Materials Literature
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We report a simple low-temperature inverse micelle solvothermal route for the synthesis of a large quantity of single-crystalline germanium nanocrystals. X-ray diffraction measurement indicates that the as-prepared nanocrystals are composed of pure Ge with a cubic structure. The morphology, size, chemical composition,…
Abstract The present study compares the properties of five films: one film of low‐density polyethylene (LDPE), two films of linear low density polyethylenes (1‐octene comonomer)—one made by metalllocene catalyst (mLLDPE) and the other by Ziegler–Natta (zLLDPE)—and two blend films, one of mLLDPE/LDPE (film A) and the o…
The alkali-metal iodide double-walled carbon nanotube composites MI@DWNTs (M = K, Cs) have been prepared using a melt-phase filling procedure. The imaging and subsequent structural analysis of the encapsulated metal iodide crystals was performed with a combination of phase restored high-resolution transmission electro…
We report the hierarchical self-assembly of ZnO nanoparticles on single-walled carbon nanotubes (SWCNT–ZnO) and multi-walled carbon nanotubes (MWCNT–ZnO) by utilizing an electrostatic coordination approach. The affinity for Zn atoms to the oxygen of the C = O in the carboxyl groups is utilized to decorate oxidized sin…
Poly(amic ester) (PAE) is a soluble precursor of polyimide that has attracted interest from both the microelectronic and the flat-panel display industries because of its several important advantages, including excellent solubility, high hydrolytic stability, and solvent-free film formation, over the polyimide precurso…
The experimental temperature−composition phase diagram of the binary system between hexadecane (C 16 H 34 ) and 1-hexadecanol (C 16 H 33 OH) has been established by combining thermal analysis and powder X-ray diffraction (XRD). Beforehand, crystal structures of the solid ordered phases of the components involved were…
The electronic structure of the corundum-type transition-metal oxides V 2 O 3 and Ti 2 O 3 is studied by means of the augmented spherical wave method, based on density-functional theory and the local density approximation. Comparing the results for the vanadate and the titanate allows us to understand the peculiar sha…
The use of the supercritical fluid technique, rapid expansion of a supercritical solution into a liquid solvent (RESOLV), to process polymers into nanofibers (less than 100 nm in diameter) is reported. It is found that the polymer concentration in the preexpansion supercritical solution plays a critical role in determ…
Crystals of acentric α-resorcinol (space group Pna 2 1, point group mm 2), grown from the vapor phase, present a wide range of morphological forms. Increase in supersaturation (σ) yields, successively, prismatic (σ ∼ 0.001), columnar (σ ∼ 0.003), needlelike (σ ∼ 0.005), and, finally, hexagonal platelike (σ > 0.007) mo…
In this paper, the calibration and workability of magnetoelastic (ME or EM) stress sensors for large steel cables used in Qiangjiang 4th bridge in China are discussed. As an engineering application of magnetoelasticity, EM sensors make non-contact stress monitoring possible for steel hangers and post-tensioned cables…
The paper reports on the preparation, characterization, and dispersion of cadmium sulfide (CdS) nanowires using ordered mesoporous silica, SBA-15, as a template. A homogeneous and stable dispersion of hierarchically ordered CdS nanowires in water solubilized with sodium dodecyl sulfate (SDS) has been obtained. Direct…
Aluminas having hierarchical bimodal pore structures with regular arrayed macropores interconnected with mesopores were synthesized in a cone/plate apparatus that provided well-defined hydrodynamic conditions. A parametric synthesis study was performed to better understand the synthesis conditions required to form the…
Molecularly flat and extremely long bundle-like assemblies were prepared from cadmium hydroxide nanostrands and polysulfonated dyes. The dye molecules were regularly aligned along with the nanostrands, as confirmed by electron microscopies and UV-vis absorption spectroscopy. Strong electrostatic interaction between th…
This paper presents preliminary results from study of a magnetostrictive energy harvesting transducer. The magnetostrictive samples studied in the device were 1/4" diameter and 2" long cylindrical rods of commercially available Terfenol-D and research-grade specimens of a new ductile Iron-Gallium alloy known as Galfen…
A convenient route for the synthesis of high-quality overcoated II-VI quantum dots (QDs) is reported in this paper. Simple salts, such as Cd(Ac)2 and Zn(Ac)2 were used to replace organometallics, whose disadvantage is obvious. Size-tunable core/shell structured QDs (CdSe/ZnS, CdSe/CdS, etc.) were synthesized. They wer…
Stress corrosion cracking (SCC) initiation tests were conducted on Alloy 600 and Alloy 600 weld metal (EN82H) at elevated temperatures (315°C to 360°C). Tests were conducted with insitu monitored smooth tensile specimens under a constant load in both hydrogen dearated and aerated environments. The use of uniaxial tens…
The effect of postmodification of polyelectrolyte multilayer microcapsules by exposure to organic solvent/water mixtures on their permeability, morphology, and mechanical properties is investigated. We study microcapsules with ultrathin shells composed of alternating polystyrene sulfonate and polyallylamine hydrochlor…
Pb ( Zr x Ti 1 − x ) O 3 (PZT) thin films were coated on Pt/Ti/SiO2/Si substrates by a sol-gel method and then crystallized by 28 GHz microwave irradiation. The elevated temperature generated by microwave irradiation to obtain the perovskite phase is only 480 °C, which is significantly lower than that of conventional…
We describe a novel technique of using fluorescent silica nanoparticles (FSNPs) to detect over-expressed folate receptors, as typical for certain malignancies (metastatic adenocarcinoma, pituitary adenoma and others). Using Stöber's method with some modification, 135 nm size FSNPs were synthesized by a hydrolysis and…
Abstract Reaction of a Mg-Al carbonate layered double hydroxide (LDH) with boric acid leads to a borate-pillared LDH with the stoichiometry [Mg 0.65 Al 0.35 (OH) 2 ][B 3 O 5 ] 0.35 .0.65H 2 O and an interlayer spacing of 1.07 nm. Infrared and 11 B magic angle spinning nuclear magnetic resonance data are consistent wit…