Materials Literature
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ABSTRACT Carbon fibers derived from biomass such as lignin have received increasing attention due to the sustainability of the precursor. In this study, partially acetylated softwood Kraft lignin (Ace‐SKL) was investigated for the purpose of dry‐spinning into carbon fiber precursors. The viscosity of solutions prepare…
-mode and an electromagnetic field of background radiation at the apex of a near-field probe based on an optical plasmon microstrip line (microstrip probe) has been proposed. The condition of the occurrence of electromagnetic energy reverse flux at the apex of the microstrip probe was obtained. It has been shown that…
New advances in nanotechnology and material processing is creating opportunities for the design and fabrication of a new generation of thin film sensors that can used to assess structural health. In particular, thin film sensors attached to large areas of the structure surface has the potential to provide spatially ri…
A needle-to-cylinder electrode configuration was proposed to generate an ionic wind at atmospheric pressure. Experiments were conducted with negative voltage ranging from 0 to −20 000 V at atmospheric pressure and room temperature. Negative corona, glow, and arc discharges in ambient air were achieved without external…
This chapter aims to provide the reader with practical knowledge about electrical methods of measuring organic thin-film transistor (OTFT) devices. It presents a series of recipes that allow the experimentalist to gain insight into the performance and limitations of the devices and circuits being measured. It also giv…
Understanding the charge trapping nature of nano-crystalline oxide semiconductor thin film transistors (TFTs) is one of the most important requirements for their successful application. In our investigation, we employed a fast-pulsed I-V technique for understanding the charge trapping phenomenon and for characterizing…
Over the past decade, a large body of research associated with the addition of microvascular networks to structural composites has been generated. The engineering goal is most often the extension of structural utility to include extended functionalities such as self-healing or improved thermal management and resilienc…
Although martensitic stainless steel materials are not used in large quantities compared to austenitic and ferritic grades, they play a huge and often unseen part in our modern world due to their combination of strength, toughness and moderate corrosion resistance. However, after welding the martensitic stainless stee…
Polyurethane elastomer (EPU) and polyureaurethane (PUUR) products are used in many stages of the mining process, such as extraction, transport, processing and storage. In these stages wheels with tires from polyurethane elastomers are used. Tire materials, especially in suspended transport, are exposed to particularly…
Grain boundaries degrade the performance of solar cells based on polycrystalline materials; yet, device models rarely accurately account for all their effects or their spatially localized nature. Here, we use 3-D technology computer-aided design (TCAD) simulations to determine the effect of grain boundaries on the per…
In the quest for barrier membranes for the prevention of post-surgical tissue adhesions, polymer matrices may provide a platform of biomaterials with versatile properties. However, the relationship between the anti-adhesion effects of different polymer matrices and their physicochemical and structural properties is no…
Reduction clearing using aqueous sodium dithionite under alkaline conditions at elevated temperatures is commonly carried out as an aftertreatment to remove deposits of disperse dye and other impurity residues from the surface of dyed polyester. In this paper, the effect of conventional reduction clearing on the colou…
A density functional theory study has been employed to investigate the effect of next-nearest-neighbours aluminium (NNN Al) atom on the acid strength of Brönsted acid site in Y zeolite. Additionally, the distribution of NNN Al atom was also studied. The obtained results show that thermodynamically, the favourable site…
This paper presents a nanomechanical test-analysis method to measure the elastic modulus and hardness of constituent phases of bituminous paving mixtures. Quasi-static nanoindentation tests were conducted on small-volume specimens using a Berkovich nanoindenter tip. The elastic modulus and hardness were analyzed from…
The crystallization kinetics and dielectric properties of a low‐dielectric, low‐temperature, cofirable ceramic system comprised of CaO–Al 2 O 3 –SiO 2 ( CAS ) glass and alumina have been investigated. Crystalline phases including pseudowollastonite (CaSiO 3 ), anorthite (CaAl 2 Si 2 O 8 ) and cristobalite (SiO 2 ) are…
Abstract Computer simulations were performed to increase the quantum efficiency of LED by optimizing the nanoheterostructure (NH). Furthermore, the InGaN and AlGaP NHs for LEDs were optimized. On the basis of the optimum NH, ways to further increase the efficiency and the influence of impurities and indium atoms doped…
This paper compares the designs of an induction and a synchronous reluctance machine-based actuator for use in an elevated-temperature environment application and compares their dynamic and loss performances: The dynamic requirements of the application must be met, while the low permissible overtemperature of the wind…
Plasma technology used to perform thermochemical treatments is well established for the majority of steels, but it is not the case for the different stainless steel classes. Thus, important scientific and technological achievements can be expected in the coming years regarding plasma-assisted thermochemical treatment…
A major goal of protein folding studies is to understand the structural basis of the coupling between stabilizing interactions, which leads to cooperative conformational change. The goal is challenging because of the difficulty in simultaneously measuring global cooperativity by determining population distributions of…
Based on a theoretical perspective, the primary function of insulation oils is to dissipate heat, and it serves as an insulator in between turn-to-turn windings in power transformers. To date, the majority of power transformer failures is attributed to the physicochemical reaction that takes place in the insulation oi…