Materials Literature
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Magnetic nanoparticles (NPs) of cobalt oxide (Co 3 O 4 ) with the diameter of 20–40 nm have been prepared by a simple liquid deposition method in the Histidine (His) assistance at room temperature. Ethanol plays an important role in the preparation of cobalt oxide NPs with a polycrystalline structure. The growth mecha…
Based on Carroll's derivation that describes a symmetric liquid drop sitting on an infinite cylindrical fiber and the shape of the drop, we have extended the derivation to describe a drop located at the bottom of cylindrical fibers standing on flat substrates. According to our derivation, the shape of the drop forms a…
Density effect on critical current density and flux pinning properties of polycrystalline SmFeAsO1 − xFx superconductor, Ding, Y, Sun, Y, Zhuang, J C, Cui, L J, Shi, Z X, Sumption, M D, Majoros, M, Susner, M A, Kovacs, C J, Li, G Z, Collings, E W, Ren, Z A
Silicon clathrates are unusual open-framework solids formed by tetrahedrally bonded silicon that show remarkable electronic and thermal properties. The type I structure has a primitive cubic unit cell containing cages occupied by metal atoms to give compositions such as Na 8 Si 46 and Na 2 Ba 6 Si 46 . Although their…
A new composition of phosphor material AlON:Er 3+ codoped with Mg 2+ were prepared by solid‐state reaction method. The effect of Mg 2+ dopants on upconversion luminescence properties of the AlON:Er 3+ phosphor was investigated. At certain concentrations, Mg 2+ dopants were found to greatly enhance the red emission int…
Effect of water vapor on the thermally induced crystallization of tetragonal ZrO 2 in hydrous gel precursor was investigated using TG‐DTA under controlled water vapor pressures, p ( H 2 O ). Existence of the temperature region for preliminary nucleation in the region lower than that of the crystallization exothermic p…
The growth of anhydrite (100) surface in contact with supersaturated aqueous solutions (β anh = 1–3.6) under low hydrothermal conditions ( T = 60–120 °C) has been studied by use of a hydrothermal atomic force microscope (HAFM). Our observations show that growth on this surface occurs by lateral spreading of monomolecu…
Solid-state photochromism of benzopyrans and naphthopyrans (chromenes) was investigated in the temperature range between 300 and 80 K. Variable-temperature diffuse reflectance spectroscopy of microcrystalline powders showed that the extent of photocoloration was greatly enhanced at low temperatures. All the chromenes…
Abstract The silver (Ag) nanoparticle (NP) decorated zinc oxide (ZnO) nanorod arrays (NRAs) on aluminum‐doped ZnO (AZO) coated glass substrates were fabricated by the wet chemical synthesis of ZnO and a subsequent thermal evaporation of Ag without thermal annealing. The optical properties of ZnO NRAs with different si…
New dinuclear rhodium(II) pyrazolate (Pz) complexes of formula Rh(2)(3-R,5-R'Pz)(4)·2L (R = R' = CF(3), L = H(2)O (1), CH(3)CN (2)) and Rh(2)(3-R,5-R'Pz)(4) (R = R' = (t)Bu (3); R = CF(3), R' = (t)Bu (4)) have been synthesized from the interaction of the lithium salt of the corresponding pyrazole with Rh(2)(OAc)(4) in…
Purpose The purpose of this paper is to investigate the effects of the components of whey‐protein based aqueous polymer‐isocyanate (API) adhesives on the bond strength. Design/methodology/approach The bond test (according to the JIS K6806‐2003 standard), Fourier transform infrared spectroscopy (FTIR) and scanning elec…
Americanae nace como un proyecto conjunto que surge dentro de la Red Europea de Información y Documentación sobre América Latina (REDIAL), y que ha afrontado la Biblioteca de la Agencia Española de Cooperación Internacional para el Desarrollo (AECID). Esta nueva biblioteca virtual hace más accesibles los libros digita…
We examine the small-angle x-ray scattering (SAXS) from samples of biogenic nature to study soft-matter and the associated biology. Biogenic samples are prepared from soft tissues. SAXS from different tissues varies according to both genetic (species) and environmental (habitant differences) factors. SAXS spectra (int…
The orientational assembly of glass rods (3 x ~15 µm) in nematic, twisted nematic, and cholesteric liquid crystal cells was observed and quantified with optical microscopy. At this size, the rods were affected strongly by gravity and sedimented to the bottom of the cells. Temporal visualization of the sedimentation pr…
Colloid probe atomic force microscopy was used to measure the hydrodynamic force exerted on a 30-μm-diameter silica particle being moved toward or away from a silica plate in aqueous dispersions of 22-nm-diameter silica nanoparticles (6 or 8 vol %). Upon comparing the measured force to predictions made using the well-…
Purpose The purpose of this paper is to investigate microbially induced corrosion on stainless steels due to sulfate reducing bacteria sp. Desulfovibrio desulfuricans and correlate it with the composition of extracellular polymeric substances (EPS) of the biofilm formed by these bacteria. Design/methodology/approach S…
Purpose The purpose of this paper is to study the effect of new heterocyclic compounds on styrene butadiene rubber (SBR) mixes. Design/methodology/approach It has been found that the starting material 1 could react with cyromazine (2) and/or 4‐aminoantipyriene (4) as amino compounds in the presence of triethylorthofor…
An ultralow amount of platinum can be deposited on the gold surface using copper underpotential deposition and galvanic exchange. The platinum tended to deposit as layers on the octahedral gold nanocrystals with an Au(111) surface, while it aggregated and formed small particles on the cubic gold nanocrystals with an A…
The lifetime of aluminum reduction cells is driven primarily by the lifetimes of two components of the cell lining: the carbon cathode and the sidewall refractory material. The current state‐of‐the‐art sidewall material is a silicon nitride bonded silicon carbide ( SNBSC ) refractory and its corrosion mechanisms in th…
Purpose The purpose of this paper is to study the effective procedure for blocking and deblocking isocyanate by sodium bisulphite with special cosolvent and dropwise method. Design/methodology/approach A number of analytical techniques, including Fourier transform infrared spectroscopy (FTIR), Differential scanning ca…