Materials Literature
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Annealing of 3D architectures is one of the major challenges for current and next generation devices for various applications ranging from sensors, microprocessors or high density memories. One of the most promising solutions is Laser Thermal Annealing (LTA), an ultrafast and low thermal budget process already adopted…
Polyaniline (PANI) was electrochemically deposited onto aligned carbon nanotube (CNT) arrays during 500 and 2500 sec. The electronic state of nitrogen in the composites was investigated by near-edge X-ray absorption fine structure spectroscopy. The N K-edge spectra revealed that mainly emeraldine base was developed in…
This digest paper presents our initial explorations of engineering graphene 2D nanostructures into nanomechanical resonators and transducers vibrating at high frequencies (i.e., ~1-30MHz, in the HF band in radio frequency spectrum) at T ~300K. We explore very small graphene devices that are suspended over micrometer-s…
Polypropylene/Polyamide 6 (PP/PA6) blends-TiO2 nanocomposites have been prepared via melt blending PP/PA6 with TiO2 nanoparticles, which were pretreated with toluene-2,4-di-isocyanate. The functionalized-TiO2 can react with the terminal amino and carboxyl groups at PA6, interfacial interaction and compatibility betwee…
Using Vanderbilt-type plane-wave ultrasoft pseudopotentials within the generalized gradient approximation (GGA) in the frame of density functional theory (DFT), we have investigated the crystal structures, elastic, and thermodynamic properties for Ti 2 SC under high temperature and high pressure. The calculated pressu…
In this paper, we analyzed the frequency spectrum of the electromagnetic waves radiated by an electric discharge as a basic study to develop an on-line diagnostic technique for power equipment installed inside closed-switchboards. In order to simulate local and series arc discharges caused by an electric field concent…
The structure of lead zirconate titanate Pb(Zr x Ti1 − x )O3 thin films grown by chemical solution deposition on Si-SiO2-Ti-Pt substrates has been studied using transmission electron microscopy and energy-dispersive analysis. Films crystallization has been performed using laser annealing. It has been found that, in co…
Abstract In this paper a universal mathematical model using fully coupled thermal‐structural finite element analysis capable of predicting ductile‐to‐brittle failure mode transition at high strain rates is presented. Appropriate equivalent strain measures describing the onset and the growth of ductile and total damage…
The synthesis of methanol and dimethyl ether (DME) from CO hydrogenation has been investigated on Cu-based catalysts. A series of Cu/ZnO/Al 2 O 3 catalysts were prepared using a solvent-free routine which involved a direct blend of copper/zinc/aluminum salts and citric acid, followed by calcination at 450 °C. The calc…
Abstract The development of corrosion-resistant alloys with sustained thermal and mechanical stabilities is the focus of current research on high-temperature alloys. It has been shown that the creep behavior and oxidation resistance of Co–Re alloys can be improved by small additions of, e.g., B and Zr. To understand t…
We have previously synthesized a caged form of the use-dependent N-methyl-D-aspartate (NMDA) receptor ion channel blocker MK801 and used intracellular photolysis of this compound to demonstrate the subcellular location of NMDA receptor ion channels involved in synaptic plasticity. Here, we discuss considerations regar…
Space charge can greatly influence the electrical properties of insulating dielectrics. Our understanding of space charge, and our ability to control its accumulation in dielectrics, progressed slowly for many years, until reliable methods of measuring space charge profiles were developed. Nowadays, the injection of a…
Quantum dots (QDs) have many potential clinical and biological applications because of their advantages over traditional fluorescent dyes. However, the genotoxicity potential of QDs still remains unclear. In this paper, a plasmid-based system was designed to explore the genotoxic mechanism of QDs by detecting changes…
The insect fauna of the native milkweed plant Calotropis procera (Ait.) Ait. in the Ibex Reserve, in the Central Region of the Kingdom of Saudi Arabia was studied. Insects were sampled bimonthly from May 2007 to late April 2008, and then irregularly until June 2011. Ninety-nine insect species belonging to eight orders…
We report the ferroelectric, dielectric and piezoelectric properties of a dense and crack-free lead zirconate titanate (Pb(Zr 0.52 Ti 0.48 )O 3 , PZT) thick film containing micro- and nano-crystalline particles. The results show that these electrical properties are dependent strongly on the annealing temperature and f…
We exploit the dependence of the electrical conductivity of graphene on a local electric field, which can be abruptly changed by charge carriers generated by ionizing radiation in an absorber material, to develop novel highperformance radiation sensors for detection of photons and other kinds of ionizing radiation. Th…
Thermal management in 3D packaging plays an important role in the device performance and reliability. The development of thermally conductive underfills is highly crucial, but still challenging. In this work, single/few-layer boron nitride (BN) was exfoliated from bulk h-BN flakes and was incorporated into epoxy resin…
There is a strong indication that the dual-cooled LiPb blanket is the preferred concept for many fusion power plants being designed around the world. The ability of the blanket to provide tritium self-sufficiency is among the important issues that we investigated in detail for ARIES-ACT to pinpoint the design elements…
Mn2+ ions doped ZnS semiconductor nanocrystals (ZnS:Mn NCs) were synthesized using colloidal chemical method at 70 degrees C without any capping agents. The as-prepared undoped ZnS and ZnS:Mn NCs were characterized by UV-Vis absorption spectra, fluorescent emission spectra, X-ray powder diffraction (XRD), inductively…
The Soret maxima of copper triarylcorroles are exquisitely sensitive to substitutions on the meso phenyl groups. Similar substituent effects are also known, in more muted form, for Mn and Fe corroles. In contrast, the Soret maxima Ag , CrO and MoO triarylcorroles are essentially invariant with respect to phenyl-group…