Materials Literature
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A mechanistic simulation of molten core-material relocation is required to reasonably assess consequences of postulated core disruptive accidents (CDAs) in fast reactors (FRs). The dynamics of molten core-material freezing when it is driven into the channels surrounding the core region plays an important role since th…
A study of the properties of a liquid crystal (LC) lens with a stacked structure of two LC layers is reported. The lens power is approximately twofold larger than that of the LC lens with a single LC layer. The lens exhibits a good ability for focusing incident light beam, and its RMS wavefront error remains small ove…
Annular fuel is very beneficial for fast reactors because of its availability for both high power and high burnup. Most of the annular pellets irradiated up to high burnup showed central-hole shrinkage due to deformation and restructuring during irradiation. This shrinkage has a great influence on power-to-melt, which…
Abstract In order to obtain optimum lightweight constructions in the automobile and aircraft industry, it is important to consider the use of extruded magnesium sections. A lot of the recent research has dealt with the extrusion of AZ31. These extrudates often miss the requirements of the automobile or aircraft indust…
We synthesized vertically aligned carbon nanotubes (CNTs) using multilayered catalyst thin films (Fe/Al 2 O 3 and Al 2 O 3 /Fe/Al 2 O 3 ) by RF (13.56 MHz) CH 4 /H 2 /Ar plasma-enhanced chemical vapor deposition. Pretreatment of the catalyst is crucial for CNT growth. In this paper, we analyzed the effect of catalyst…
Space charge formation in a nanocomposite thin film under dc stress at various temperatures was observed using the pulsed electro-acoustic (PEA) method. The LDPE/MgO nanocomposite materials, which is made of low-density polyethylene (LDPE) mixed with magnesium oxide (MgO) nano-size filler, has a higher resistivity und…
Nanoparticles of NiFe 2 O 4 have been synthesized by chemical co-precipitation method. X-ray diffraction pattern confirms the formation of single-phase cubic spinel structure and the lattice constant is 8.2 A. The energy band gap measurements of nanoparticles of Ni ferrite in pellet form have been carried out by refle…
Abstract The thermal stability of pure and doped zirconia fabricated by flame spray pyrolysis (FSP) is studied by calcination at various temperatures and residence times. Powders are analyzed by X‐ray diffraction (XRD), nitrogen adsorption (Brunauer‐Emmett‐Teller), energy‐dispersive X‐ray spectroscopy (EDX), and trans…
Measurements of ordinary refractive index, birefringence, density, and order parameter were made on a technologically important nematogen and the data obtained for its nematic and isotropic phase were reported. A modified wedge method was used for the measurement of the birefringence (n). The nematic-isotropic phase t…
Abstract Physically and dynamically vulcanized (TPV) mixtures of polypropylene (PP) and ethylene propylene diene terpolymer (EPDM) are prepared by extrusion in order to improve the impact resistance of PP. To enhance the chemical compatibility and provide better interaction between the PP and EPDM in the physical mixt…
Abstract The Güzelöz-İncesu Plateaus are situated in the central and eastern parts of the Cappadocian volcanic province (central Anatolia). This province contains many ignimbrite levels, andesite, basalt intercalated with several paleosols, calcrete, carbonate, fluvial sediments, diatomaceous clayey sediments and pyro…
The translational motion of carbon nanotubes (CNTs) dispersed in a nematic liquid crystal (NLC) has been observed in the fabricated CNT-doped homogeneously aligned NLC cells by applying in-plane electric field. The long axis of CNTs was aligned along the LC director in the initial state. However, the CNTs above a crit…
Abstract Agarose sols have been seen for long as solutions of flexible chains that, on cooling, produce thermoreversible gels through double‐helix formation. Investigations of the chain conformation in the sol state by small‐angle neutron scattering reveals instead a rigid chain with a very large persistence length (…
One of the biggest challenges when considering polymer nanocomposites for electrical insulation applications lies in determining their electrical properties accurately, which in turn depend on several factors, primary being dispersion of particles in the polymer matrix. With this background, this paper reports an expe…
Traditionally, electric generators, driven by an aircraft's main propulsion engines or by a gas turbine auxiliary power unit (APU), have supplied the electrical needs of commercial aircraft. In flight, the marginal efficiency of electric power generated by the main engines and their generators is at most 30-40%. While…
Abstract Segmented polyurethane ureas (SPUUs), which are being used in implant devices, were evaluated as drug delivery matrices using theophylline as a model drug without much sacrificing the mechanical properties of films after drug doping. SPUUs were synthesized from aliphatic diisocyanate (lysine methyl ester diis…
The nanostructure and photoluminescence of polycrystalline Er-doped Y2O3 thin films, deposited by radical-enhanced atomic layer deposition (ALD), were investigated in this study. The controlled distribution of erbium separated by layers of Y2O3, with erbium concentrations varied from 6to14at.%, was confirmed by elemen…
Abstract The nucleation and crystallization of two types of strongly segregated poly(lactide)‐ block ‐polyethylene diblock copolymers with an approximate 50/50 composition has been investigated. One material contains an amorphous PLDA block (PLDA‐ b ‐PE) and the other contains a semicrystalline PLLA block (PLLA‐ b ‐PE…
High-purity transparent conductive Al-doped ZnO (AZO) films were grown by KrF excimer pulsed laser deposition. We used ultraviolet and X-ray photoelectron spectroscopes to directly measure the absolute values of the vacuum work function of AZO films. The structure and electrical and optical properties of the as-grown…
This paper deals with an estimation manner of charge quantity of partial discharge (PD) in GIS by PD-induced electromagnetic (EM) wave measured with UHF method. Charge quantity of PD is important to understand PD activity or condition for insulation diagnosis, and the charge estimation by UHF method could contribute t…