Materials Literature
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In this paper, the mer-Co(NH3)3(NO2)3 complex was used as a new precursor for synthesizing spinel-type cobalt oxide nanoparticles (Co3O4NPs).Thermal decomposition of the complex at low temperature (175 °C) resulted in the Co3O4NPs without using expensive and toxic solvents or complicated equipment. XRD, FT-IR, SEM, ED…
Space charge distributions in multilayered polyimide films under dc high stress was measured using pulsed electro acoustic (PEA) method. Judging from our previous research works, the space charge accumulated in a single layer polyimide film under dc high electric field is closely related to electrical breakdown. Howev…
In high voltage DC applications one of the most critical parameters of insulation materials is the conductivity. It is however challenging to measure conductivity accurately, since it is influenced by composition, morphology, sample thickness, temperature, electric field strength and electrode material. There is no st…
Partial discharge phenomena from different sources (corona, internal and surface discharges) were investigated under sinusoidal and cosine-rectangular waveforms having frequencies of both 0.1 Hz and 50 Hz. The results show that testing at very low frequencies can be affected by sensitivity issues (PD magnitudes are ab…
To improve the mechanical performance of flax polymer composites, different surface modifications on flax fibres have been investigated by many researchers. In this study, the effects of alkaline treatment on the properties of Chinese linen flax were evaluated by different chemical and mechanical test techniques. Chem…
Porous carbon nanofibers (PCNFs) are excellent one dimensional (1D) carbon materials that have fascinating applications in the fields of gas separation, catalyst support, sensors, energy storage and conversion devices, due to their highly developed pore structure and large surface area. Therefore, fabrication of PCNFs…
Microdomains and microdomain patterns have been recorded by applying dc voltages to the probe of an atomic force microscope contacting the nonpolar surface in a barium-strontium niobate ferroelectric crystal. Processes of the formation of microdomains have been investigated. It has been shown that the frontal growth o…
A process to achieve 12 nm half-pitch interconnect structures in ultralow-k interlayer dielectric (ILD) is realized using standard 193 nm lithography. An optimized pattern transfer that minimizes unwanted distortion of ILD features is followed by copper fill. Electrical measurements that validate functionality of the…
This article makes a brief review on high-gravity combustion synthesis as a novel technique to prepare bulk ceramic materials. This technique combines strong exothermic combustion reactions with a high-gravity field, and provides an efficient way for rapid production of ceramic materials. In high-gravity combustion sy…
Fe90−x Ni x Zr10 (x = 0, 5, 10, 15, 20 and 25) ribbons with various thicknesses were prepared by using a melt-spinning technique. The Curie temperature, T C , of the alloys dramatically decreased from ∼960 K to room temperature at high quenching rates. When the alloys had an amorphous structure, their T C strongly dep…
Nanostructural effects on the thermoelectric power of graphene nanoribbons (GNRs) are revealed through first-principles simulation based on the density functional theory combined with nonequilibrium Green's function theory. The thermoelectric power of GNRs exhibits essentially different behavior depending on their edg…
The evaluation of stability of secondary phases in superalloys is of great importance because of its application under high homologue temperatures. The precipitation hardening Inconel 718 superalloy has high stress rupture and creep resistance, good LCF behavior and high corrosion resistance. Those properties can be o…
A mathematical model that determines the propagation of acoustic waves of different geometry in two-fraction mixtures of liquids with polydispersed gas bubbles of various compositions is presented. A unique dispersion relationship, which takes into account the propagation of the plane, spherical, and cylindrical pertu…
Abstract The operating voltage of PS‐BPLCs could be reduced by using host nematic liquid crystals with extremely large ΔnXΔε One of the PS‐BPLCs showed 23V of Vmax and 800 of contrast ratio using IPS electrode with 10μm of spaces, which should be driven by normal driver if electrode design is optimized On the other ha…
ZnO flower-like multisheets were synthesized on Si (1 1 1) and corning glass substrates with Cu and Au-Cu alloy buffer layers via vapor phase transport (VPT) method. The structures and morphologies of the products were investigated using X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM).…
Abstract In this third part of a series about 30 different structures of AB2O6 compounds are reviewed in an extensive study. We compare the near range co-ordination of all ions and try to derive general rules which hold in such complex arrangements. We examine the validity of known rules of crystal chemistry in a larg…
The effects of AC and pulsed-DC (PDC) waveforms on electromigration failure distributions in Cu / low-k interconnects are examined. No failures are observed with a 1MHz pure AC stress, consistent with average current density controlled kinetics and complete recovery of damage during current reversal. Failure distribut…
A powder and field-aligned samples of the 3d-4f bimetallic polymeric chain [Dy(NO 3 )(DMSO) 2 Cu(opba)(DMSO) 2 , DMSO: Dimethyl-sulfoxide, opba: ortho-phenylenebis( oxalato)] built from alternating dysprosium(3+) and copper(2+) ions are magnetic investigated in detail. The magnetic alignment for the powder is successf…
Abstract We present a facile non-coaxial electrospinning technique to synthesize the porous α-Fe2O3 microtube and tube-in-tube. The possible formation mechanism of different tubular-structure α-Fe2O3 has been proposed. Among the experimental parameters, the heating rate during calcination is a key factor for realizing…
Industry- or regulatory-sponsored research activities on the resolution of Generic Safety Issue (GSI)-191 were reviewed, especially on the chemical effects. Potential chemical effects on the head loss across the debris-loaded sump strainer under a post-accident condition were experimentally evidenced by small-scale be…