Materials Literature
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Systematic studies of ferroelectric domain reversal of strontium barium niobate (Sr0.61Ba0.4Nb2O6 or SBN:61) single crystals by electric-field poling using liquid electrodes are reported. In contrast with previous studies using metal electrodes, it is shown that repeated domain reversal does not lead to polarization f…
Within the last few years there has been an explosive growth in published reports on the use of electrospinning as a method of generating scaffolds intended for biomedical applications. Specific advantages of electrospun scaffolds (high surface-to-volume ratio, controlled porosity, and flexibility to conform to a wide…
Abstract Protein crystallization offers great potential in downstream processing of pharmaceutical protein active ingredients. The advantages, which are well known and widely utilized in low‐molecular weight crystallization, can also be expected to be found to some extent in protein crystallization. However, there is…
The effects of dealumination, pore size, and calcination on the efficiency (as expressed in the relaxivity) of Gd3+-loaded zeolites for potential application as magnetic resonance imaging (MRI) contrast agents were studied. Partial dealumination of zeolites NaY or NaA by treatment with (NH4)2SiF6 or diluted HCl result…
Moisture equilibrium data of mango pulp were determined using the static gravimetric method. Adsorption and desorption isotherms were obtained in the range of 30-70 ºC, to water activities (a w) from 0.02 to 0.97. The application of the GAB model to the experimental results, using direct nonlinear regression analysis,…
In this work, azobenzene-containing colloidal spheres have been fabricated and used to construct photoresponsive monolayers. The colloidal spheres were prepared from an amphiphilic azobenzene-containing random copolymer through hydrophobic aggregation of the polymer chains, which was induced by adding the selective so…
Ultralong single-crystalline TiO(2) nanowires were prepared by a simple, low-cost solvothermal process. Silver nitrate, neodymium chloride, ceric nitrate, stannic chloride hydrate, and cadmium chloride were used as metal sources and deposited by reduction on the surface of TiO(2) nanowires. The composites were subsequ…
Abstract Different kind of drugs can be loaded into the porous silicon microparticles for oral dosing. In cases where the drug is in its crystalline form in the pores, the amount of the loaded drug can be determined accurately using a calorimetric method, thermoporometry. Even if the drug substance is not in crystalli…
Palladium nanocrystals were grown on a nanostructured SrTiO(3)(001) surface and annealed in ultrahigh vacuum at 620 degrees C. This leads to the so-called strong metal-support interaction (SMSI) state, characterized by encapsulation of the metal clusters with an oxide layer. Scanning tunneling microscopy (STM) of the…
Electrospinning has been recognized as an effective way to produce polymeric fibers from solution and molten states. However, the use of electrostatic attraction to deform or elongate a liquid or polymer is not a modern discovery. There is evidence of this technology dating back over 400 years. Modern science has, how…
Hydrocarbon diradical 1, a new stable, 3-fold symmetric analogue of trimethylenemethane (TMM) with no heteroatom perturbation, is prepared and studied. Such diradicals should provide new building blocks for high-spin hydrocarbon polyradicals with very strong net ferromagnetic coupling. Magnetic studies (SQUID) and EPR…
Despite the extensive investigations carried out on the pollution performance of outdoor insulators, the flashover characteristic and its interaction with insulator shape is still not very well understood. In this paper, we present findings of experiments which allow quantifying the effects of insulator geometry on th…
Abstract In this paper the first example of a mixed‐ligand Mn II complex, having a trigonal‐prismatic coordination geometry with simple, innocent, didentate ligands is presented. The solution and solid‐state structures of [Mn(acac) 2 (bpy)] as studied by EPR spectroscopy, magnetic susceptibility measurements and XRD a…
The effects of annealing temperature and hydrolysis catalyst on the crystalline form and crystallite size of TiO2 prepared by a sol-gel process were investigated. Three types of TiO2 were synthesized by hydrolysis of titanium(IV)-iso-propoxide with water in n-propanol without catalyst (Type-A) and with HCl as catalyst…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTA One-Step Approach to the Highly Efficient Preparation of Core-Stabilized Polymeric Micelles with a Mixed Shell Formed by Two Incompatible PolymersTaoran Hui, Daoyong Chen, and Ming JiangView Author Information Department of Macromolecular Science and The Key Laboratory of Mol…
A liquid crystal phase of matter can be described as one where the constituent molecules are sufficiently disordered to confer the flow properties of a liquid, yet still retain some degree of order...
Precipitation of charged amino acids in the presence of oppositely charged polyelectrolytes leads to liquid droplets of the corresponding polymer/amino acid complexes in water. The resulting emulsions are stable against crystallization and Ostwald ripening for several months but can also be used as a starting situatio…
AbstractThe effect of different zirconium contents on the grain size of Mg–9Gd–4Y alloys and the grain refinement mechanism of zirconium have been studied. The results reveal that zirconium can refine the grains of the alloys to a large extent, and the grains become finer with an increase of zirconium content. Microst…
An ordered molecular assembly of heteroleptic bis(phthalocyaninato) rare earth complexes M(Pc)[Pc(OC8H17)8] [M = Tb, Lu; H2Pc = phthalocyanine; H2Pc(OC8H17)8 = 2,3,9,10,16,17,23,24-octakis(octyloxy)phthalocyanine] has been fabricated by the Langmuir-Blodgett (LB) technique and characterized by surface pressure-area is…
The mechanisms occurring in plastic flow at elevated temperatures may be divided into three distinct classes depending upon whether they are intragranular dislocation mechanisms, grain boundary sliding including superplasticity or diffusion creep occurring through vacancy flow. The characteristics of these various mec…