Materials Literature
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Single energy ion implantation of hexagonal boron nitride (h-BN) at various fluences and keV energies has shown that there is a change in the local symmetry of the crystal from hexagonal to the cubic (c-BN) symmetry. These conclusions have been primarily based on Raman scattering (RS) and Fourier transform infrared sp…
We present a polarization-dependent infrared reflectivity study of the spin-ladder compound ${\mathrm{Sr}}_{2.5}{\mathrm{Ca}}_{11.5}{\mathrm{Cu}}_{24}{\mathrm{O}}_{41}$ under pressure. The optical response is strongly anisotropic, with the highest reflectivity along the ladders/chains $(\mathbf{E}\ensuremath{\parallel…
Laser-ablated magnesium species were codeposited with SO2 in excess argon or neon on the substrate at 4 K. The reactions mainly produced Mg(η(2)-O2S), Mg(η(2)-O2S)2, Mg2(η(2)-O2S), OMg2(η(2)-SO), and Mg(η(2)-SO) complexes, which were identified by isotopic substitutions and density functional frequency calculations (B…
The effect of high-pressure and/or high-temperature on the glycation of a model protein (ubiquitin) was investigated by mass spectrometry. This paper reports the impact of high pressure (up to 1200 MPa) on the modification of a ubiquitin using ESI-MS measurements. The application of glucose labeled with stable isotope…
Caprolactam Schiff base epoxy (CSEp) has been synthesized and characterized by Fourier transform infrared and proton nuclear magnetic resonance ( 1 H NMR) spectroscopies. Titanium dioxide (TiO 2 ) has been functionalized with 3-aminopropyltriethoxysilane (F-TiO 2 ), and different weight percentages (1, 3, and 5 wt%) o…
AlTiCrN coating was prepared on the surface of YT14 tungsten carbide cutting tools by cathodic arc ion plating with Ti, Al and Cr as targets. The surface morphologies, interface energy spectrum, phase and elements' binding energy of the coatings were observed with SEM, EDS, XRD and XPS, respectively, and bonding stren…
Abstract This paper aims to investigate 232Th/233U fuel cycles in a VVER-1000 reactor through calculation by computer. The 3D core geometry of VVER-1000 system was designed using the Serpent Monte Carlo 1.1.19 Code. The Serpent Code using parallel programming interface (Message Passing Interface-MPI), was run on a wor…
ABSTRACT Aroma compound could be lost during food storage in polymer packaging by transfers through material. The aim of this study was to develop a method that allows evaluating wine aroma compounds permeation through active PET bottles. A semiquantitative method has been adapted to the system. Results showed a regul…
The solid solution system Nd2−xCexTi2O7 has been investigated. The solubility limit of Ce in Nd2−xCexTi2O7 was found to be 0·5–0·75 according to X-ray diffraction and X-ray photoelectron spectroscopy results. Ce substitution increases the b and c axes and the volume of the unit cell due to its larger ionic radius. Nd2…
Abstract This paper points out that the Bratu-like equation for the charged jet in electrospinning process (Yu-Qin Wan, Qian Guo & Ning Pan, International Journal of Nonlinear Sciences and Numerical Simulation, 5(1), pp. 5–8) requires much improvement.
Precession electron diffraction has solved a long-standing challenge in electron diffraction. Further progress promises a general technique for structure determination of difficult crystals.
A novel topological insulator with orthorhombic crystal structure is demonstrated. It is characterized by quasi one-dimensional, conducting atomic chains instead of the layered, two-dimensional sheets known from the established Bi2(Se,Te)3 system. The Sb-doped Bi2Se3 nanowires are grown in a TiO2-catalyzed process by…
The dependence of nanoscale crystal formation from a noble element fluid on the rate of hydrodynamic compression was explored using molecular dynamics. Results were obtained for pure krypton samples as well as ones containing a cubic- or spherical-shaped fcc copper nanocrystal inclusion for compression rates of 1, 10,…
Ru films were deposited from Ru(C7H11)(C7H9)–O2 and Ru(C7H11)2–O2 systems on SiO2 (native oxide)/(001)Si, HfSiON/SiON/(001)Si, and HfO2/SiON/(001)Si substrates by pulsed metal organic chemical vapor deposition. Ru deposition was hardly observed at 210 °C at the early stage of the deposition, i.e., incubation time, and…
We have observed how thermoelectric effects that result in asymmetric melting of silicon wires are suppressed for increasing electric current density (J). The experimental results are investigated using numerical modeling of the self-heating process, which elucidates the relative contributions of the asymmetric thermo…
The formation of space charge in oil/paper insulation system can lead to material degradation in the region of high electric field. Therefore, it is important to understand the factors that affect space charge formation in oil/paper insulation system. In this paper, the effect of oil aging on space charge dynamics in…
Nanoporous platinum membranes can be straightforwardly fabricated by forming a Pt coating inside the nanopores of anodic alumina membranes (AAO) using atomic layer deposition (ALD). However, the high-aspect-ratio of AAO makes Pt ALD very challenging. By tuning the process deposition temperature and precursor exposure…
Protein fibrillogenesis is a universal tool of nano-to-micro scale construction supporting different forms of biological function. Its exploitable potential in nanoscience and technology is substantial, but the direct observation of homogeneous fibre growth able to underpin a kinetic-based rationale for building custo…
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We study the thickness effect of YBa2Cu3O7−δ (YBCO) in YBCO/La0.7Sr0.3MnO3 (LSMO) bilayer films, fabricated on LaAlO3 (001) substrate using pulsed laser deposition technique. The thickness dependent transport behavior of YBCO layer in considered bilayer systems demonstrate a clear onset critical temperature at 60 K an…