Materials Literature
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A first-principle simulation of the surface diffusion of an extra metal (Me) adatom has been performed on the corresponding 1/3 monolayer (ML) Si(111) Me-induced surfaces. Using the nudged elastic band (NEB) optimization method, the minimum energy paths and the activation energy barrier profiles for all known Me-induc…
The propagation of surface hybrid modes on a nano shell has been investigated theoretically. The effect of increasing the thickness of the metal shell on plasmon dispersion is shown. A simple form of plasmon dispersion has been obtained for m = 0. By increasing shell thickness the coupling between the inner and outer…
The advent of a wide-bandgap GaN p-n junction has enabled highly efficient blue light-emitting diodes (LEDs) in GaInN/GaN heteroepitaxy. The system also enables a much wider range of emission wavelengths. We summarize progress in epitaxial materials development of green, yellow, and orange direct-emitting LEDs that by…
Spontaneous polarization and its strain effects of bismuth titanate (BiT) with B2cb and B1a1 space groups are studied by first-principles density functional theory (DFT) calculation. B1a1 was proved to be the most stable phase structure and the spontaneous polarization is in good agreement with the experimental value.…
An on-line condition monitoring method for transmission line is proposed using electrical circuit theory and IT technology in this paper. It is reasonable that the circuit parameters such as resistance (R), inductance (L), conductance (g) and capacitance (C) of a transmission line expose the electrical conditions and…
Resonant couplings of the electronic states and the stretching vibrations of CN(-) ligands, which bridges metal ions, is investigated by resonance Raman spectroscopy for Rb(0.94)Mn[Fe(CN)6](0.98)·0.2H2O. Large excitation wavelength dependences over one order of magnitude were found for Raman peaks corresponding to dif…
Kurzfassung Die Ausscheidungshärtung von Aluminium-Legierungen erfolgt durch eine Wärmebehandlung, bei der sich insbesondere der integrierte Abschreckprozess entscheidend auf die resultierenden Festigkeits- und Verzugseigenschaften des Bauteils auswirkt. Zur Einstellung höchster Festigkeiten ist eine hohe Abschreckges…
The aim of the present chapter is to provide the reader with an update on recent advances regarding the growth, characterization, and use of InAlN layers nearly lattice-matched to GaN. This alloy is expected to permit realizing superior-quality transistors and optoelectronic devices. The state of the art of this techn…
The three-dimensional (3D) graphene networks have been prepared by annealing the mixture of graphene oxide and SiO 2 nanoparticles and then etching SiO 2. The obtained material was characterized by X-ray diffraction, scanning electron microscope and transmission electron microscopy, which revealed that 3D networks con…
In this paper, highly crystalline YF 3: Yb 3+/ Ln 3+( Ln = Er 3+, Tm 3+) microsheets were successfully synthesized by a surfactant-free molten salt method for the first time. The results indicated that the as-obtained samples belonged to orthorhombic system and exhibited microsheets morphology with side lengths of 30…
Kurzfassung Der Einsatz pressgehärteter Bauteile im Automobilbau hat in den letzten Dekaden stark zugenommen [1]. Diese Bauteile bieten dabei eine vorteilhafte Kombination aus hoher Festigkeit und großer Formgenauigkeit bei gleichzeitiger Einsparung von Gewicht. Eine Verfeinerung des Presshärtens stellt das partielle…
The 3p photoionization and subsequent Coster–Kronig type of Auger decay of initially neutral atomic gallium were studied both experimentally and theoretically. The binding energies and relative intensities of the 3p photoelectron spectrum together with a satellite structure are given. The M 2, 3 MM and M 2, 3 MN Auger…
Phenylhydrazone derivatives of 2,6-diarylpiperidin-4-ones viz., 3-methyl-2,6-diphenylpiperidin-4-one (PMP-PH) and 3-methyl-2,6-di-(9H-fluorenyl)piperidin-4-one (FMP-PH) when illuminated and protonated perform the functions of AND, OR, NOR, NAND Boolean logic gates with all optical outputs. The functions of the AND and…
A novel electrolyte thin film has been prepared by radio-frequency magnetron sputtering using a Li–B–P–O target in a pure N 2 atmosphere at various temperatures. The results indicate that the thin film deposited at room temperature is amorphous and its surface is smooth, dense, and uniform with the average thickness <…
Viscoelastic properties of symmetric poly(styrene- b -2-vinylpyridine)s (SP), whose thermorheological properties of components are identical, are studied over a wide range of molecular weight M for nanophase separated melts. Plateau modulus G 0 N for SP was almost the same with those of components. At low angular freq…
The synthesis of a series of non-symmetrically substituted zinc(II)-salophenpyridyl [salophenpyridyl = N,N′-2-pyridylenebis-(salicylideneimine)] complexes obtained by reacting RO-substituted salicylaldehydes (R = C10H21 or C16H33) and 2,3-diaminopyridine is here reported. The molecular aggregation behaviour of these d…
This paper is devoted to the study of the palynological content of the Retamito coal deposit. This deposit is located on the eastern base of dam in Rio del Agua, 4 km East from Pedernal vilIage, route 135, San Juan Province. It is suggested to use the name Las Crucecitas for this locality in order to find it easier in…
CrCuN films were deposited under different substrate temperatures by direct current (DC) magnetron sputtering. The structure and wear resistance of the films were then studied. The substrate temperature has almost no effect on the film composition, phase constitution and preferred orientation. The CrCuN films have 3 a…
We address the statistical mechanics of randomly and permanently crosslinked networks. We develop a theoretical framework (vulcanization theory) which can be used to systematically analyze the correlation between the statistical properties of random networks and their histories of formation. Generalizing the original…
This paper presents the prediction of thermal and evaporative resistances of multilayered fabrics meant for cold weather conditions using artificial neural network (ANN) model. Thermal and evaporative resistances of fabrics were evaluated using sweating guarded hot plate method. The significance and interdependency of…