Materials Literature
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Vitrification of nuclear wastes is attractive because of its flexibility, the large number of elements which can be incorporated in the glass, its high corrosion durability and the reduced volume of the resulting waste form. Vitrification is a mature technology and has been used for high level nuclear waste (HLW) immo…
This review covers main approaches to development of inhibited conversion formulations for chemical oxidation of aluminum alloys. A mechanism explaining the formation of conversion coatings on aluminum alloys from chromate conversion baths is proposed; the protective properties of the resulting coatings are characteri…
The electronic structure of contact between Ti surface and a semiconducting carbon nanotube is investigated by using first-principles method. The nanotube placed on the Ti surface exhibits obvious cross section distortion and strong chemical bonds form between C and Ti. Our results suggest that the nanotube may become…
Abstract Low‐pressure plasmas are known for their ability to synthesize nanoparticles via gas‐phase nucleation. While in the past this particle formation has often been considered from the viewpoint of a contamination problem in semiconductor processing, we here describe a low‐pressure plasma that enables the synthesi…
It is established that magnesium oxide (a nonmagnetic ionic insulator) exhibits a transition to the state of a magnetic half-metal upon the introduction of nonmagnetic impurities (boron, carbon, or nitrogen) into the crystal lattice. The possibility of obtaining novel magnetic materials for spintronics by doping ionic…
Using Stokesian dynamics simulations, the shear-induced diffusivities due to pair collisions of identical spherical or nonspherical particles are considered, with the purpose to evaluate the effects of irreversibility and symmetry breaking. Results are compared to an approximate upper bound found by assuming that the…
Fluorosilane self-assembled monolayers for polydimethylsiloxane (PDMS) nanochannels are desirable to control the hydrophobicity of the surface to reduce or prevent undesired protein adsorption or cell interactions, critical for the performance of many biomedical micro-/nanodevices. Surface modifications using vapor ph…
Abstract Pulsed-laser irradiation induced the release of plasmid DNA from conjugates of DNA and gold nanorods (GNRs). Gel electrophoresis indicated that 1% of the plasmid DNA conjugated with GNRs was released from the conjugates. In vitro assay indicated that 0.5% of plasmid DNA was active.
The effects of Co, Fe, Mn, and Ti oxide additions on the sinterability and crystal-chemical, thermal, and electrical properties of Ce 0.8 Gd 0.2 O 2−δ have been studied. The results indicate that these oxides enhance the sinterability of the mixed oxide, regardless of whether they were introduced before or after synth…
Abstract One of the outstanding problems in understanding near-neutral pH stress corrosion cracking (NNpHSCC) in pipelines is the determination of the factors that cause a very small number of the ...
We study the phase transition from amorphous to face-centered-cubic (fcc) polycrystalline Ge2Sb2Te5 thin films. The transformation has the peculiar characteristic, still not well understood, of coexisting high transition rates at low annealing temperature (with grain growth velocities of the order of 1nm∕min at 140°C)…
The microstructure and optical properties of MgO–TiO2 composite thin films prepared by radio frequency magnetron sputtering were studied. The composite films have an amorphous structure and the growth rate of the composite film increases with increasing Mg content. The refractive index almost linearly decreases with i…
The article discusses the investigation of the optical properties of newly synthesized CdTe nanocrystal quantum dots (NQDs) capped with oleic acid/trioctylphosphine surfactants and grown in the presence of in situ formed Cd 0 nanoparticles, precipitated prior to the formation of the CdTe NQDs. These CdTe NQDs exhibit…
Ultrathin ruthenium films are promising capping layers protecting extreme ultraviolet lithography optics against carbon growth and oxidation. The structure and reactivity of 2, 5, and 7 nm thick nanocrystalline Ru films on Si (serving as a model system for Ru capping layers) were studied by multiple techniques includi…
A novel pencil-beam, full-space scanning 2D composite right/left-handed (CRLH) transmission line (TL) leaky-wave antenna (LWA) array is proposed. The proposed array achieves the same performance of conventional phase array antennas in a simpler manner. Moreover, array elements are fed by a CRLH infinite-wavelength ser…
This letter presents the influence of ferromagnetic nanowires on permittivity and losses on a so-filled membrane. For this purpose a theoretical permittivity model has been developed by considering geometrical parameters of the substrate such as the porosity of the membrane and the height of the nanowires. It has been…
We show that a semi-infinite magnetoelectric (ME) material adjoining a vacuum sustains the propagation of a shear horizontal wave accompanied by electromagnetic waves. The ME material is assumed to possess hexagonal (6 mm) symmetry. The expression for the phase velocity of this wave is obtained explicitly. The result…
Deformation behavior of Zr-Nb alloys under uniaxial compression, accompanied by phase transformations, is considered by the example of Zr-1%Nb and Zr-2.5%Nb alloys. Model samples were deformed at temperatures of β- and (α+β)-regions of the phase diagram Zr-Nb. Mechanisms, responsible for plastic deformation of alloys…
The phase composition and structure of a mixture of aluminum and quartz powders taken in a ratio of 1:1 have been studied after loading by spherical converging shock waves. A number of concentric layers (zones) have been observed in a meridian section of the sample after shock-wave loading. The pressures in the conver…
With a view to improving the catalytic performance of supported bimetallic platinum-copper catalysts in hydrogen-assisted dechlorination of halogenated alkanes, a range of catalysts were prepared by reduction of oxide precursors by the hydride anion H − , using both sodium and calcium hydrides (NaH and CaH 2 ). The ca…