Materials Literature
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Fermi dirac integral is applied to study the parabolic band structure of Carbon Nanotube (CNT) which is in the range of minimum band energy. In this letter electronic transport property of one dimensional carbon nanotube with parabolic band structures near the charge neutrality point is investigated. The temperature d…
SiO 2 pillar arrays with high aspect ratios were fabricated by nanoimprinting using ordered anodic porous alumina as a mold. The size and shape of SiO 2 pillars could be controlled by changing the geometrical structures of the anodic porous alumina mold. The used of the obtained SiO 2 fine patterns composed of ordered…
The capability of the generalized interpolation material point (GIMP) method in simulation of penetration events is investigated. A series of experiments was performed wherein a shaped charge jet penetrates into a stack of aluminum plates. Electronic switches were used to measure the penetration time history. Flash x-…
The crystal structure of cannizzarite, ideally Pb 48 Bi 56 (S 124 Se 8 ) 132 , a fumarole sublimate from the La Fossa crater, on the island of Vulcano, Italy, with a nominal composition Pb 47.9 Bi 55.8 (S 121.8 Se 10.5 ) ∑132.3 and unit-cell parameters a 38.86(3), b 4.090(3), c 39.83(3) A, β 102.30(3)°, Z = 1, has bee…
In this research, ambipolar behavior, which is one of graphene's unique characteristics, is studied for the epitaxial graphene formed on 3C-SiC grown on a Si substrate. The graphene channel is believed to be unintentionally p-type-doped at Dirac-point voltages of approximately +0.11 to +0.12 V. However, as drain volta…
Using density functional theory ab initio calculations, we study magnetic moments and ordering temperatures of Mn-doped 3C and 4H polytypes of silicon carbide (SiC) with the Mn impurities substituting at different lattice sites. For an improved accuracy of the Curie temperature (T(C)) and magnetic moment estimations,…
The performance of thermoelectric device can be greatly improved by combining with thermosyphons heat transfer and energy recovering. A novel thermoelectric air-conditioner was developed for a track cab; it is compatible with movable spaces because of its special advantages, such as reliability, eco-friendship and sim…
It is crucial for proper insulation design of cast resin transformer to consider voids and delamination which might exist in cast molding because of several surface boundaries between resin and conductor. Such defects in the insulator lead to reduction of the life of the apparatus. In this report, we investigate the r…
Fully synthetic tetrasilisic mica from Topy Co., Ltd. and Cloisite®powder of Wyoming natural montmorillonite clay from Southern Clay Products were used to manufacture polypropylene-based nanocomposites with organoclay concentrations up to 8%-wt. Both types of nano-filler increase the AC breakdown strength by approx. 1…
Multiferroic BiFeO3 was fabricated via a high pressure of 5 GPa at 900 °C. The crystal structure of the BiFeO3 ceramic was determined by X-ray diffraction (XRD) to be a rhombohedral perovskite with a space group of R3c. The temperature dependence of XRDs was collected down to 5 K under ambient pressure that showed no…
Phase change memory (PCM) uses rapid heating and cooling to induce switching in sub-micron memory cells. The rapid rates of heating and nanoscale dimensions require accurate modeling of thermal transport phenomena in the constituent materials. This motivates improved understanding of the thermal properties of Ge2Sb2Te…
The influences of the process gases, such as methane and nitrogen concentration on the morphology of nanocrystallites diamond films are assessed. It has been found that the concentration of CH4 in the reactant gases is important to control the morphology of diamond nanocrystallites. The morphology of nanocrystallites…
A superhydrophobic complex coating for cotton fabrics based on silica nanoparticles and new fluoroalkylsiloxane polymer was reported here. The complex thin film was prepared through sol-gel method using cotton fabrics as a substrate. Silica nanoparticles in the coating made the textile surface much rougher, and new fl…
In the present work we investigate the structural and magnetic properties of the pristine and thermally treated LuFe 2 O 4 compounds by using the X-ray diffraction, Mössbauer and magnetization measurements. The local structural parameters and ionic states of Fe are found to be very much sensitive to the moderate therm…
This study investigates the effect of Li content on the structural, optical, and electrical properties of sol-gel LiZnMgO films by x-ray diffraction, scanning electron microscopy, photoluminescence, and conductivity measurements. A dependence of crystallite size and conduction type upon Li content has been found. The…
Abstract The amphiphilic triblock copolymer of poly(ε-caprolactone)- b -poly(ethylene glycol)- b - poly(ε-caprolactone) (PCL–PEG–PCL) was prepared by ring opening polymerization of PEG and ε-caprolactone in the presence of stannous 2-ethyl hexanoate ( Sn ( Oct ) 2 ) as catalyst. The structure of triblock copolymer was…
Abstract Urea hydrolysis for production of ammonia, in different application areas require safe use of ammonia, for removal of the NO x contaminates contained in a flue gas stream and increase in the efficiency of an electrostatic precipitator for the removal of fly ash from the flue gas stream. The single and combine…
Two series of cobalt substituted Ni–Fe–Ga ferromagnetic shape memory alloys with lower gallium content (<27 at. %) were studied by differential scanning calorimetry, x-ray diffraction, and thermomagnetic measurements. Co substitution for Fe or Ni promotes an increase in the Curie temperatures and a variation in…
Multifunctional polymeric vesicles were developed for targeted drug delivery and imaging. To fabricate this system, a biodegradable amphiphilic diblock copolymer, folate-poly(ethylene glycol)-poly(D,L-lactide) was designed and synthesized through sequential anionic polymerization in a well-controlled manner. Hydrophob…
For every mill the ideal roll can be considered as one that can be used in a mill stand indefinitely. Unfortunately for the roll user, such ideal rolls do not exist. One major reason for work roll changes (planned or unplanned) is “wear”. In the context of cold rolling and temper rolling, “wear” primarily refers to lo…