Materials Literature
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In this paper, we developed nc-Al/a-Al2O3 nanocomposite thin films using magnetron sputtering. The nc-Al/a-Al2O3 films were sputtered on p-type Si substrates from pure Al target in gas mixture of Ar and O2. X-ray photoelectron spectroscopy and high resolution transmission electron microscope studies confirm that the n…
Homogeneous and doped nanocrystalline ZnO powders (30-200 nm) were synthesized by spray pyrolysis technique. The spray pyrolysed powders were calcined in the temperature range of 500-750 degrees C. Formation of insulating pyrochlore phase started from 700 degrees C during the calcination itself. The calcined powders w…
The ZnO nanostructures were synthesized on Si(100) substrates by chemical vapor deposition (CVD) method. Different Morphologies of ZnO nanostructures, such as nanoparticle film, micro-pillar and micro-nano multi-structure, were obtained with different conditions. The results of XRD and TEM showed the good quality of Z…
Carbon based films can combine the properties of solid lubricating graphite structure and hard diamond crystal structure, i.e., high hardness, chemical inertness, high thermal conductivity and optical transparency without the crystalline structure of diamond. Issues of fundamental importance associated with nanocarbon…
We report on the unusual behavior of Fe(n) clusters (n < or = 6) supported on ultrathin oxide films. When the film is grown on a Mo(001) support, the cluster magnetic moments exhibit a similar quenching as on the bare MgO(001) surface while on MgO/Fe(001) films the magnetization is enhanced due to a charge transfer fr…
DOI: 10.2514/1.36886 Electroactive polymer synthetic jets (E-jets) are a new lightweight low-power means of generating a synthetic jet forlow-speed active flowcontrolapplications.Theactuationmethodusesathin(30 �m )prestrainedlowmodulus and a circular-composite-dielectric acrylic elastomer membrane. The membrane is exc…
Multi-walled carbon nanotubes and other carbon nanostructures have been grown using catalytic thermal chemical vapor deposition method in a horizontal tubular quartz furnace at atmospheric pressure. The mechanisms of nanotubes/nanofibers nucleation and growth are analyzed. A new model explaining the nanotube nucleatio…
Carbon nanotubes with different structures were catalytically synthesized on Ni coated SiO2/Si substrate in a Direct Current Plasma Enhanced Chemical Vapour Deposition system, in which C2H2 acted as the carbon source and NH3 as the etchant gas. A Scanning Electron Microscope study showed that carbon nanotubes were all…
In this study, two types of the polyimide-silica hybrid thin films, 6FDA-ODA/SiO2 (FS0-FS50) and PMDA-ODA/SiO2 (PS0-PS40), with different silica content were synthesized by using the sol-gel method. TGA analysis showed that the thermal decomposition temperatures (T(d)) of FS and PS hybrid films were in the range of 45…
Abstract By using (R)‐1‐phenylethylamine as a chiral molecule and 1‐pyrenesulfonic acid as a fluorescent molecule, a chiral supramolecular organic fluorophore composed of a 2D layered structure was successfully developed. This chiral supramolecular fluorophore possesses circularly polarized luminescence (CPL) properti…
Single crystals of Pr(5)Si(3)N(9), penta-praseodymium trisilicon nona-nitride, were obtained by the reaction of elemental praseo-dymium with silicon diimide in a radio-frequency furnace at 1873 K. The crystal structure consists of a chain-like Si-N substructure of corner-sharing SiN(4) tetra-hedra. An additional Q(1)-…
Easy to prepare fluoride ion sensors bearing OH and NH groups as binding sites and nitrophenyl group as a chromophore [2-[(4-nitrophenylimino)methyl]-4-methylphenol (1), 2-[(4-nitrophenylamino)methyl]-4-methylphenol (2), 2-[(2,4-dinitrophenylimino)methyl]-4-methylphenol (3) and 2-[(2,4-dinitrophenylamino)methyl]-4-met…
Based on density functional theory, we systematically studied the electronic and magnetic properties of the real experimental structural phase BiCrO(3) with the space group C 2/c. It is found that the ground state is a moderately correlated Mott-Hubbard insulator with G-type antiferromagnetic structure, which is in ag…
The quality of 3D QSAR models obtained using extremely simple descriptors was examined for nine popular data sets, including the well-known set of 31 steroids, which for 20 years has been the standard for benchmarking 3D QSAR methods. The atomic numbers of atoms coinciding with vertices of the molecular alignment as w…
Abstract Der Verlauf des Photobleichens zeigt an, dass die Excitonendelokalisierungslänge in direkt verknüpften Porphyrinketten (siehe Bild) ungefähr vier bis fünf Porphyrineinheiten beträgt. Dieses Resultat gibt Einblick in den Mechanismus der Lichtübertragung im Festkörper und belegt, dass Porphyrinanordnungen als m…
Ultra thin and smooth nano crystalline diamond films were fabricated with electrostatic self-assembly seeding of explosively synthesized nano-diamond particles. Hard aggregates of nano-diamond particles were crushed by high revolution attrition milling at 1000 RPM to regulate the particle size. Through this process, c…
Three new complexes have been prepared based on 2-(1H-tetrazol-1-yl) acetic acid (Htza) and the Ln(III) salts La(NO)3 · 6H2O, PrCl3 · 6H2O, and NdCl3 · 6H2O. Their crystal structures have been characterized by single crystal X-ray crystallography. In each instance, the tetrazole ligand is both bridging and chelating-b…
The complex [MnIV(napbh)2] (napbhH2 = N-(2-hydroxynaphthalen-1-yl)methylenebenzoylhydrazide) reacts with activated ruthenium(III) chloride in methanol in 1 : 1.2 molar ratio under reflux, giving heterobimetallic complexes, [MnIV(napbh)2RuIIICl3(H2O)] · [RuIII(napbhH)Cl2(H2O)] reacts with Mn(OAc)2·4H2O in methanol in 1…
This paper presents the study of the effect variations in the heat effluence from a solid oxide fuel cell (SOFC) has on a gas turbine hybrid configuration. The SOFC is simulated through hardware at the U.S. Department of Energy, National Energy Technology Laboratory (NETL). The gas turbine, compressor, recuperative he…
Recent experiments [F. E. Pinkerton, M. S. Meyer, G. P. Meisner, M. P. Balogh, and J. J. Vajo, J. Phys. Chem. C 111, 12881 (2007) and J. J. Vajo and G. L. Olson, Scripta Mater. 56, 829 (2007)] demonstrated that the recycling of hydrogen in the coupled LiBH4/MgH2 system is fully reversible. The rehydrogenation of MgB2…