Materials Literature
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This chapter contains sections titled: Introduction Experimental Procedure Results and Discussion Conclusions
The item deals with the possibilities of utilization HVOF coatings in thermal cyclic loading conditions. There were evaluated three types of coatings based on WC-Co, WC-Co-Cr and Cr3C2-25NiCr. The quality of coatings was evaluated in terms of their adhesion as sprayed and also during the cyclic thermal loading, EDX an…
Si doping is proposed to be an effective way to improve the amorphous stability of Bi2Te3 thin film. Structural changes in doped crystalline phases are revealed by the bonding nature given by x-ray photoelectron spectroscopy results. Based on ab initio simulations, the energy, electronic and structural changes induced…
Magnetic tunnel junctions based on manganites can exhibit a high tunneling magnetoresistance ratio due to the almost full spin polarization at the Fermi level. However, the performances of magnetic tunnel junction devices are also strongly linked to their noise characteristics. Here, we present a low frequency noise s…
Fe/Zr-codoped In2O3 thin films were grown on yttria stabilized zirconia substrates by pulsed laser deposition. The deposited films exhibited ferromagnetism at room temperature with strong magnetic anisotropy, which was influenced by a magnetostriction effect under tensile stress (i.e., c/a > 1). Both the saturation ma…
This chapter contains sections titled: Introduction Experimental Results and Discussion Conclusion Acknowledgement
The facile coupling of azobenzene dyes to the quadruply hydrogen-bonding modules 2,7-diamido-1,8-naphthyridine (DAN) and 7-deazaguanine urea (DeUG) is described. The coupling of azobenzene dye 2 to mono-amido DAN units 4, 7, and 9 was effected by classic 4-(dimethylamino)pyridine (DMAP)-catalyzed peptide synthesis wit…
Abstract Poly(vinyl alcohol) (PVA) gels physically crosslinked by microcrystallites were prepared by a cast‐drying method using PVA powders with different degrees of polymerization (nDP) between 300 and 2400 and hydrolysis (rDH) between 79.5 and 98.5 mol %. Polymer elution of gels in a limited amount of water was inve…
Hydrogen storage properties of the (nLiAlH4 + LiNH2) hydride composite where n = 1, 3, 11.5 and 30, synthesized by high energy ball milling have been investigated. The composite with the molar ratio n = 1 releases large quantities of H2 (up to ~5 wt.%) during ball milling up to 100–150 min. The quantity of released H2…
A crucial consideration in organic devices is the role of the interface between a metal electrode and the active polymer material. Here, we use the conjugated polymer poly[2-methoxy-5-(2-ethylhexyl-oxy)-1,4-phenylene-vinylene] (MEH-PPV) with model gold and silver electrodes to perform surface-enhanced Raman scattering…
Learning from the classical crystallization mode and the conventional oriented attachment mode, we demonstrate another understanding of the crystal growth of inorganic nonmetallic nanomaterials in solution from the perspective of coordination polyhedra. A family of β-Ni(OH) 2 hourglass-like nanostructures is controlla…
We report density functional calculations addressing the electronic structure and magnetic properties of delafossite PdCrO${}_{2}$. We find substantial magnetic interactions in the $c$-axis direction as well as beyond first nearest neighbors in-plane, so that PdCrO${}_{2}$ is a three-dimensional (3D) frustrated antife…
Crystal-melt interface morphological transformation of differently oriented SiGe crystals with different Ge concentrations was observed, and the effect of Ge concentration on critical growth velocity (Vc) for the interface morphological transformation was investigated. A planar-to-faceted morphological transformation…
The weight gain method is employed to study the vertical capillary flow of wetting liquids in polyester nonwoven fabrics with different basis weights. The quantity of liquid absorbed by capillarity...
Paraconductivity of the optimally K-doped SrFe 2 As 2 superconductor is investigated within existing fluctuation mechanisms. The in-plane excess conductivity has been measured in high-quality single crystals, with a sharp superconducting transition at T c = 35.5 K and a transition width less than 0.3 K. The data have…
Industrial discharges from manufacturing streptomycin sulfate (SS) are inhibitory to biological wastewater treatment and need to be stripped of residual SS. For effective SS recovery from the wastewater, a two-stage foam separation technology was investigated using a column with a vertical ellipsoid-shaped channel (VE…
A mixture of hard-sphere particles and model emulsion droplets is studied with a Brownian dynamics simulation. We find that the addition of nonwetting emulsion droplets to a suspension of pure hard spheres can lead to both gas-liquid and fluid-solid phase separations. Furthermore, we find a stable fluid of hard-sphere…
Abstract Malic acid, a molecule containing two carboxyl groups per molecule, was grafted to polyurethane (PU) through a carbamate group. The polymer was transformed to the anionic carboxylate form to observe the impact on the tensile strength and shape recovery of the PU. The electrostatic repulsion of the carboxylate…
This chapter contains sections titled: Introduction Calculations Results Conclusion Acknowledgements
Organic heterojunctions comprising of n-type fluorinated copper-phthalocyanine (F16CuPc) and p-type cobalt-phthalocyanine (CoPc) layers were prepared on (001) LaAlO3 substrates. In the entire temperature range of 300–30 K, F16CuPc/CoPc heterojunctions showed an ohmic conduction with three order of magnitude lower resi…