Materials Literature
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Manipulating and tailoring the electromagnetic wave properties, several impacts of Metamaterials Möbius Strips (MMS) envisage, such as decrease in the size and suppression of spurious resonance modes, thereby improving the overall performances; validated with the example of 10.24 GHz VCO, measured FOM @ 1MHz offset is…
This paper presents a refinement in the residual resistance formulation used in pollution flashover model. The proposed study focused on the residual resistance calculation of the AR or open model which used the expression of the insulator factor form. The proposed modification takes into account the non-uniformity of…
The energy transfer from the S 1 levels of p-phenylbenzoyltrifluoroacetone (PhBTA) and dyes to different Ln3+ ions is studied in nanoparticles (NPs) composed of complexes of this diketone with Ln3+ and 1,10-phenanthroline (phen) and doped with dye molecules. The quenching rate constants in the NPs consisting from comp…
In this study, an attempt to experimentally evaluate the interaction between the fillers and base material has been made. The main goal was to investigate the effect of particle dispersion and distribution on the dielectric response of nanocomposites. Two different synthesis techniques were used to produce boron nitri…
Reducing the particle size of hexagonal ferrites is known to increase their coercivity effectively. However, the size reduction also enhances the agglomeration that deteriorates the magnetic alignment of these particles. In this paper, hexagonal plate shape strontium ferrite particles with an average size of 700 nm us…
The removal of NOx and particulate emissions in light-duty diesel vehicles will require the use of aftertreatment methods like Diesel Particulate Filters (DPF) and Selective Catalytic Reduction (SCR) with urea and Lean NOx Trap (LNT) (Euro 6 and beyond). A new concept is the combination of LNT + SCR, which enables on-…
The main aim of studies on dynamic behaviour of construction materials at high strain rates is to determine the variation of mechanical properties (strength, plasticity) as a function of the strain rate and temperature. On the basis of results of dynamic tests on the properties of constructional materials the constitu…
Performance of three widely used concrete material models available in LS-DYNA is compared using experimental results of drop-weight impact on a reinforced concrete (RC) beam and high speed aircraft engine missile impact on an RC wall. An overview of these material models and typical concrete material behavior shown b…
Chalcogenide vitreous semiconductors of As-Se-S and As-Se-Te compositions are synthesized, with thin films produced by thermal evaporation in vacuum. X-ray phase analysis and Raman spectroscopy are used to confirm their amorphous state and examine their structural specific features. It is shown that the matrices of bo…
The Fukushima Daiichi accident occurred on March 11, 2011. A seismic event and tsunami induced an extended station blackout plus loss of the ultimate heat sink. Three units progressed into a core melt severe accident. The accident occurred in the emergency operation procedure (EOP) domain. However, this situation was…
MoS2 is a material of interest for two-dimensional (2D) field effect transistors (FETs) [1-3], however contact resistance (Rc) remains a key limiting factor. Here we present a systematic study of contact resistance to MoS2 using various metals with different deposition conditions, compared to detailed simulations. We…
Polyhydroxyalkanoates (PHAs) can be produced by microorganisms and are a biodegradable alternative to fossil-fuel based plastics. Currently, the focus is on reducing production costs by exploring alternative substrates for PHAs production, and on producing copolymers which are less brittle than monomers. Accordingly,…
Data on the effect of acid-base properties of the medium in the pH range 0–9 on the intensity of transformation of 2-furaldehyde and the direction of the multi-stage reactions in the 2-furaldehyde-H 2 O 2 -H 2 O system in the presence of VOSO 4 and without it are presented. Significant influence of the medium pH value…
Abstract We have developed our original photoalignment technology, IPS‐NEO, which improves azimuthal anchoring strength to a level equivalent to that of rubbing, and reduces photoirradiation energy to a level required for mass production. We have also clarified that the anchoring strength of IPS‐NEO does not depend on…
A novel numerical 3D-model for simulations of random networks of carbon nanotubes is presented. This new algorithm takes into account the real 3D nature of these networks, allowing a better understanding of their electrical properties. CNTs are modeled as stiff cylinder with geometrical properties derived accordingly…
Abstract Kaolinite- and halloysite-potassium acetate complexes were synthesized by cogrinding with solid potassium acetate (mechanochemical intercalation). The efficiency of mechanochemical intercalation was compared to the intercalation in solution and by homogenization. The effects of ageing and grinding parameters…
Abstract: RAVEN is a generic software driver to perform parametric and probabilistic analysis of code simulating complex systems. Initially developed to provide dynamic risk analysis capabilities to the RELAP-7 code, [1] RAVEN capabilities are currently being extended by adding Application Programming Interfaces (APIs…
HVDC transmission systems are being employed in many projects all over the world. In particular, the demand for long-distance HVDC power transmission lines is increasing to interconnect power grids between main land and island or wind farm grid connection. With such an increasing demand, it was required to develop new…
This work investigates the thermal performance of four novel CFC–Cu joining techniques. Two involve direct casting and brazing of Cu onto a chromium modified CFC surface, the other two pre-coat a brazing alloy with chromium using galvanisation and sputtering processes. The chromium carbide layer at the interface has b…
With the aim of reducing the insulation faults in GIS and achieving the purpose of GIS device miniaturization, it is very important to develop a new type insulation material. In this paper, the micro-nano Al2O3/Epoxy composites were proposed, and its dielectric breakdown strength was investigated. Nano-fillers and mic…