Materials Literature
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In this study WO x films were deposited by laser ablation of ultra-pure (5N) tungsten trioxide targets onto SiO2 or silicon substrates at 250°C temperature, 100 mTorr oxygen partial pressure and 1×10−5 Torr vacuum. Surface chemical states and compositions of the deposits were determined by X-ray photoelectron spectros…
Abstract The current work reports the fabrication of crystalline Bi 2 O 3 nanorods on Pt‐coated Si substrates using trimethylbismuth and O 2 as the bismuth and the oxygen sources, respectively, in the metalorganic chemical vapor deposition process. Their microstructures were characterized by scanning electron microsco…
An excellent barrier effect against Cu ion drift is demonstrated using self-assembled monolayer (SAM) barrier dielectrics in which phosphorous (P) atom is contained. Three kinds of SAMs, such as P-, carbon (C-), and nitrogen (N-) containing SAMs with the identical molecular structure, were wet-chemically formed on a t…
Highly oriented vaterite CaCO 3 tablet-like arrays were formed at the air/water interface through the cooperative mineralization regulated by polypeptide and double hydrophilic block copolymer under ambient conditions. The nearly parallel arrangement of CaCO 3 vaterite tablets at the air/water interface shows the rema…
The compound 10OHF has a partially inverted phase sequence, unique among the series of $n\text{OHF}$ homologous compounds and all other known liquid crystals, with the smectic-${C}_{FI2}^{\ensuremath{\ast}}$ $(\text{Sm}{C}_{FI2}^{\ensuremath{\ast}})$ phase occurring at higher temperature than the smectic-${C}^{\ensure…
We consider the hydrodynamic effect of small particles on the dynamics of a much larger particle moving normal to a planar wall in a highly bidisperse dilute colloidal suspension of spheres. The gap h(0) between the large particle and the wall is assumed to be comparable to the diameter 2a of the smaller particles so…
Abstract The conditions of preparation of a pure YBiTi 2 O 7 phase by sol–gel were optimised. A single phase was obtained at temperature as low as 800 °C when triethanolamine/diethanolamine was used as additional ligands. The expected composition was confirmed by energy dispersive spectroscopy (EDS) and X‐ray diffract…
Abstract Poly(ε‐caprolactone) (PCL)/poly(amino ether) (PAE) blends were obtained by injection molding without any previous extrusion step in an attempt to (i) contribute to the knowledge of the relation between structure and mechanical properties in these type of blends composed of a rubbery and a glassy polymer and (…
Any technological breakthrough on storage, transportation, and distribution of hydrogen is urgently required to popularize hydrogen energy systems. In the present paper, organic chemical hydrides with appropriate characteristics (e.g., high storage capacities, facile reversibility, and being safe and cost-competitive)…
Homocitrate synthase (acetyl-coenzyme A: 2-ketoglutarate C-transferase; E.C. 2.3.3.14) (HCS) catalyzes the condensation of acetyl-CoA (AcCoA) and alpha-ketoglutarate (alpha-KG) to give homocitrate and CoA. Although the structure of an HCS has not been solved, the structure of isopropylmalate synthase (IPMS), a homolog…
The first-principles FLAPW (full potential linearized augmented plane wave) electronic structure calculations were performed for the Ag(5)Li(8) gamma-brass, which contains 52 atoms in a unit cell and has been known for many years as one of the most structurally complex alloy phases. The calculations were also made for…
Low-dimension (1D) semiconductor CdSe nanostructures, including nanosheets, nanoribbons, nanowires and branchlike, have been successfully synthesized in bulk quantities by a simple and low-cost process based on thermal evaporation of CdSe powders onto a silicon substrate. The temperature of the substrates and the conc…
Abstract Amine‐modified carbon micro/sub‐microtubes that encapsulate magnetite cores have been synthesized by decomposing a ferrocene/hexabromobenzene mixture in the presence of ammonia under solvothermal conditions at 250 °C for 24 h in a one‐step process. The as‐prepared carbon microstructures (NH 2 ‐ME‐CMTs) were 9…
Silicon nitride films were deposited by plasma-enhanced chemical-vapour deposition. The films were then implanted with erbium ions to a concentration of 8 x 10(20) cm(-3). After high temperature annealing, strong visible and infrared photoluminescence (PL) was observed. The visible PL consists mainly of two peaks loca…
Abstract The long‐afterglow phosphor SrAl 2 O 4 : Eu 2+ , Dy 3+ is liable to hydrolyze in water with deterioration of its luminescent properties. In this study, i n situ emulsion polymerization was first used to prepare phosphor coated with poly(methyl methacrylate‐ co ‐butyl acrylate) [P(MMA‐ co ‐BA)] to improve wate…
Abstract Poly(vinyl alcohol) (PVA)/water‐soluble chitosan (ws‐chitosan) hydrogels were prepared by a combination of γ‐irradiation and freeze thawing. The thermal and rheological properties of these hydrogels were compared with those of hydrogels prepared by pure irradiation and pure freeze thawing. Irradiation reduced…
Abstract The phosphorus‐containing acrylate monomer, 2‐acryloyloxyethyl diethyl phosphate (ADEP), was synthesized and applied to cotton fabric by using admicellar polymerization. Sodium dodecylbenzene sulfonate was used as the anionic surfactant. The film of polymerized monomer (PADEP) formed on the cotton surface was…
We present an accurate comparative analysis of N 2 adsorption at 77 K on nonporous silica and the pore wall surface of MCM-41 materials. The analysis shows that in the low-pressure region of N 2 adsorption obeys a peculiar mechanism governed by short-ranged forces, which makes the surface curvature effect on the N 2 a…
Abstract The morphological structure, glass transition, mechanical properties, and dynamic mechanical properties of star‐shaped solution‐polymerized styrene‐butadiene rubber (SSBR) synthesized by a multifunctional organic lithium initiator and SiO 2 ‐SSBR composite (N‐SSBR) prepared through adding a small amount of na…
A cost-effective and hazard-free sol−gel method for the synthesis of single-phase MgTiO 3 thin film is reported here, using (MgNO 3 ) 2 ·6H 2 O and TiC 16 H 36 O 4 as precursors and employing either acetic acid or acetyl acetone as the stabilizers for titanium n-butoxide. The effect of the stabilizers on the structure…