Materials Literature
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NiTiNb shape memory alloys have attracted much attention in pipe coupling or sealing system because of their large transformation hysteresis upon a proper pre-deformation. In order to clarify the effects of adding Nb on the mechanical properties as well as the transformation behavior of NiTiNb shape memory alloys, Ni4…
Bromo-substituted hydrodipyrrins are valuable precursors to synthetic bromo-chlorins and bromo-bacteriochlorins, which in turn are versatile substrates for derivatization in pursuit of diverse molecular designs. 8-bromo-2,3-dihydro-1-(1,1-dimethoxymethyl)-3,3-dimethyldipyrrin (1) is a crucial precursor in the rational…
Miktoarm block copolymers (A 2 B 2 ) composed of two poly(ε-caprolactone) (PCL) arms and two polystyrene arms (PS) were synthesized by a combination of ring-opening polymerization (ROP) and atom transfer radical polymerization (ATRP). Linear analogue PCL- b -PS diblock copolymer samples were also synthesized in almost…
In this paper, a chitosan-methotrexate covalently conjugated nanoparticles (CS-MTX-TPP NPs) has been developed as a potential delivery system for methotrexate (MTX). MTX was first conjugated to CS by using glutaraldehyde as cross-linked agent, and followed by the process of ionic gelation between MTX-conjugated CS and…
In this work, the complex permittivity of epoxy resin is measured. Earlier, we have shown that the inclusion of nanometric alumina particles (Al2O3), both as-received and pre-processed, improves the ability of a polymeric dielectric (epoxy) to resist degradation when exposed to surface discharges. In this work, we use…
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…