Materials Literature
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This paper reprots that with Ni-based catalyst/solvent and with a dopant of NaN 3 , large green single crystal diamonds with perfect shape are successfully synthesized by temperature gradient method under high pressure and high temperature in a China-type cubic anvil high-pressure apparatus (SPD-6 × 1200), and the hig…
A facile solution route has been developed to synthesize nanoparticle-aggregated octahedral copper hierarchical nanostructures. The formation of these novel octahedral copper hierarchical nanostructures can be attributed to a gas bubbles assisted aggregation mechanism. Based on the shape evolution and corresponding gr…
It is shown that anodic oxide coatings with a thickness of several to 300 νm can be obtained on titanium by varying the charge spent on ( Q ). The prevailing phase in the coatings is ZrO 2 in monoclinic and tetragonal modifications. The content of zirconium in the layers is up to 20 at %. Distributions of titanium, zi…
In a free-electron model, an electron crossing a mathematical plane inside a conductor can be characterized by the energy components associated with its motion normal and parallel to the plane. These components define a two-dimensional “energy-space.” The “supply density” is defined as the electron current crossing th…
Ni oxyhydroxide (NiOOH) thin films were prepared by reactive sputtering in an atmosphere of H 2 O gas, and the effects of sputtering gas pressure on their electrochromic properties in KOH aqueous electrolyte were studied. The largest optical density change was obtained for the thin films deposited under high sputterin…
The rate of Auger recombination in silicon nanocrystals is calculated in the context of the approximation of the envelope function. It is shown that the dependence of the rate on the crystallite radius is an essentially unsteadily varying function with characteristic variations within three or four orders of magnitude…
Under cooling, a liquid can undergo a transition to the glassy state either as a result of a continuous slowing down or by a first-order polyamorphous phase transition. The second scenario has so far always been observed in a metastable liquid domain below the melting point where crystalline nucleation interfered with…
The effect of elastic stresses (compressive, tensile) on the magnetic properties of epitaxial GaMnAs layers prepared by laser deposition of solid-state targets in a gas atmosphere on different buffer sublayers (In x Ga1 − x As and In x Ga1 − x P) and substrates (GaAs, InP) has been investigated. It has been establishe…
We studied the effects of added metallic elements in the Ag alloy layers of the indium zinc oxide (IZO)/Ag alloy/IZO transparent conductive multilayer system on the optical and electrical properties of the multilayer. The correlation between the thickness of the Ag alloy layers and the optical and electrical propertie…
A transition to a superconducting state was recently observed in the binary alloy of FeSe 1-x Te x system where TC rises with increasing x. The substitution of the larger Te for Se ion results in no additional charges but increases the internal chemical pressure. Earlier studies suggested that the crystal structure ma…
Interactions between hydrophobic materials and aqueous media was studied using the analysis of specific surface resistance. Methods for measuring surface resistance are developed for both samples exposed in vapors and those in direct contact with liquid. As a result of the measurements performed, it is confirmed that…
We present an experimental technique to measure the diffusivity of supercooled liquids at temperatures near their T(g). The approach uses the permeation of inert gases through supercooled liquid overlayers as a measure of the diffusivity of the supercooled liquid itself. The desorption spectra of the probe gas are use…
Supercapacitors (SC) / Electro Chemical Double Layer Capacitor (EDLC) is yet to experience widespread use. Recently, advances have been made in improving both energy and power density. Due to their limited power and energy capabilities, they saw use in applications such as memory backups. New applications in the area…
Materials based on waste rubber from discarded tires and low-density polyethylene (PE-LD) have been studied. The blends were prepared via compounding of molten PE-LD with ground rubber (average particle size 0.4 mm) in an internal mixer. The products behaved like thermoplastic elastomers. To improve mechanical propert…
Dependences of the parameters of interdiffusion (effective coefficients, diffusion paths, Kirkendall shift) on the variation of the initial compositions of a diffusion couple have been studied on the concrete example of the Co-Fe-Ni system. The experimental results obtained show that the diffusion paths in the three-c…
Structural Evolution of Sputtered Indium Oxide Thin Films The indium oxide thin films were deposited at room temperature by reactive magnetron sputtering in the mixture of oxygen and argon on silicon and oxidized silicon substrates. The influence of the oxygen flow in the reactive mixture and post-deposition annealing…
The hydrophobic fumed silica suspensions physically pre-adsorbed poly(N-isopropylacrylamide) (PNIPAM) in water could prepare oil dispersed in water (O/W) Pickering emulsion by mixing of silicone oil. The resulting Pickering emulsions were characterized by the measurements of volume factions of emulsified silicone oil,…
GIS are widely used in the electric power industry as a key element for controlling bulk power from MV to UHV range. SF6and SF6/N2mixture HV GIS have proved themselves in several thousands of installations worldwide because of their many outstanding advantages.
Monoclinic MnSb(2)S(4) consists of MnS(4) chains made up of edge-sharing MnS(6) octahedra and adopts a (0, 0.369, 0) magnetic superstructure below 25 K. This ordered magnetic structure, in which the spins of each MnS(4) chain possess a helical spin arrangement, has C(2)' symmetry. On the basis of density functional th…
Biological systems exhibit many advanced sensory and healing traits that can be applied to the design of modern material systems. The foremost goal for the development of future adaptive structures is to provide materials capable of autonomously adapting in order to impede damage progression and, subsequently, heal th…