Materials Literature
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Consider a three dimensional system which looks like a cross connected pipe system, i.e., a small sample coupled to a finite number of leads. We investigate the current running through this system, in the linear response regime, when we adiabatically turn on an electrical bias between leads. The main technical tool is…
We performed a systematic investigation of the thermoelectric properties of TlMTe2, where M was Ga, In, or Tl, to elucidate the role of Tl in determining the properties, especially thermal conductivity (κ). TlGaTe2 and TlInTe2 exhibited predictable characteristics, i.e., semiconductorlike behaviors in the electrical p…
The kinetics of thermal desorption of two four-ring polycyclic aromatic hydrocarbons, fluoranthene, and pyrene from well-characterized laboratory-generated kerosene soot surface was studied over the temperature range 260-320 K in a low-pressure flow reactor combined with an electron-impact mass spectrometer. Two metho…
Novel liquid crystalline materials based on chiral calamitic 1,2,4‐ and 1,3,4‐oxadiazole derivatives were synthesized and their thermotropic mesomorphism investigated by polarizing optical microscopy and differential scanning calorimetry. The structures of their smectic phases were investigated by X‐ray diffraction. T…
Aluminum-doped ZnO (AZO) films were epitaxially grown on sapphire (0001) substrates using pulsed laser deposition. As-deposited AZO films had a low resistivity of 8.01×10−4 Ω cm. However, after annealing at 450 °C in air, the electrical resistivity of the AZO films increased to 1.97×10−1 Ω cm because of a decrease in…
First-principles calculations have been carried out to study the electronic properties of A2Ti2O7 (A=Sm, Gd, Er) pyrochlores. It was found that f electrons have negligible effect on the structural and energetic properties, but have significant effect on the electronic properties. Density of state analysis shows that A…
Onion-type multilamellar vesicles are made of concentric bilayers of organic surfactant and are mainly known for their potential applications in biotechnology. They can be used as microreactors for the spontaneous and controlled production of metal nanoparticles. This process does not require any thermal treatment and…
Abstract In pressurized water reactors, new operating conditions (higher burnup, new chemistry, etc.) can have an effect on the dimensional stability of the fuel assembly skeleton. Previous studies have shown that the fuel assembly growth is, among others parameters (free growth, creep), strongly driven by corrosion.…
Amorphous and polycrystalline indium tin oxide films have been prepared by electron-beam evaporation method. The amorphous films exhibit semiconductor behavior, while metallic conductivity is observed in the polycrystalline samples. The magnetoconductivities of the polycrystalline films are positive at low temperature…
A fully-customized phase change memory (PCM) model for circuit simulation has been developed and implemented in Verilog-A platform. A temperature sensing circuit is used to track the set and reset conditions of the PCM element. The current-voltage of PCM cell at the two different states and the change of states during…
We report the fabrication and the physical and optical characterizations of sulphide GaxGe25−xSb10S65(x=0,5) rib waveguides. High quality films fabricated on SiO2/Si wafer substrates were obtained using the sputtering magnetron rf deposition method. The slab waveguides obtained without annealing present propagation lo…
For the development of a "short-duration ac withstand voltage test", an insulation specification of substation equipment, there is a precise method of reliability evaluation using a Weibull distribution function. Regarding this method, there remains a subject of handling coexistence of multiple voltage levels. This pa…
The electrical strength of the surface of low-temperature melting machinable glass ceramic, prepared by using several different methods, is investigated before and after treatment with diluted hydrofluoric acid (HF). Using the surface potential decay method, the surface trap density and the energy of each sample are m…
A novel, custom built measurement setup for the temperature dependent characterization of thin films under ambient and controlled gas atmosphere in respect to their electro-mechanical performance is presented. The strain gauge factor of platinum thin films (thickness: 1 mum) is determined at temperatures ranging from…
2,2'-Bis(fluorodiphenylsilyl)azobenzenes bearing two methyl and butyl groups at the 4- and 4'-positions were synthesized, and their X-ray crystallographic analyses revealed that they have tetracoordinated and pentacoordinated silicon atoms, respectively. Although the two compounds showed almost the same spectra in sol…
Formation of 1/1 Yb–Cd type approximants has been verified in the Ag–In–RE (RE: rare earth metals) system for RE = Tm, Tb, Er, Dy, Gd, Pr, Ce, or Eu. The compositions of the 1/1 approximants determined by wavelength dispersive X-ray analysis (WDX), are in the range of 42–48 at. % Ag, 38–42 at. % In, and 14–15 at. % RE…
A self-assembly method is developed to fabricate single-wall carbon nanotube field-effect transistors (SWNT-FETs). The electrode surface and the area between electrodes are modified with nonpolar groups (−CH3) and polar groups (−NH3+). SWNTs are selectively placed in the area between the electrodes. We achieve stabili…
The adsorption kinetics of NO 2 on a single-walled carbon nanotube (SWNT) thin-film sensor was investigated. To avoid the influence of ambient air, the adsorption property of SWNTs was explored under high vacuum. By virtue of the suppression of the influence of residual gases and the cleanness of the SWNT surface in v…
Crystallization behavior of scalable phase change materials can be studied on nanoscale structures. In this paper, high density ordered phase change nanodot arrays were fabricated using the lift-off technique on a self-assembled diblock copolymer template, polystyrene-poly(methyl-methacrylate). The size of the nanodot…
Abstract Objective —To determine the incidence and type of alterations in heart rate (HR), peak systolic blood pressure (PSBP), and serum biochemical variables (serum total bilirubin, BUN, and creatinine concentrations) associated with IV administration of ionic-iodinated contrast (IIC), nonionic-iodinated contrast (N…