Materials Literature
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[meso-Triaryl-21,23-didehydro-23H-5-oxaporphyrinato](trifluoroacetato)zinc(II) was prepared by the reaction of meso-triarylbilindione with acetic anhydride and zinc acetate, and it was isolated as a trifluoroacetate salt. The X-ray crystallographic study demonstrated that the trifluoroacetate anion was coordinated to…
Abstract Poly(methyl methacrylate) (PMMA)/montmorillonite (MMT) nanocomposites were prepared by a new one‐pot technique, where the hydrophilic Na‐MMT layers were decorated with hydrophobic 1‐dodecyl‐3‐methylimidazolium hexafluorophosphate (C 12 mimPF 6 ) ionic liquid in situ during melt blending with PMMA and intercal…
PII proteins are central signal processing units for the regulation of nitrogen metabolism in bacteria, archaea and plants. They act in response to cellular energy, carbon and nitrogen availability. The central metabolites ATP, ADP and 2-oxoglutarate, which indicate cellular energy and carbon/nitrogen abundance, bind…
We perform computer simulations to explore the suprastructures and their formation mechanism in the length-dependent assembly of a stiff polymer chain on the carbon nanotube surface. Three types of local conformations, that is, helical wrapping along the nanotube threadline, nonhelical loop, and straight extension alo…
Covalent functionalization of diameter sorted SWCNTs with porphyrins (MP), and photochemistry to establish nanotube diameter-dependent charge separation efficiencies are reported. The MP-SWCNT(n,m) [M=2H or Zn, and (n,m)=(7,6) or (6,5)] nanohybrids are characterized by a variety of spectroscopic, thermogravimetric, TE…
The work described in this paper is related to the effect of adding carbon nanotubes (CNT) on the mechanical properties of polymer-cement composites. A full factorial design has been performed on 160 samples to identify the contribution provided by the following factors: polymeric phase addition, CNT weight addition a…
Abstract Conducting composites of polyaniline doped with dodecylbenzenesulfonic acid (PAni.DBSA), carbon black (CB) and poly(styrene‐ b ‐styrene‐butadiene‐ b ‐styrene) (STF) as supporting matrix were prepared by in situ polymerization. The influence of components and composition (% w/w) on the electromagnetic properti…
Abstract The breath‐figures self‐assembly process was studied. Polystyrene and polycarbonate were dissolved in a diversity of solvents including, acetone, dichloromethane, chloroform, carbon tetrachloride, tetrahydrofuran, toluene, xylenes, carbon disulfide, and N‐N dimethylformamide, and then were evaporated in a hum…
We have systematically investigated the effect of annealing on the superconductivity of the iron chalcogenide Fe 1+ y (Te 1− x Se x ). The atmospheres used for annealing include O 2 , N 2 , I 2 vapor, air and vacuum. We observed that annealing in O 2 , I 2 and air could enhance the superconductivity of underdoped samp…
Abstract Hydrolysis of waste polyethylene terephthalate (PET) flakes obtained from grinding postconsumer bottles was carried out at 200–230°C and molar ratios of PET/H 2 O were taken as 1/5; 1/10; 1/20. The reaction products, when extracted with boiling water, yielded a water soluble crystallizable fraction (WSCF) and…
We show that K(2)ZnSn(3)S(8) is a phase-change system that exhibits tristability. Kinetic and thermodynamic forms of different compounds in the K/Zn/Sn/S system have been synthesized and thoroughly characterized. We report an example where slow and rapid cooling of a melt of K(2)CO(3)/S/Sn/Zn leads to different kineti…
L-Proline is one of Mother Nature's cryoprotectants. Plants and yeast accumulate proline under freeze-induced stress and the use of proline in the cryopreservation of biological samples is well established. Here, it is shown that L-proline is also a useful cryoprotectant for protein crystallography. Proline was used t…
Abstract Highly doped n-type ZnO films have been grown on n-type and p-type Si substrates by atomic layer deposition (ALD). Transmission electron microscopy shows columnar growth of the ZnO films with randomly oriented grains and a very thin interfacial layer of SiO x ( x ⩽ 2) with a thickness below 0.4 nm to the Si s…
Epitaxial Fe?Te?Se thin films were deposited by pulsed laser deposition at 250?600??C on SrTiO3 (100), MgO (100), LaAlO3 (100) and CaF2 (100) single crystal substrates. The best superconducting film was grown on CaF2: ?K and ?K with Tdep?=?300??C and 3?Hz. Critical current density Jc (T?=?4.2?K) was 0.41???106?A?cm?2…
This work investigates the study of the experimental weldability in magnetic pulse welding process of a one material assembly (aluminium AA6060T6) and a dissimilar metal couple (aluminium6060T6/copper). The weld quality is defined using a destructive process allowing measuring the weld dimension. A diagram charging vo…
A thorough understanding of thermal effects on the physicochemical properties of layer-by-layer (LbL) assembled multilayers is crucial in utilizing these films in a variety of applications. In this work, we investigate the effect of thermal treatment on cross-linking and swelling of a hydrogen-bonded multilayer film m…
Study of elastic properties of aero-engine metallic materials is of paramount importance because it forms one of the foundations of engineering design of components. Nine isotropic aero-engine metallic materials were studied for their elastic properties for a temperature range varying from ambient to operating limit.…
To elucidate the mechanism as to why alcoholic beverages can induce superconductivity in Fe 1+ d Te 1− x S x samples, we performed component analysis and found that a weak acid such as an organic acid has the ability to induce superconductivity. Inductively coupled plasma spectroscopy was performed on weak acid soluti…
All-atom models are essential for many applications in molecular modeling and computational chemistry. Nonbonded atomic contacts much closer than the sum of the van der Waals radii of the two atoms (clashes) are commonly observed in such models derived from protein crystal structures. A set of 94 recently deposited pr…
Results on Al-induced crystallization of amorphous Ge (a-Ge) deposited by vacuum thermal evaporation techniques under thermal annealing in N(2) atmosphere are presented in detail. The a-Ge crystallization and fractal Ge pattern formation on the free surface of annealed Al/Ge bilayer films deposited on single-crystal S…