Materials Literature
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Abstract This paper focuses on the effect of liner component Fe content on cladding corrosion, hydriding and Pellet-Cladding Interaction (PCI) resistance. A multitude of experimental techniques is used to evaluate the various properties. The PCI resistance is evaluated through mandrel testing of un-irradiated cladding…
Aligned ZnO nanorods on film, tetrapod nanowires and nanotubes have been selectively fabricated by a simple one-step route and characterized by x-ray diffractometry (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM) and photoluminescence (PL). PL spectra exhibit different intensity of the green…
TiNi films were deposited by co-sputtering TiNi and Ti targets. Results from differential scanning calorimetry and curvature measurement revealed martensitic transformation and shape memory effect upon heating and cooling. Two types of TiNi/Si micromirror structures with a Si mirror cap (40 µm thick) and TiNi/Si actua…
Accurate calculations of the phonon dispersion relations, phonon density of states, and phonon eigenvectors of the narrow single-wall carbon nanotubes in optimized geometry are carried out. The method applied is based on the force constants for graphene which reflect the long-range character of the dynamical matrix. F…
Pr3+-doped selenide glass optical fiber, which guarantees single-mode propagation of above at least 1310 nm, has been successfully fabricated using a Ge-Ga-Sb-Se glass system. Thermal properties such as glass transition temperature and viscosity of the glasses have been analyzed to find optimum conditions for fiber dr…
The glass-transition temperature, Tg, of isotactic PMMA thin films has been measured for four thicknesses by enhanced Raman spectroscopy and ellipsometry. This was made possible by inserting a silica spacer layer between the film and the substrate. The use of such a spacer drastically improves the sensitivity of Raman…
We prepared multiwall carbon nanotubes (MWCNTs) from the pyrolysis of ferrocene, and CN(x) nanotubes from a mixture of ferrocene and melamine. Under well chosen synthesis conditions, massive multiwall CN(x)/carbon nanotube intramolecular junctions were successfully fabricated. The individual nanotubes were used as con…
A full electromagnetic calculation is performed to investigate two-dimensional near-field imaging using a 'Pendry' lens. We demonstrate that in spite of a positive magnetic permeability satisfactory resolution is possible for a thin silver slab, or a multilayer structure, at certain optical frequencies. These analytic…
Chemometric tools were employed to analyze the in-situ dynamic X-ray absorption spectroscopy data to probe the state of Co-MCM-41 catalysts during reduction in pure hydrogen and under single-wall carbon nanotube synthesis reaction conditions. The use of the progressive correlation analysis established the sequence in…
The converse longitudinal piezoelectric responses of PbZr0.2Ti0.8O3∕SrTiO3∕Si heterostructures have been studied for continuous films and for islands patterned by focused ion beam milling (typical dimension is 1×1×1μm). The intrinsic piezoelectric response of the island with an immobile polydomain structure is modeled…
It has been found that films of polymethylmethacrylate (PMMA) show a substantial conductance after bombardment by Ar ions with energy of 250–1250eV. The appearance of the conductance is attributed to graphitization processes in the subsurface layer. As the energy of ions increases, the conductivity of PMMA is greatly…
High-quality large-area beta-MnO(2) nanowires can be easily synthesized using KNO(3) as the mineralizing agent in a process of mineralization from Mn(NO(3))(2) aqueous solution. The morphological evolution of the beta-MnO(2) nanowires and the influences of mineralizing agents and their concentrations on the morphology…
Abstract Summary: The effect of the composite plasma parameter P/F, where P is the plasma power and F is the monomer flow rate, on the chemical character of pulsed plasma deposited allyl alcohol films was investigated by ToF‐SSIMS. Information on the unsaturated character, the cross‐linked and/or branched character of…
Abstract The effect of aging on the fractional crystallization of the poly(ethylene oxide) (PEO) component in the PEO/poly(3‐hydroxybutyrate) (PHB) blend has been investigated. The partial miscibility of the PEO/PHB blends with high PEO molecular weight ( M v = 2.0 × 10 5 g/mol) was confirmed by differential scanning…
Two-dimensional resonance frequency mapping in the ultrasonic atomic force microscopy was applied to the investigation of the ferroelectric domain structure in lead zirconate titanate ceramics. This method can visualize the stiffness anisotropy due to the differently oriented domains. Moreover, the significant stiffne…
Abstract To determine the fracture properties of Zr-2.5Nb pressure tubes irradiated until the end of design life, cantilever beam, curved compact toughness, and transverse tensile samples were prepared from a typical pressure tube and irradiated in the high flux reactor OSIRIS at CEA, Saclay, France. Experiments were…
The macroscopic or average aggregate behavior of Kneller's exchange-spring mechanism is well established and widely examined; less is known about its microscopic details. In the present study, the microscopic nature of exchange spring was investigated using $\mathrm{TbFe}∕\mathrm{FeCo}$ multilayers and correlated with…
We have carried out a systematic study of N(2)O dissociation on a TiO(2) (110) surface by means of plane-wave pseudopotential density-functional theory calculations. We have made use of both static and dynamic calculations in order to elucidate N(2)O decomposition mechanisms. We find that dissociation is not favorable…
We demonstrate the use of gas phase electrophoresis to size classify CNTs grown in a continuous aerosol process. The separation process occurs at atmospheric pressure and involves electrostatic mobility separation which classifies fibres on the basis of equivalent projected surface area. This implies that one can, for…
Abstract Summary: XPS and NEXAFS spectroscopy results were used for chemical characterization of pulsed plasma deposited allyl alcohol films before and after exposure to ambient air. The influence of the composite plasma parameter, effective plasma power (P) to monomer flow rate (F) ratio on the spectroscopic results…