio R of diluted water to tetraethoxysilane (TEOS), Fe powders coated with SiO 2 with different morphological characteristics are fabricated. The influence of the core diameter on electromagnetic parameters is…
Thermodynamic parameters (ΔG°, ΔS°) of quasi-isoenthalpic coordination of (tetraphenylporphyrinato) zinc(II) with anilines (except for 4-halo derivatives) in chloroform at 273–313 K in the absence of steric factors are linearly related to shifts of their absorption bands in the electronic spectra in reactions with ani…
Blends of isotactic polypropylene (ipp) and nucleating agent with or without the elastomer (POE or SEBS) as a toughening agent were systematically investigated. The influence of the POE and SEBS were studied by differential scanning calorimetry (DSC), polarizing microscope (PLM), and the optical properties and mechani…
Abstract A series of compounds based on peroxide-cured EPDM were prepared with varying amounts of paraffinic plasticizer and carbon black. Modeling of the NMR relaxation signal was successfully carried out by either a biexponential or triexponential fitting procedure. It was found the degree of plasticization correlat…
We report magneto-optical spectra of the Heusler bulk alloys Ni-Mn-In, thin films Ni-Mn-Ga, microwires Ni-Mn-In and Ni-Mn-Ga in martensitic and austenitic states. Transversal Kerr effect (TKE) was studied at an angle of light incidence of 68° with respect to the sample plane, in the energy range 0.5 eV < E < 4.0…
A high purity of Ti 2 AlC powder has been synthesized by pressureless sintering a mixture of Ti-Al-TiC-Sn (Sn as an additive) powders. Four recipes with different mole ratios of Ti-Al-TiC-Sn were examined at sintering temperature from 1400°C to 1480°C. A high purity of Ti 2 AlC powder can be obtained by sintering all…
Abstract The four‐point bend test is used extensively to measure the edge (and surface) strength of AMLCD displays both in panel form and single substrate. The subtleties of four‐point bend test for AMLCD panel applications and how one might use additional techniques, such as strain gage, finite element modeling and f…
In this work composite material composed of high density polyethylene and inorganic pigment (carbon black and titanium dioxide) was prepared. Different amounts of carbon black and titanium dioxide (2– 15) wt% were added as filler. The preparation of filled and unfilled (High density polyethylene /Carbon black and tita…