Materials Literature
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The systematic investigation of the role played by electrons and holes during the erase operation of TANOS memories by means of charge separation experiments and physics-based simulations is reported for the first time. We determined a dominance of electrons back-tunneling in the first part of the transient, and domin…
Non-covalent interactions between cationic gold nanoparticles and an anionic coiled-coil peptide were harnessed for coiled-coil mediated self-assembly of gold nanoparticles (GNPs).
The stretching, bending, and torsional force-field parameters for modelling Si (111) surfaces functionalized with alkylamines have been derived from energies, optimized geometries and harmonic frequencies obtained by accurate quantum mechanical calculations. Addition of inter-chain non-bonded parameters from a literat…
Pt/mixed and reactive insulator/AlGaN metal−insulator−semiconductor (MIS)-type hydrogen sensors were fabricated using a photoelectrochemical oxidation method to directly oxidize AlGaN employed for increasing the sensor response to hydrogen gas. When hydrogen gas was sensed, the MIS hydrogen sensors exhibited a larger…
Co epitaxial thin films were prepared on MgO substrates of (100), (110), and (111) planes by molecular beam epitaxy. The growth process, the film structure, and the magnetic properties were investigated. The nucleation of Co crystal on MgO substrate varies depending on the substrate orientation and the substrate tempe…
In this work the complex permittivity and microwave absorption of toxins/sewage gases and functionalized single-walled carbon nanotube sensors in a perturbed microwave resonant cavity are studied with the aid of a kinetic model. The results show that the real permittivity decreases and the imaginary permittivity incre…
The CaBe2Ge2-type antimonide EuPd2Sb2 (P4/nmm, a = 462.43(7), c = 1056.1(2) pm) was synthesized by induction melting of the elements in a sealed tantalum tube. Temperature-dependent magnetic susceptibility measurements have revealed Curie-Weiss behavior with an experimental magnetic moment of 7.93(1) μB/Eu atom, indic…
In order to analyze the time‐dependent spring‐back behavior of the aluminum alloy 6022‐T4 sheet, the viscoelastic/plastic constitutive law was applied by utilizing a linear viscoelastic/plastic model previously developed. As for the plastic deformation, the combined isotropic‐kinematic hardening law was used to repres…
A Mn–K heterometallic MOF, [KMn(I3)(L)2(H2O)]n (HL = D-saccharic acid 1,4-lactone) (1), has been synthesized from a benzene solution. X-Ray single crystal structural analysis shows that MOF 1 is the first MOF based on the L− ligand and belongs to the chiral space group P1. MOF 1 features an unusual (3,7)-connected tcj…
The structure, conformation and orientational order of the mesogen I22 have been studied by proton, carbon-13 and deuterium 1D and 2D-NMR spectroscopies at natural abundance and at various magnetic fields when in the nematic phase, the isotropic phase close to the nematic-isotropic phase transition, and as a solute in…
An electroactive polymer, poly[9,9-bis(p-isopropylphenylsulfanyl)fluorene-alt-N-decylcarbazole] (P2) was prepared. Electrochemical fluorodesulfurization was carried out using a P2-coated platinum anode. From 1H-NMR, EDX analyses, about 50% fluorodesulfurization at the 9-position of fluorene was confirmed. The UV-vis a…
Purpose: With the use of the Arc-PVD and Arc-EB PVD hybrid method, the chromium carbide coatings were deposited on steel substrate. Two kinds of coatings were obtained. The nanostructure coatings were formed by deposition of chromium carbide films by Arc PVD evaporation technique. The multilayer coatings were produced…
The European standard EN 1337 on bridge bearings is supported by experimental studies dating to the ‘70s and the ‘80s, which are not suitable to account for recent issues relevant to operations of steel–PTFE bridge bearings under extreme conditions, like high environment temperatures or high velocities of sliding. The…
The theoretical substantiation of application of nonferrous metals for decrease in deterioration of rubbing surfaces is resulted. Dependence of factor of a friction on properties of used metal is established. The choice of a material for bimetallic surfaces is proved.
Stacking faults (SFs) and the 3C‐6H polytypic transition in thick (001)‐oriented 3C‐SiC crystals are studied by means of diffuse X‐ray scattering. The presence of SFs lying in the {111} planes gives rise to streaked reciprocal lattice points with the streaks being parallel to the <111> directions. In the case of low S…
Recycling organic waste in agricultural soils is a valid solution. We performed short‐term experiments to investigate the fate of urban sludge and composts, in mine spoils, cultivated or uncultivated, and reclaimed soils located in Florence and Milan, Italy. The samples, either treated or untreated, were fractionated…
The performance of Proton exchange membrane fuel cell (PEMFC) has been experimentally investigated. An experimental set-up was designed to study the effects of operating parameters such as cell temperature, gas humidification, and cell operating pressure on the performance of fuel cell. The results indicated that the…
Recently, we have investigated the recovery of resources from the waste material of manufacturing printed circuit board. As printed circuit board or chip has become light, small, high reliability, it is necessary to reuse and recover resources from them. Especially, the printed circuit board that has been used for imp…
Silicon germanium alloys (SiGe) have long been used in thermoelectric modules for deep-space missions to convert radio-isotope heat into electricity. They also hold promise in terrestrial applications such as waste heat recovery. The performance of these materials depends on the dimensionless figure-of-merit ZT (= S2σ…
A novel micro-micro/mesoporous aluminosilicate ZSM-5-Y/MCM-41 composite zeolite with a MCM-41 type structure was synthesized through a novel process of the self-assembly of CTAB surfactant micellae with silicaalumina source originated from alkaline treatment of ZSM-5 zeolite. The physical properties of the ZSM-5-Y/MCM…