Materials Literature
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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…
The therapeutic efficiency of anticancer nucleoside analogues (NA) strongly depends on their intracellular accumulation and conversion into 5'-triphosphates. Because active NATP cannot be directly administrated due to instability, we present here a strategy of nanoencapsulation of these active drugs for efficient deli…
Single-walled carbon nanotubes (SWNTs) were chemically functionalized with amphiphilic octadecylamine after purification. Lower density and highly oriented SWNTs were obtained via Langmuir–Blodgett (LB) technique. A model was introduced to explain the compression-induced alignment. The phase behavior of the spreading…
We report the preparation and detailed structural and optical characterizations of single phase gallium doped ZnO nanopowders. A low temperature solution-based technique was developed to synthesize high-purity Zn1−xGaxO (x:0–0.05) nanopowders. Structural and optical characterization experiments were performed using x-…
In this paper we report the modified solid state synthesis of Dy and Ce activated Sr6BP5O20, Ca6BP5O20 and (CaXSr(1?X))6BP5O20 phosphors. The prepared phosphors were characterized by the x-ray powder diffraction and photoluminescence techniques. The PL excitation spectra showed the excitation peaks ranging from 300 to…
Two coumarin-based spiropyran derivatives were synthesized and characterized in two steps to explore their photochromic properties. Both prepared compounds are sensitive to UV light and change colors upon irradiation. The resulting photogenerated zwitterions revert to the original compounds while being heated. A new f…
The finite-temperature density-functional theory and quasiharmonic lattice dynamics are used to calculate the Gibbs free energy and quasiharmonic phonons of the hexagonal-close-packed (hcp) and omega $(\ensuremath{\omega})$ crystal structures for Zr. The hcp phonon dispersions agree with experiment; the $\ensuremath{\…