Materials Literature
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We demonstrate that by decoupling the interlayer interactions, N-layer hexagonal graphene is decomposed into the N independent subsystems. Each subsystem, exactly described by a 2 × 2 matrix, is treated as a renormalized graphene with the renormalized site energy and intralayer interaction. The analytical form of the…
Abstract Catalytic activities for direct NO decomposition were investigated on C-type cubic Y2O3–ZrO2 and Y2O3–ZrO2–BaO prepared by coprecipitation. Introduction of excess oxide anions in the Y2O3 lattice was achieved by partial substitution of the Y3+ sites with Zr4+, and high NO decomposition activity was obtained f…
In this paper, the limiting oxygen index (LOI), Underwriters’ Laboratories-94 (UL-94) test, cone calorimeter test (CCT), and thermogravimetric analysis (TGA) were used to study the flame-retardant properties of polypropylene (PP) composites and the synergistic flame-retardant effects of zinc borate (ZB) and/or microen…
BACKGROUND: Particulate carriers are necessary to control the release of endostar and prolong its circulation in vivo. The purpose of this study was to identify a suitable carrier for the capsulation and delivery of endostar. METHODS: We prepared a series of poly (DL-lactide-co-glycolide) (PLGA) and poly (ethylene gly…
Self-assembled ZnO quantum dots (QDs) have been obtained on different substrates by using the atmospheric spray pyrolysis methodology under well-defined growth conditions. The evolution of size and density of ZnO QDs as a function of precursor concentration, growth temperature, spraying time and spraying rate has been…
Developments of smart grids and integration of renewable energy sources will increase the amount of switching operations of unloaded transformer systems. A random energization of an unloaded power transformer can cause inrush currents and related voltage disturbances. State of the art controller systems control these…
We have been developing a measurement technique for the amount of generated acoustic cavitation using broadband integrated voltage (BIV), calculated from high-frequency components of broadband noise in the output signal of a cavitation sensor. BIV is a signal caused by the effect of bubbles produced by acoustic cavita…
Abstract The microstructure of the aluminium alloy 6060 after industrial scale (cross‐section 50×50 mm2) equal‐channel angular pressing (ECAP) is studied. We focus on processing without additional backpressure in order to allow the formation of a corner gap and the corresponding development of a distinct strain gradie…
The magnetoresonance and dielectric properties of a number of crystals of a new family of multiferroics, namely, rare-earth ferroborates RFe3(BO3)4 (R = Y, Eu, Pr, Tb, Tb0.25Er0.75), are studied in the sub-millimeter frequency range (ν = 3–20 cm−1). Ferroborates with R = Y, Tb, and Eu exhibit permittivity jumps at tem…
Despite the recent research interest in the field of nanoparticles delivery system, their structure modification and transport behavior of various hydrophobic drugs is poorly developed. In this article the synthesis of novel amphiphilic diblock copolymer poly([R]-3-hydroxyvalerate)-block-monomethoxy poly(ethylene glyc…
Concrete is a material used all over the world for civil engineering but the mechanisms governing its dynamic behaviour are still not well understood. In this work, spalling tests and edge-on impact experiments have been used to determine the influence of the free-water contained in pores and micro-cracks on the dynam…
Medium-voltage (MV) sensors for the Smart Grid are an evolving tool for the electric utility distribution engineer. Historically, to remotely monitor the power system flow on a distribution system, the most common option available was traditional current transformers (CTs) and potential transformers (PTs) combined wit…
Reliable use of Shape Memory Alloys (SMA) in mitigation of extreme load effects requires a deep study of the SMA behavior according to the necessities of the application. Damping the oscillations induced by one storm of three or four days with a strong wind and/or rain usually requires more than one million of working…
Several commercial computational fluid dynamics (CFD) codes now have the capability to analyze Eulerian two-phase flow using the Rohsenow nucleate boiling model. Analysis of boiling due to one-sided heating in plasma facing components (pfcs) is now receiving attention during the design of water-cooled first wall panel…
Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.
Phenol derivatives in laboratory prepared solutions were determined with a platinum electrode coated with poly2, 5-dimethoxyaniline phenanthrene sulphonic acid (PDMA-PSA) polymer layer. The electrically-conducting polymers were prepared by synthetic polymerisation of monomer solutions of 2, 5 dimethoxyaniline and phen…
In this study, poly(ethylene terephthalate) (PET) wastes bottle was recycled by glycolysis process using ethylene glycol. The unsaturated polyester resin (UPR) was then prepared by reacting the glycolysed product with maleic anhydride. The blend of UPR based on recycled PET wastes with liquid natural rubber (LNR) was…
The quality of physical vapor deposition (PVD) grown barrier/seed interface in Cu interconnect metallization was significantly improved by enhancing Cu nucleation on the Ta barrier surface. This was accomplished through filtering of nonenergetic species from the deposition flux, increasing the fraction of Cu ions, imp…
Poly(o-toluidine) (POT), a derivative of polyaniline, has been synthesized by chemical oxidative polymerization. The synthesized POT is doped with ferrous sulfate. The dc conductivity of POT samples in pellet form is measured in the temperature range of 30°–100°C and is found to increase with temperature, showing the…
Similarly to unfilled polymers, the dynamic mechanical properties of polymer/organoclay nanocomposites are sensitive to frequency and temperature, as well as to clay concentration. Richeton et al. (2005, “A Unified Model for Stiffness Modulus of Amorphous Polymers Across Transition Temperatures and Strain Rates,” Poly…