Materials Literature
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Thermal conductivity and interfacial thermal conductance play crucial roles in the design of engineering systems where temperature and thermal stress are of concerns. To date, a variety of measurement techniques are available for both bulk and thin film solid-state materials with a broad temperature range. For thermal…
Metasurfaces are planar optical elements that hold promise for overcoming the limitations of refractive and conventional diffractive optics. Original dielectric metasurfaces are limited to transparency windows at infrared wavelengths because of significant optical absorption and loss at visible wavelengths. Thus, it i…
Biologically formed nanoparticles of the strongly magnetic mineral, magnetite, were first detected in the human brain over 20 y ago [Kirschvink JL, Kobayashi-Kirschvink A, Woodford BJ (1992) Proc Natl Acad Sci USA 89(16):7683-7687]. Magnetite can have potentially large impacts on the brain due to its unique combinatio…
The 2D transition metal carbides or nitrides, or MXenes, are emerging as a group of materials showing great promise in lithium ion batteries and supercapacitors. Until now, characterization and properties of single-layer MXenes have been scarcely reported. Here, using scanning transmission electron microscopy, we dete…
<p>Alloys of cobalt samarium (Co-Sm) in the form of thin films were fabricated using dc magnetron sputtering technique. The films were fabricated as a function of samarium concentration ranging from 0 to 28 at.% in order to investigate the relationship between microstructure, coercivity and magnetic domain struc…
<p class="TTPAbstract">In this study, we have investigated the LSPR spectra of the silver nanoparticles (Ag-NPs) coated by polyvinyl alcohol (PVA) by means of a numerical study using Bohren-Huffman-Mie (BHMie) approximation. The LSPR of Ag-NPs shifted to red-shift as the diameter size of Ag-NPs and the thickness…
Pure Mg, Mg-5wt%Ca, and Mg-5wt%Ca-1wt%Zn alloys were cast, and their high-temperature oxidation behavior was investigated to determine the roles of Ca and Zn in oxidation. Ca and Zn additions refined the microstructure by formation of Mg2Ca and Ca2Mg6Zn3, respectively, at grain boundaries. Ca increased the oxidation r…
In order to better understand the thermomechanical behaviors of Ti 3 SiC 2 and Ti 2 AlC ceramics, sintered by spark plasma sintering process (SPS), ultrasonic pulse echography in “long bar mode” (US) and acoustic emission (AE) techniques are applied. High‐temperature investigations of the evolution of Young's modulus…
To better understanding the lubrication condition between a polyvinyl acetal (PVA) brush and cleaning surfaces, we measured the frictional force between the PVA roller brushes and the semiconductor wafers with various films immersed in chemicals. The frictional force showed different tendencies depending on the combin…
Abstract The crystalline (B 4 ) phase made of acute‐angle bent‐core molecules (1,7‐naphthalene derivatives), which exhibits an unusual, highly porous sponge‐like morphology, is presented. However, if grown in the presence of low‐weight mesogenic molecules, the same crystal forms nanotubes with a very high aspect ratio…
Nickel oxide nanoparticles synthesized at room temperature (RT NiO NPs) and 60°C temperature treated nickel oxide nanoparticles (RT60 NiO NPs) were synthesized by the co-precipitation methods. The antibacterial studies performed against set of (gram positive) S.aureus and (gram negative) E. coli bacterial strains show…
<p>Binderless activated carbon monoliths (BACMs) prepared from mixtured of pre-carbonized of fibers of oil palm empty fruit bunches (EFB) and green petroleum coke were used for preparing the carbon based supercapacitor cells. The symmetrical supercapacitor cells were fabricated by using two BACMs electrode prepa…
Purpose This study aims to synthesize polyethylene glycol (PEG)-rosin derivatives from rosin and PEG for the production of solid soldering fluxes. The PEG-rosin derivatives would be water soluble, and the resulting solid soldering fluxes would have reasonable wetting ability when combined with a low-halide-content act…
Silicon-doped (Si-doped) diamond films were deposited on a Co-cemented tungsten carbide (WC-Co) substrate using the hot filament chemical vapor deposition (HFCVD) method with a mixture of acetone, tetraethoxysilane (TEOS), and hydrogen as the recant source. The as-deposited doped diamond films were characterized with…
Variation of two out of the six meso ‐aryl groups in Siamese‐twin porphyrin, an expanded porphyrin incorporating two pyrazole moieties, identified a set of substituents that result in optimized preparation of highly crystalline products. Electron‐donating and electron‐withdrawing aryl substituents have only negligible…
The phase structure and dynamic mechanical properties of poly(acrylonitrile-co-methyl acrylate) (P(AN-co-MA)) nanofibers collected in the form of twisted yarn via the two-nozzle conjugated electrospinning method were investigated to study the effects of solution concentration and take-up velocity on the relaxation beh…
Multiphase nanocomposites based on epoxy resin loaded with 1 wt% of multiwalled carbon nanotubes (MWCNTs) and different amounts of hydrotalcite clay (HT) are experimentally characterized in order to investigate their possible usage as temperature sensors and/or heating elements. In particular, the effects of clay cont…
A numerical simulation of the droplet distribution at the exhaust duct for a static mixer and injection location was performed for marine selective catalyst reduction. Through experiments with this auxiliary marine urea-selective catalyst reduction system, the ammonia slip, selective catalyst reduction system pressure…
In this study the effects of Bis(3-Sulfo-Propyl)di-Sulfide (SPS) on the elongation, surface morphology and crystal structure of electrolytic copper foil were investigated. Additives HEC (hydroxyethyl cellulose) (A), SPS(B), Coll-A(C) were used in the study, and the additive used as D was a Cl-ion. The study results sh…
Purpose The main aim of this study was to examine the effects of chicken eggshell (CES) and rice husk ash (RHA) as fillers on the mechanical and the thermal insulation properties of polyurethane coatings. Design/methodology/approach CES and RHA were ground via ball milling set at different parameters, and the smallest…