Materials Literature
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High‐aspect‐ratio PbTiO 3 nanotube arrays have been synthesized by the hydrothermal method. X‐ray diffraction result shows that PbTiO 3 nanotube arrays have a tetragonal perovskite structure without any other impurity. The photoluminescence property of PbTiO 3 nanotube arrays studied at room temperature reveals a stro…
Photopolymerizable epoxy polyhedral oligomeric silsesquioxane monomers with variable aliphatic spacer have been prepared and cured under UV radiation. Due to their organic/inorganic composition, these materials are promising candidates for microelectronic applications which requires high thermal and mechanical stabili…
In this letter, a generalized circuit model valid for the description of composite right/left handed metamaterial transmission lines with an arbitrary number of bands is presented for the first time. The model is a T- or pi-circuit where the series branch is composed of parallel connected series resonators, and the sh…
This article discusses saturation properties of two-dimensional isotropic vector hysteresis models using geometrically vectorized stop and play hysterons. The vector stop and play hysterons are modified to obtain natural saturation properties. The modified hysterons improve rotational properties of vector stop and pla…
Abstract Summary: The carboxylate induced degradation of the poly[( R , S )‐3‐hydroxybutyrate] (PHB) has been investigated with non‐isothermal measurements. The apparent activation energies for PHB degradation have been determined. Application of the Kissinger's and Flynn‐Wall‐Ozawa's method for TG and DSC derived dat…
The distribution of chemical species in desert soils is a complex function of atmospheric inputs, rock weathering, chemical equilibria, soil leaching, and plant cycling. In this study of the surface 1 m of desert soils at the Nevada Test Site, we examined the distribution of soluble soil elements beneath plant canopie…
The progress made in the field of photonic metamaterials including their use in subwavelength imaging, super lenses, perfect lenses and cloaking, is presented. Using the coupled nanostructures with various dimensions, metamaterials that exhibited magnetic response at optical frequencies across the entire visible spect…
A layered compound of zinc-aluminium layered double hydroxide (LDH) to be used as a host for a guest amino acid, glutamate was synthesized. Different parameters were used and optimized to form amino acid-intercalated pure phase materials. The resulting Bio-Inorganic Nanohybrid (BINH) was chosen for further characteriz…
Recent discoveries of various forms of carbon nanostructure have stimulated research on their applications and hold promise for applications in medicine and other related engineering areas. Although carbon nanotubes (CNTs) are already being produced on a massive scale, few studies have been performed which test the po…
Fabrication of a Ti 2 AlN MAX phase for contact applications to GaN--based devices is reported. Sample characterisation was done by means of X-ray diffraction and secondary ion mass spectroscopy. Successful Ti 2 AlN monocrystalline growth was observed on GaN and Al 2 O 3 substrates by annealing sputter-deposited Ti, A…
Room-temperature powder electron paramagnetic resonance (EPR) spectra of drusy quartz (i.e., euhedral quartz crystals as coatings on or infillings in cavities and fractures) from five uranium mineralized areas in the eastern Athabasca basin, Saskatchewan, Canada, reveal a suite of radiation-induced defects. These EPR…
Partial discharge (PD) online monitoring of transformers by ultra-high-frequency (UHF) approaches has been paid increasingly attention recently. High-qualified UHF antennas are focused on as one key technique. This paper presents two types of compact UHF antennas in small sizes, a Hilbert fractal antenna and a small l…
Heusler alloys with nickel rich nominal composition Ni2+xMn1-xGa (x = 0.16 - 0.26) were prepared by arc-melting and subsequent homogenization by annealing. A large magnetic entropy change around room temperature was observed in the alloy where martensite-austenite structural and ferro-para magnetic transition temperat…
The dynamic yield strength and tensile (spall) strength of the D16T aluminum alloy are measured when samples are loaded by submicrosecond plane shock waves. The initial (unannealed) and annealed material is studied, and alloy samples subjected to multiple forging at elevated temperatures are also examined. The loading…
The effect of various nanocrystalline plasma-electrolytic carbonitriding of a commercially pure titanium in a glycerol bath with various additives, such as carbamide, sodium nitrate, and triethanolamine, was studied. Effects of the bath composition on chemical composition and corrosion resistance of the PEC/N films we…
Electromigration is a major source of wire and via failure. Refueling undoes EM for bidirectional wires and power/ground grids—some of a chip's most vulnerable wires. Refueling exploits EM's self-healing effect by balancing the amount of current flowing in both directions of a wire. It can significantly extend a wire'…
Surface coatings of pseudo‐binary Al 2 O 3 –Zr 2 O 3 (Y 2 O 3 ) eutectic oxides were produced by laser melting of the surface of conventionally sintered materials using a high‐power diode laser. It was possible to obtain smooth, homogeneous, and crack‐free coatings up to 50 × 7 mm 2 in area by carefully controlling th…
Due to the recent strategic initiative adopted by the Ohio Department of Transportation (ODOT) to reduce highway crashes, there is a current need to determine if surface friction testing results can be correlated to wet weather crash data in Ohio. The establishment of such correlations would allot ODOT to develop a pr…
Although optically active defects in nanodiamond are being considered ad candidates for optical labeling in biomedical applications, development in this area is being hindered the fact that suitable defects are rarely seen in diamond nanoparticles in the size regime required. These defects usually form as a complex wi…
This paper presents a mathematical homogenization technique able to handle fine periodic structures in presence of magnetic saturable/hysteretic media. The modeling approach, based on the multiple scale expansion theory, enables the evaluation both of equivalent electric parameters and effective magnetization curves (…