Materials Literature
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Diamond nanorods are one-dimensional carbon nanostructures consisting of all sp3 bonded carbon atoms. They represent an alternative class of carbon structure to fullerene nanotubes for potential applications in nanocomposites for mechanical reinforcement and thermal management, as well as in microelectronics. Syntheti…
Abstract Stable weak polyelectrolyte (PE) microcapsules were fabricated by applying thermal treatment on poly(styrene sulfonate) (PSS) doped CaCO 3 microparticles coated alternatively with poly(allylamine hydrochloride) (PAH) and sodium poly(acrylic acid) (PAA) in a layer‐by‐layer (LBL) assembly manner, followed by co…
Two aluminum Schiff base catalysts with the formula LAlEt [L = bis(benzoylacetone)trimethylenediimine (1) or bis(benzoylacetone)ethylenediimine (2)] were designed and synthesized for a comparison of their catalytic properties in the polymerization of racemic lactides. Single-crystal data of catalyst 1 confirmed its tr…
Abstract This article provides an overview of metastable β titanium alloys either being utilized or being considered for use in orthopedic applications. The effects of thermomechanical processing on the mechanical properties (e.g., elastic modulus, tensile, wear and high cycle fatigue performance) of Ti‐15Mo‐0.2O, Ti‐…
The effect of oxygen (O2) contamination on the inhibition of carbon dioxide (CO2) corrosion was studied using carbon steel rotating cylinder electrodes (RCE). The test conditions were 40°C, 1 bar CO2, pH 5.5, and 1 wt% sodium chloride (NaCl) solution. The uninhibited CO2 corrosion rate was 1.5 mm/y to 2 mm/y under the…
A novel biomimetic catalytic system containing a supramolecular complex between iron(III)-tetrakis(p-sulfonatophenyl)porphyrin [Fe(III)-TPPS] and hydroxypropyl-beta-cyclodextrin (HP-beta-CD) was examined for the potassium monopersulfate catalyzed oxidation of pentachlorophenol (PCP). In the absence of HP-beta-CD, the…
A fast coupled-integral-equation (CIE) technique is developed to compute the plane-TE-wave scattering by a wide class of periodic 2D inhomogeneous structures with curvilinear boundaries, which includes finite-thickness relief and rod gratings made of homogeneous material as special cases. The CIEs in the spectral doma…
Through the incorporation of sterically hindering, bulky terminal groups into the structures of chiral and racemic smectic liquid‐crystalline materials, we sought to interfere with, and decouple, the layers of various mesophases. By varying the size of the terminal group we found that we could control the mesophase st…
We describe a procedure for calculating the core loss in high-speed switched-reluctance machines. The technique calculates core losses within a switched-reluctance machine to a high degree of spatial resolution over a wide range of operating conditions. We confirmed the calculations experimentally, using a loss segreg…
Abstract In this paper “smart” nanocomposites comprising Stöber silica nanoparticles of two different surface polarities and a novel thermoreversible crosslinking rubber carrying self‐complementary hydrogen bonding (HB) moiety were presented. This strategy is based on the idea that the introduction of HB between silic…
Abstract Summary: In this paper, films were prepared from soy protein and corn starch in different proportions and thermal stability and kinetic parameters were determined through degradation reactions in an inert atmosphere. Solid residues and decomposition products were identified by infrared spectroscopy. Films fro…
This study deals with the synthesis and in vitro osteocompatibility evaluation of two novel alanine-containing biodegradable ester polyphosphazenes as candidates to form self-setting composites with hydroxyapatite (HAp) precursors. The two novel biodegradable polyphosphazenes synthesized were poly[(ethyl alanato)1.0(e…
Fabrication of periodic structures with resolution below 100nm is required in many emerging applications such as subwavelength optical components, self-assembly templates, or patterned magnetic media. The achromatic spatial frequency multiplication technique that we have developed uses wideband illumination and self-i…
We simulated the photoisomerization dynamics of an azobenzenophane with a semiclassical surface hopping approach and a semiempirical reparametrized quantum mechanics/molecular mechanics Hamiltonian. Only one of the two azobenzene chromophores in the molecule is taken into account quantum mechanically: the other one is…
The microstructure and composition, including chemical speciation of S, of the calcitic and aragonitic shell layers of two mollusc shells were investigated using a combination of thermogravimetric analyses, scanning electron microscopy, electron probe microanalyses, and X-ray absorption near-edge structure spectroscop…
We have studied shearing in M2AC (space group P63/mmc, prototype Cr2AlC), where M is Ti, V and Cr, and A is Al and Ga, using ab initio calculations. These compounds can be described as interleaved layers of MC and A. As Ti in Ti2AlC is substituted by V, c44 increases by 24.3%. Increasing the transition metal valence e…
The synthesis and characterization of two homologous series of tetramers in which four mesogenic units are linked via three alkyl spacers are reported. Both series contain a hexamethylene central spacer while the length of the two outer spacers, n, is varied from three to 12 methylene units. The two series differ only…
This study proposes an equivalent-circuit model for the composite right/left-handed (CRLH) coplanar waveguide (CPW) comprising the series interdigital capacitor and shunt meandering short-circuited stub inductor in symmetric configuration. The new technique for extracting the equivalent-circuit elements of the CRLH CP…
We present results of a high-pressure photoluminescence study of Mn- and Ca-doped gadolinium gallium garnet (GGG) crystals. Since the Mn 4+ ion has the same electronic structure of the open 3d 3 shell as Cr 3+ , its spectroscopic properties are expected to be similar to those of the Cr-doped GGG. We observed the lumin…
High-quality transparent conductive aluminum-doped ZnO (AZO) thin films were deposited on quartz glass substrates using pulsed laser deposition (PLD). We varied the growth conditions in terms of substrate temperature and oxygen pressure. The crystallographic structure and electrical and optical properties of the as-gr…