Materials Literature
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Synthesis and structural diversity of novel aromatic expanded isophlorins are described. Expanded isophlorins are higher analogues of 20pi isophlorin; 30pi isophlorins are the simplest examples of expanded isophlorins. They are synthesized from easy to make precursors. Owing to the sp(2) carbons along the conjugated n…
In the present work we explored the possibility of obtaining Y 2 O 3 :Eu 3+ m-size particles by an ultrasonic spray pyrolysis method. As-prepared sample constitutes of spherical, hollow particles with an average size of 1 to 2 m. Pure, well crystalline, cubic Y 2 O 3 is formed after additional thermal treatment at 800…
We review recent numerical work investigating the equilibrium phase diagram, and the dynamics of the cholesteric blue phases. In equilibrium numerical results confirm the predictions of the classic analytical theories, and extend them to incorporate different values of the elastic constants, or the effects of an appli…
High-pressure transformation and compression behavior of Gd2O3 were investigated using synchrotron radiation x-ray diffraction in a diamond anvil cell up to 44 GPa at room temperature. The structural transformation from a cubic to a monoclinic phase occurred during the sample precompression process. Phase transitions…
Ivanyukite-Na-T, Na 3 [Ti 4 (OH)O 3 (SiO 4 ) 3 ]·7H 2 O, ivanyukite-Na-C, Na 2 [Ti 4 O 2 (OH) 2 (SiO 4 ) 3 ]·6H 2 O, ivanyukite-K, K 2 [Ti 4 (OH) 2 O 2 (SiO 4 ) 3 ]·9H 2 O, and ivanyukite-Cu, Cu[Ti 4 (OH) 2 O 2 (SiO 4 ) 3 ]·7H 2 O, are new microporous titanosilicates found in a natrolitized microcline-aegirine-sodalit…
Temperature effects on the structural evolution and diffusivity of Cu60Zr40 in the liquid and glassy states were studied by molecular dynamics simulations using the Finnis–Sinclair potential. The pair distribution functions and common-neighbor analysis were used to investigate the structural variations. It is found th…
Quantum dots (QDs) of ZnO of 2-4 nm size have been encapsulated within a SiO(2) matrix using aqueous chemically grown ZnO nanoparticles in a precursor of tetraethyl orthosilicate. The microstructure shows almost a uniform embedment of the QDs in the SiO(2) matrix, resulting in a ZnO QDs-SiO(2) composite structure. The…
Nephrogenic systemic fibrosis is a progressive, potentially fatal multiorgan system fibrosing disease related to exposure of patients with renal failure to the gadolinium-based contrast agents used in magnetic resonance imaging. Because of this relationship between nephrogenic systemic fibrosis and gadolinium-based co…
We herein demonstrate that Ni-decorated single-walled carbon nanotube field effect transistors (SWNT-FETs) combined with antibody fragments can be used as effective biosensing platforms. Nanoscales Ni particles 20 to 60 nm in diameter were formed on the sidewalls of SWNT-FETs using an electrochemical method. Carcinoem…
Tazieffite, ideally Pb 20 Cd 2 (As,Bi) 22 S 50 Cl 10 , is a new mineral from the high-temperature fumaroles of the Mutnovsky volcano, Kamchatka Peninsula, Russian Federation. It occurs as tiny, slender, needleshaped crystals, up to 400 μm long and 10 μm across, generally forming fibrous aggregates. Tazieffite is close…
Crystal symmetry breaking of wurtzite C6Vto orthorhombic C2Vdue to in-plane anisotropic strain was investigated for nonpolar a-ZnO epi-films grown on R-sapphire.
Three typical types of magnetic lamination core loss measurement methods, the toroid tester, the standard Epstein frame and a single sheet tester, are first reviewed. Results of four types of testing (previous three plus a new Epstein frame for high flux density and frequency) are presented and compared. Comparisons a…
Semiconductor nanoparticles of ZnS:Co are synthesized by wet chemical method at room temperature. The effects of increasing cobalt ions dopant in PL ZnS particles are studied, and the distribution, absorption, excitation, emission, and structural properties of particles have been determined. XRD investigation shows th…
The current study focuses on manufacturing, recycling and mechanical testing of thin (1.5 mm) sisal-PP extruded composite sheets. An 3-factor two-level experimental design based on the Taguchi method was applied in the manufacturing of the composite sheets to maximise their mechanical properties. The sisal-PP composit…
This review is based on the literature describing several methods for the synthesis of gallium oxide nanoparticles. Several techniques have been used for the synthesis of gallium oxide Ga2O3 nanoparticles. Gallium oxide Ga2O3 nanoparticles have been synthesized from different precursors. Different synthetic methods an…
Abstract In spite of many studies of laterite origins in various parts of the world, the origin of laterite in the middle to lower reaches of the Yangtze River is still a topic of debate, thus leaving doubts about the prevailing environmental and climatic conditions at the time. The purpose of this study was to provid…
We report on the phase behavior of an aqueous binary charged sphere suspension under exhaustively de-ionized conditions as a function of number fraction of small particles p and total number density n. The mixture of size ratio Gamma=0.557 displays a complex phase diagram. Formation of bcc crystals with no composition…
Five hexanuclear oxo-hydroxo lanthanide clusters are synthesized by hydrolysis of the lanthanide ions together with 4-amido-3,5-dimethyl-1,2,4-triazole (L). They all have a [Ln6(µ6–O)(µ3–OH)8]8+ core structure and the triazole groups stabilize the core structure in different fashions. The oxo group functions as an ani…
We describe the new mineral species zangboite , ideally TiFeSi 2 , found in the podiform chromitites of the Luobusha ophiolite in Tibet, People’s Republic of China. The tabular to irregular crystals range from 0.002 to 0.15 mm in diameter and form an intergrowth with native silicon and a Fe–Si phase. Zangboite is stee…
FeCl 2 @OCHT, FeBr 2 @OCHT, and FeI 2 @OCHT nanocomposites were obtained by capillary filling of the channels of carbon single-walled nanotubes (SWNTs) with melts of iron halogenides. The composites were studied by high resolution transmission electron microscopy (HRTEM), the capillary condensation of nitrogen at 77K,…