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Showing 1 to 16 of 16 for “"Hexagonal structure"”.
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Solid transformations and premelting phenomena in fluorite structures and the system SrCl₂BaCl₂
… and SrCl<sub>2</sub> are very similar. The structures expand normally at lower temperatures and depart substantially from linearity at higher temperatures, because of formation of defects and disordering of anions. At high temperatures CaF<sub>2</sub> and BaF<sub>2</sub> react with water …
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Structure and Property of Polybutylene, Polypropylene and Polyvinylidene Fluoride Crystallized From the Glassy State and Structure-Property - Processing Relationships of Polypropylene - Polybutylene Blends
… (PP) and polyvinylidene fluoride (PVF(,2)). The structure and properties of the as-quenched and subsequently crystallized samples were characterized by various techniques. The glass has no structure larger than 30 (ANGSTROM). PB crystallizes from the glass into tetragonal structure (II) at ca. …
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Synthesis and characterisation of hybrid Zn0-carbon nanostructures for potential applications in hydrogen storage
… 129.15 nm, respectively. ZnO-CNFs retained the hexagonal structure of ZnO NRs when annealed at 500 to 700 °C. When the temperature was raised to 800 °C the ZnO-CNFs completely lost the hexagonal structure of a template material. Chemical compositions of all samples prepared were determined using …
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Phase change optical recording - preparation and X-ray characterization of GeSbTe and AgInSbTe films
… amorphous Ge2Sb2Te5 films crystallize to a cubic structure followed by an hexagonal structure upon further annealing. Both Ge4Sb1Te5 and Ag5.5In6.5Sb59Te29 films crystallize in only one phase namely cubic and hexagonal structure, respectively. The cubic structures for both Ge2Sb2Te5 and Ge4Sb1Te5 …
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Robust Number Plate Detection Algorithms
… histogram-based image matching technique on a hexagonal image structure is investigated. Gevers' idea of using Colour Ratio Gradient (CRG) for robust object matching is redefined on hexagonal structure, arid a novel Symmetric Colour Ratio Gradient (SCRG) method is developed. Experimental …
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Quantum chemical calculations of transition metal oxynitrides
… of the other oxynitrides are predicted. The structure changes from the rocksalt structure for the early 3d transition-metal oxynitrides Sc-Mn to the zinc blende structure for the later ones Fe-Ni. This phenomenon can be explained in a qualitative way by a detailed chemical bonding analysis …
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On the spheroidal graphite growth and the austenite solidification in ductile irons
… nucleation events during solidification.</p><p>Structures in a graphite nodule varied depending on the growth stages of the nodule in ductile iron. Curved graphene layers appearing as faceted growth ledges swept circumferentially around the surface of a graphite nodule at early growth stages. …
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Energetics of neutral interstitials in germanium
… for 216 atom systems. Formation energies for hexagonal, tetragonal, and split/dumbbell structures are found to be 5.3 eV, 6.1 eV, and 4.7 eV, respectively; a significant increase over predictions from Density Functional Theory (DFT). This indicates a large error on the part of DFT, DMC, or …
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Fabrication, characterisation, and optical applications of electrochemically deposited nanostructured IrOx films
In this work, nanostructured iridium oxide films were fabricated by electrochemical deposition within a template made with polystyrene spheres on gold substrates. SEM pictures show that the nanostructured IrOx films have a very ordered hexagonal structure. To our knowledge, this is the first report …
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Oberflächenqualität peritektisch erstarrender Kohlenstoffstähle : Vergleich zwischen Strangguss und Bandguss
… distinguish between the casting roll surfaces structure and the range of carbon content. All other process parameters were constant. The casting roll surface was developed from a fine, hexagonal open structure to a coarse hexagonal structure. The structure is regular and was produced by …
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Thin film solar cells using all-electrodeposited ZnS, CdS and CdTe materials.
… the deposition electrolyte. The CdS layers show hexagonal structure with n-type electrical conduction while CdTe layers show cubic structure with n-type electrical conduction, in the cathodic deposition potential range explored.Using CdTe as the main absorber material, fully fabricated solar cell …
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Combinatorial material synthesis applied to Ge-Sb-Te based phase change materials
… They can be characterized by two stable physical structures that exhibit significantly different optical properties. Further optimisation of this technology requires the determination of crystallisation kinetics and comprehensive understanding of the underlying mechanisms. To speed up the search …
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Statistics, geometry, and mechanical states in cellular matter
… Drosophila compound eye exhibits regular hexagonal structure of facets called ommatidia but certain genetic mutations disrupt regulation and lead to generation of topological defects. With conventional order measures in statistical mechanics, we demonstrate that translational order …
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Development of Graphene Based Gas Sensors
Graphene is a two dimensional structure of sp2 hybridized carbon atoms arranged in a hexagonal structure. The use of graphene in any application begins with the challenge of producing high quality graphene. The quality, size, and structure of graphene films vary with the desired applications. While …
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Ionene and ionene alkyl sulfate stoichiometric complexes
… state they assemble spontaneously into mesogenic structures. The [X,Y]-ionenes ([(CH2)XN+(CH3)2(CH2)YN+(CH3)2]nBr-2n) investigated formed stoichiometric complexes with alkyl sulfates. The ionene alkyl sulfate complexes display mesogenicity, i.e. optically isotropic dry complexes underwent …
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Interactions between integral membrane proteins and the cytoskeleton in red blood cells studied by measured molecular lateral diffusion
… which produces gross defects in the normal hexagonal structure of the cytoskeleton). Immobilization of band 3 resulted only for anti-glycophorin A ligands R10 (10F7) and B14. These ligands bind close to the bilayer surface and produce the great-est increase in membrane rigidity. Ligand 9A3 …