Materials Literature
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The pyrolysis and combustion characteristics and reaction kinetics of epoxy resin matrix and carbon fiber/epoxy composites based on epoxy resin were studied by cone calorimetry and thermogravimetry. The results show that with the increase in thermal radiation intensity (increase from 25 kW m−2 to 55 kW m−2), the avera…
This paper presents a next generation multi-objective co-optimization approach that enables the joint utilization of machine and human intelligence to address the growing challenges in all stages of technology enablement. This approach is utilized in exploring optimal combinations of a rich set of design, technology a…
Abstract Selective laser melting technology is used to manufacture porous and solid AZ91D alloys. The effects of laser power and hatch spacing on the density, blowholes, microstructure and mechanical properties of AZ91D alloy are studied. The laser power and hatch spacing play a significant role in the density and blo…
Abstract Joining is a crucial process for the production of complex-shaped advanced engineering materials. Deep understanding of ceramic-metal interfaces during joining or following heat-treatment steps is therefore of important concern in designing the new systems. Capacitor discharge joining (CDJ) method was firstly…
Space charge in DC cables affect the long-term reliability of the cable during operation. A temperature gradient (TG) develops across the cable insulation due to Joule heat in the conductor. Extensive researches on space charge in film insulations under TG have been reported. However, up to date, it is still questiona…
The lead-free dielectric compound Bi(Mg 2/3 Ta 1/3 )O 3 (BMT) has been synthesized at high temperature by a low-cost solid-state method. The X-ray diffraction (XRD) technique reveals that the fabricated sample has an orthorhombic crystal system. The scanning electron microscope (SEM) image displays the uniform distrib…
Abstract A number of regularities of phase and structural transitions in an economically iron and nickel doped aluminum alloy with eutectic-forming elements (nikalin) at high shear strains under pressure have been determined in this work. The structural evolution of nikalin, in particular, the change in the morphology…
In search for solution to the challenges posed by the degradation of roofing steel sheet in an aggressive environment, galvanization of steel sheet for roofing of buildings and manufacture of other Engineering structures has been a valuable remedy. Galvanization of steel in recent years has emerged as a physical barri…
Purpose Dynamic glucose‐enhanced (DGE)‐MRI based on chemical exchange‐sensitive MRI, that is, glucoCEST and gluco‐chemical exchange‐sensitive spin‐lock (glucoCESL), is intrinsically prone to motion‐induced artifacts because the final DGE contrast relies on the difference of images, which were acquired with a time gap…
Three indigenous systems—the underwater arc discharge setup, the inert environment arc discharge system, and the chemical vapor deposition (CVD) system—for the gram-scale production of carbon nanotubes were designed and fabricated. In this study, a detailed description of the development and fabrication of these syste…
Abstract The oxohydroxoferrates(III) A 2 [Fe 2 O 3 (OH) 2 ] ( A =K, Rb, Cs) were synthesized under hydroflux conditions. Approximately equimolar mixtures of the alkali metal hydroxides and water were reacted with Fe(NO 3 ) 3 ⋅ 9H 2 O at about 200 °C. The product formation depends on the hydroxide concentration, theref…
The discovery of highly conductive polyacetylene by MacDiarmid, Heeger, and Shirakawa in 1977 demolished our perception of polymers as the perfect example of insulators, and the Nobel Prize in Chemistry 2000 was awarded to these three pioneers. Despite the inferior charge carrier mobility and conductivity (compared to…
Understanding structural properties of materials and how they relate to its atomic structure, while extremely challenging, is a key scientific quest that has dominated the landscape of materials research for decades. Neutron and X-ray scattering is a state-of-the-art method to investigate material structure on the ato…
Abstract Mg-doped ZnO nanoparticles with different contents of Mg dopant have been synthesized by tartaric acid complex method with subsequent calcination at 600°C for 2 h. The products have been characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (…
Abstract A function for the analysis of the non-exponential kinetics of photoluminescence decay of colloidal quantum dots at room temperature is presented. The function takes into account trapping and detrapping of photogenerated charge carriers with physically meaningful parameters (time constant, trapping and detrap…
An encapsulant system was prepared via crosslinking of chitosan using citric acid as a crosslinker. FTIR spectroscopy, particle size and zeta potential analyses confirmed successful crosslinking, appropriate particle size and colloidal stability. Encapsulation capability of the said material was investigated using flu…
In this work, the thermal pyrolysis process and produced chemical defects of crystalline polyethylene, taking the effects of oxygen into account, are explored by molecular dynamics simulation based on ReaxFF force field. The trap energies and sites of various types of chemical defects are calculated by density functio…
The role of interfacial defect chemistry in time dependent breakdown and associated charge transport mechanisms was investigated for Pb0.99(Zr0.52Ti0.48)0.98Nb0.02O3 (PNZT) films. Electrical degradation was strongly dependent on the sign of the electric field; a significant increase in the median time to failure from…
Nano-composite film possesses antibacterial properties of nanomaterials and preservation performance of food packaging film. The goal of this work was to explore the potential application of nano-silver-containing polyvinyl alcohol (PVA) composite film in grape fresh-keeping. Mechanical properties, transparency, barri…
Abstract Density functional theory (DFT) method used to investigate the interaction of thioguanine isomers with B 12 N 12 nanocage in several media to earn electronics properties. To achieve this purpose, adsorption of thioguanine isomers on the exterior surface of B 12 N 12 investigated in the gas phase and water med…