Materials Literature
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The aim of this paper is to describe the effect of training methods on the accuracy of PCA-KNN partial discharge (PD) classification model. This model used principal component analysis (PCA) combined with k-nearest neighbor (KNN) model, so called, PCA-KNN PD classification model for PD pattern classification. PD pheno…
PEG (polyethylene glycol) have been widely used in the synthesis of nanomaterials due to its special structure and performance. In this paper, the role PEG played in the preparation of nanomaterials, such as dispersion and stabilization, structure-directing, modification and functionalization were summarized.
We report the synthesis of monodisperse calcium carbonate (CaCO3) (nano)particles having either a cubic or spherical structure by reacting calcium nitrate with either sodium carbonate or citric acid, respectively, in the presence of cetyltrimethylammonium bromide (CTAB) via the sonication method. For comparison, CaCO3…
The quest for power electronic converters to operate in a subsea pressurized environment that is completely filled with appropriate dielectric liquid brings about the need to study the insulation performance of liquid in the system while in operation. One of the critical regions for electrical insulation is the trench…
The data presented in this work aim to provide a comprehensive characterization of lipid-coated gold nanoparticles. We show that it is possible to envelop gold nanoparticles with a coating of lipids during the formation of the gold nanoparticles, that the gold in these lipid-coated gold nanoparticles is crystalline an…
Carbon coatings were deposited on Nextel™440 fibres using C 3 H 6 –Ar system by hot wall chemical vapour deposition (CVD) with a total pressure of 1·5 kPa. The morphology and structure of the coatings were characterised by SEM, XRD and Raman spectroscopy. As the deposition temperature increased from 1173 to 1373 K, th…
With gold nanoparticles (AuNPs) is possible to develop nanoscale devices that can interact with chemical and biological systems. The phenomenon explored in these nanosystems is called Localized Surface Plasmon Resonance (LSPR), which promotes electromagnetic wave oscillation electronics on these small metallic structu…
A fabrication strategy is proposed to enable precise coverage of as-grown carbon nanotube (CNT) mats atop vertically aligned silicon nanowire (VA-SiNW) bundles in order to realize a uniform bundle array of CNT-SiNW heterojunctions over a large sample area. No obvious electrical degradation of as-fabricated SiNWs is ob…
A series of linear low-density polyethylene (LLDPE) nanocomposites containing different types of nanofiller (TiO2, MWCNT, expanded graphite, and boehmite) were prepared by in situ polymerization using a tandem catalyst system composed of {TpMs}NiCl (1) and Cp2ZrCl2 (2), and analyzed by differential scanning calorimetr…
First principles calculations have been performed to study the mono-vacancy formation energies and electronic properties of M2AlC (M = V and Nb) compound. The results show that the M mono-vacancy has a maximum formation energy. While the C mono-vacancy has a minimum formation energy, which means that the C mono-vacanc…
The effect of the presence of Zn2+ ions on the adsorption of octadecylphosphonic acid (ODPA) on nanocrystalline ZnO films has been studied by means of Quartz Crystal Microbalance (QCM) technique and complementary ex-situ analysis of film properties. Phosphonic acid moiety has sufficient acidity, even in organic solven…
Semi-solid metal forming of aluminium alloys has demonstrated the capability to produce near net shaped high integrity components. Anodising of these components for aesthetic and/or improved corrosion resistance is specified by some designers or users of this technology. The corrosion behaviour of fully anodised and p…
The paper presents the puncture resistance of the material, that is under the influence of highly deformable projectile, depending on changes of material’s yield strength. The simulation has been conducted using mobile cellular automata (MCA) with authors’ own software. The simulation took into account the elasto-plas…
Abstract Mullite-type (Al1-xGax)4B2O9 compounds were synthesized using the glycerine method. The end members Al4B2O9 and Ga4B2O9 were produced at different temperatures. Starting from the Al4B2O9 composition the incorporation limit of Ga ranges between 60 and 70 mol-%, while starting from Ga4B2O9 the Al incorporation…
The influence of natural antioxidants incorporated to biodegradable materials has become a focus of attention in the current food packaging research and development. Chitosan is a functional natural polymer extensively used for tailoring systems or matrices for a different active compound delivery. This work was focus…
The dependence of C 1s core-level shift (CLS) of graphene on the number of layer ( NL ) is significant information to derive the coordination-resolved C 1s core-level energy ( E 1s ) of carbon allotropes. To observe the variation of CLS of graphene with NL, binding energy and work function of graphene with various NL…
The paper presents a pretreatment of the substrate material prior to the thermal spraying process. The ultrasonic finishing method allowed creation of a rolling topography comprising alternating projections and cavities, compressive stress, and increase of the number of defects on the surface. Optical profilometry and…
Systematic first principles calculations have been carried out to study the structural, electronic, elastic and mechanical properties of ScNi, ScPd and ScPt using FP-LAPW method within GGA. The ground state properties such as lattice constant, bulk modulus and first order pressure derivates of bulk modulus, were evalu…
Zinc oxide (ZnO) nanostructures were successfully grown by wet oxidation of zinc (Zn) foil in water at 90 °C for 2 to 8 h. The effect of etching the Zn foil before oxidation treatment on the morphology of ZnO nanostructures was investigated. Hemispherical structures of ZnO nanowires, nanorods and nanotubes were produc…
As functions of the paraelectric layer thickness, misfit strain and temperature, the electrocaloric properties of ferroelectric-paraelectric superlattices are investigated using a time-dependent Ginzburg-Landau thermodynamic model. Ferroelectric phase transition driven by the relative thickness of the superlattice is…