Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTComparative Study of Dodecanethiol-Derivatized Silver Nanoparticles Prepared in One-Phase and Two-Phase SystemsSo Young Kang and Kwan KimView Author Information Department of Chemistry and Center for Molecular Catalysis, Seoul National University, Seoul 151-742, Korea Cite this…
Mechanisms of water treeing are reviewed. A definition of water trees is proposed on the basis of permanent the hydrophilic character and the reduced breakdown strength. Properties are discussed that are relevant to the water tree definition and to the inception and propagation mechanism. This includes the water conte…
The thermodynamic effects of microstresses on the formation of polydomain heterostructures are considered. The microstresses arise due to the periodic deviation of the actual misfit from the average misfit on the interfaces between a polydomain layer and neighboring layers. The thermodynamic analysis is restricted to…
Making use of extensive scanning electron microscopy and the Rietveld analysis of X-ray diffraction profiles, we have studied the morphology, crystal habits and phase compositions of crystals of calcium carbonate grown on modified organic surfaces by precipitation from solution. The studies have been aimed at modeling…
This study describes the characteristics and effect of gamma (γ)‐NiOOH on cell performance and a method to quantify it in NiCd and NiMH battery systems. γ‐NiOOH is formed in nickel electrodes under conditions of aging, high percent overcharge, charge rates, and electrolyte concentrations. Formation of this phase resul…
The evolution of deformation—;microfracture damage below Hertzian contacts in a coarse‐grain Ti 3 SiC 2 is studied. The Hertzian indentation stress—;strain response deviates strongly from linearity beyond a well‐defined maximum, with pronounced strain—;softening, indicating exceptional deformability in this otherwise…
The development of biomaterials with desirable biocompatibility has presented a difficult challenge for tissue engineering researchers. First and foremost, materials themselves tend to be hydrophobic and/or thrombogenic in nature, and face compatibility problems upon implantation. To mediate this problem, researchers…
Through an atmosphere-controlled method, a new phase of hydrotalcite-like Co hydroxide with mixed valent states has been synthesised, along with preparations of known α and β phases. Structural and thermal behaviours of all the Co hydroxides have been compared. Three major stages of decomposition are found: (i) 149-16…
Dieses Buch ist Teil unserer neuen Datenbank Anorganik Online . Seit Jahrzehnten das Standard-Lehrbuch der Kristallographie. Dieser Klassiker wird besonders dem interdisziplinären Charakter der Kristallographie gerecht. Anwendungsbezogene Erkenntnisse wie die technisch wichtige Kristallzüchtung, die Kristallisation in…
Two solution‐based methods, metallo‐organic decomposition and sol—gel processes, were used to study the effects of precursor solution type on the microstructure evolution and texture development of oriented PZT films. Microstructure development and perovskite content are strongly dependent on the heating rate. Fast he…
The hydrothermal reaction of Cu(SO4)·H2O, MoO3, 4,7-phenanthroline and water yields [{Cu3(4,7-phen)3}2{Mo14O45}], a material exhibiting a two-dimensional network constructed from (Mo6O19)2– and (Mo8O26)4– clusters linked through planar cyclic {Cu3(4,7-phen)33}+ clusters.
In a polystyrene- block -polybutadiene- block -poly(methyl methacrylate) triblock copolymer (SBM) a morphological transition from a lamellar ( ll ) morphology (with sequence ABCB) to the knitting pattern ( kp ) morphology occurs upon hydrogenation of the center PB block. Structural information of the nonhydrogenated a…
The optical properties of different erbium (Er)-doped polydentate hemispherand organic cage complexes are studied, for use in polymer-based planar optical amplifiers. Room temperature photoluminescence at 1.54 μm is observed, due to an intra-4f transition in Er3+. The Er is directly excited into one of the 4f manifold…
Defect‐disorder models are derived for undoped and strontium‐doped LaMnO 3 . A random‐defect model and a cluster‐defect model are both considered within the regimes that correspond to oxygen deficit and oxygen excess. The models are constructed based on the experimental nonstoichiometry data that was reported by previ…
Layered double hydroxides (LDH) containing Mg II , Fe III , and Al III in the brucite-like layers and interlayer carbonate (with a constant M II /M III ratio but varying Al III /Fe III ratios) have been prepared and characterised by X-ray diffraction, thermal analysis, FT-IR and UV-VIS/diffuse reflectance spectroscopi…
Sulfathiazole, a compound that forms four known crystal structures, has been examined with a view to understanding its polymorphism. A graph set approach was used to classify the structural differences and similarities of the polymorphs, the results of which indicated packing motifs common to three of the four structu…
The first series of rare-earth carboxylates with an open framework has been prepared hydrothermally (180°C, 3 days) by the action of glutaric acid on the metal chlorides in the presence of base. The crystal structure of the neodymium compound [Nd III (H 2 O)] 2 [O 2 C(CH 2 ) 3 CO 2 ] 3 ·4H 2 O has been determined by s…
The term liquid crystal is often associated with fascinating compounds that exhibit unusual melting or solubilisation properties, however, it also represents a unique collection of mesophases that exist between the solid state and the amorphous liquid. As such, this unique state of matter can be accessed by a wide var…
This report deals with space charge behavior in PE (polyethylene) under dc fields. Direct observation of time-dependent space charge profiles in 3-mm thick XLPE (crosslinked low-density polyethylene) cable insulation under dc electric fields was performed using the pulsed electroacoustic method. Stable hetero charges…
Size exclusion chromatography has been performed on micellar aqueous dispersions of soot from an arc discharge experiment to yield chemically unmodified, almost impurity free and size separated multiwall nanotubes.