Materials Literature
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Abstract Defined n‐doping of carbon nanotubes can find potential application in nanoelectronics and sensors. An efficient doping can be achieved by substituting Carbon by heteroatoms such as Nitrogen. We explored the formation process of N doped single‐walled nanotubes within hot wall chemical vapor deposition employi…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTNovel Poly(acrylic acid)-Mediated Formation of Composited, Poly(3,4-ethylenedioxythiophene)-Based Conducting Polymer NanowiresXuping Sun and Matthias HagnerView Author Information Fachbereich Chemie and Fachbereich Physik, Universit…
A mechanochemical method is developed for preparing quasicrystalline powdered alloys in the Al-Cu-Fe system and related materials. Quasicrystals are designed and proposed for use in practice as filling materials for metal and polymer matrices. The structure and mechanical properties of the designed materials are descr…
Hoodia gordonii, family Asclepiadaceae, is a succulent plant and is traditionally used in southern Africa for its appetite-suppressant properties. A high-performance liquid chromatographic (HPLC) method with UV detection for analysis of 11 oxypregnane glycosides from H. gordonii has been developed. The simultaneous an…
Abstract Eight new benzoylated gentisyl alcohol (=2‐(hydroxymethyl)benzene‐1,4‐diol) glucosides, itosides A–H ( 1 – 8 ), together with the new pyrocatechol (=benzene‐1,2‐diol) glycoside itoside I ( 9 ) were isolated from the bark and twigs of Itoa orientalis (Flacourtiaceae). In itosides B–D ( 2 – 4 ), the gentisyl al…
The failure of polyester and phenolic pultrusions under tensile and compressive load and a one sided heat flux of 50 kW m−2 has been studied. A thermal/mechanical model, based on the Henderson equation and laminate theory, has been used to model their behaviour. In tension, significant load bearing capacity was retain…
We investigated, by means of dielectric spectroscopy, the relaxation dynamics of glass forming binary mixtures composed by the quite rigid polar molecules tert-butylpyridine dissolved in the apolar solvent tristyrene. By changing the relative concentration of the components we observed a transition from a relaxation s…
Abstract Polyhedral oligomeric silsesquioxane (POSS) was synthesized with hydroxyl functional groups and the nanoparticles were characterized by infrared spectroscopy and transmission electron microscopy. They were found to have an average diameter of 50 nm.The effect of these synthesized POSS nanoparticles as curing…
Diatoms are used as environmental indicators in the Florida Everglades, a large subtropical wetland highly impacted by phosphorus pollution. However, the taxonomy of the diatom flora, a mix of temperate and tropical diatoms, is understudied. Therefore, we analyzed the taxonomy of 71 diatom taxa collected in Water Cons…
The Zn-Mg alloys with Mg additions of 35%, 40% and 45% (mass fraction) were prepared by conventional casting method, with the aim to develop new biodegradable materials. The effects of cooling rate and composition on the microstructures, hardness and corrosion resistance were studied by XRD, SEM, microhardness and cor…
Plasma electrolytic oxidation (PEO) is a unique coating technology, which enables fabrication of high performance ceramic surfaces on the light metals, with thickness, topography, composition and structure controllable by the process parameters. Here the growth of anodic coatings on titanium, important due to their bi…
Zinc oxide films with ordered lamellar structures were anodically deposited in basic media using an interfacial surfactant templating method. Sodium dodecyl sulfate (SDS) and lauric acid served as efficient structure-directing agents and incorporated a lamellar structure with d(001) = 3.5 and 2.8 nm, respectively, int…
Abstract We report characterization by absorption and photoluminescence excitation (PLE) spectroscopy of carbon nanotube solutions, which are then used for nanotube‐based composite preparation. PLE shows the presence of bundles in the solution. The composite show a saturation intensity of 5 MW/cm 2 and is used in a fi…
The effect of surface states of substrate and additives on copper electrodeposition for thin film applications was investigated. Titanium substrate states were mechanically and chemically moderated and several additives such as Arabic gum, hydroxyl ethyl cellulose, and chlorine were used during electrodeposition proce…
In the high flux test module of the International Fusion Materials Irradiation Facility, temperature control of irradiated specimens are done by gas cooling and electric heating. The width of cooling channels is supposed to be 1 mm in the module vessel which is a rectangular duct with wall thickness of 1 mm. Since the…
Abstract Oxidation usually dominates high-temperature corrosion reactions, but under certain conditions, some alloys may be affected by nitridation as well. This chapter explains why nitridation occurs and how it attacks various metals, in some cases, penetrating deeper than oxidation. It provides images and data desc…
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The time and stoichiometric ratio dependence on dissolution of Cu from Cu(I)O and Cu(II)O and metallic Cu was investigated for a series of known Cu chelators. This was monitored by ICP-OES and UV-VIS. A notable difference in the rate of reaction for Cu(I)O vs Cu(II)O was observed and the impact of a copper adduct prec…
Thermal conductivity of four binary liquid mixtures of polyethers with n-dodecane have been computed using a new approach. Decent agreement has been found between the experimental and estimated values of thermal conductivity for all systems.
The temperature dependence of the heat capacity of crystalline nickel zirconium phosphate C ° p = f ( T ) was measured over the temperature range 6–664 K. The experimental data obtained were used to calculate the standard thermodynamic functions of Ni 0.5 Zr 2 (PO 4 ) 3 from T → 0 to 664 K. The standard entropy of pho…