Materials Literature
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A fuel cell-supercapacitor hybrid power supply for portable applications is designed. To ensure system level simulation, each component is accurately modelled and simulation results are reported. A digital still camera is selected as specific load device, although the choice of a specific application does not influenc…
Abstract Photocatalytic reduction of Ag I 2 SO 4 from aqueous solutions is observed in the presence of Dawson‐derived sandwich type polyoxometalates (POMs) [M 4 (P 2 W 15 O 56 ) 2 ] 16− , M = Co 2+ , Ni 2+ and Zn 2+ as photocatalyst and an organic substrate (propan‐2‐ol) as sacrificial electron donor. The direct photo…
The purpose of this study is to assess the effect of van der Waals interactions within multi-walled carbon nanotubes with the three dimensional finite element models. The elastic buckling behaviors of nanotubes are treated under axial compressive force acting on open both ends of nanotubes and considered with various…
Polyhydroxyalkanoate (PHA) is biodegradable polyester, which can be synthesized by many microorganisms through catabolic pathway, without producing any toxic byproduct. Owing to it special and versatile properties, this polymer has attracted much attention as a possible replacement for traditional plastics in the futu…
The anomalous magnetocaloric effect in singlet rare-earth paramagnets near energy level crossing has been experimentally observed for the first time. The magnetization and differential magnetic susceptibility of Ho1 − x Y x VO4 crystals (x = 0, 0.5) measured along the tetragonal axis in a pulsed magnetic field with va…
The influence of additions of difficult-to-reduce Al 2 O 3 and MgO oxides on the dispersity and morphology of nickel-based and copper-based nanodimensional compositions during their obtainment by chemical methods is considered. The conditions of directed synthesis of metal oxide nanopowders allowing for the nature and…
The formation of a series of six-coordinate complexes (B)Co(TPP)(NO 2 ) (B is ketone, aldehyde, ether or epoxide; TPP is meso -tetraphenylporphyrin dianion) on exposure of thin films of five-coordinate Co(TPP)(NO 2 ) to vapors of the O-donor ligands was established by IR and UV/Vis spectroscopy (resorting to the data…
"Focus on martensitic transformations." Materials Science and Technology, 24(8), p. 883
The specific features of the thermodeformational behavior of Mn-Cu-based alloys with the two-way shape memory effect are revealed, and their connection with the diffusionless fcc → fct phase transition and the forming structure is discussed. The mechanism of the reversible thermal deformation caused by directed intern…
Bench scale (1 to 6 gram) methane cracking tests have been performed on a variety of pure elements, some alloys, and SAES® commercial getters St 101, St 198, St 707, St 737, and St 909 to determine methane cracking performance (MCP) of 5% methane in a helium carrier at 700°C, 101.3 kPa (760 torr) with a 10 sccm feed.…
Dielectric barrier discharge (DBD) as the source of nonthermal plasma has attracted the attention of many researchers in the field of diesel exhaust-gas treatment. The authors have studied the DBD, particularly using the anodic porous alumina, which have many pores with nanometer-order diameter and high aspect ratio,…
The feasibility of sintering on indium tin oxide (ITO) thin film by a mesoplasma under open atmosphere was investigated. An ITO film of 300 nm thickness was prepared on a glass substrate by spin coating an ITO nanoparticle suspension. A mesoplasma of a gliding arc was irradiated on the ITO film. The plasma generated a…
The present study covers the design and analysis of a thermionic scanning electron microscope (SEM) column.The SEM column contains an electron optical system in which electrons are emitted and moved to form a focused beam, and this generates secondary electrons from the specimen surfaces, eventually making an image.Th…
The effects of hydrogen levels on microstructure of porosity and mechanical properties of magnesium alloy castings were investigated. The hydrogen content of AZ91 alloy melt under Ar+HFC-134a mixed gas protection was 103 cm3 kg−1, which was less than that of 139 cm3 kg−1 under flux protection, therefore the effect of…
We present a fabrication technique for the integration of a gate electrode with an array of carbon nanotube (CNT) emitters. These gated cathode structures have high emission current density and may be utilized in X-ray tubes, traveling wave tubes, and ion propulsion systems. The CNT emitters are grown directly on poli…
Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New Mexico, USA, August 3 – August 7, 2008
A section of retrieved Hubble Space Telescope (HST) bi-stem thermal shields (BSTS), which experienced 8.25 years of space exposure, was analyzed for space environmental durability. The shields were comprised of 2 mil (0.051 mm) aluminized-Teflon® fluorinated ethylene propylene (Al-FEP) rings fused together into a circ…
In this work, the sodium salt of 2-acrylamido-2-methylpropanesulfonic acid (Na-AMPS) was photopolymerised in aqueous solution with ethylene glycol dimethacrylate (EGDM) added as a crosslinking agent and 4,4'-azo-bis(4-cyanopentanoic acid) as the water-soluble photoinitiator. The aqueous solution was poured into a vert…
Chloro[octakis(9-anthracenylmethylthio)porphyrazinato]iron(III), ([FePzCl]), was prepared by the reaction of metal-free porphyrazine with iron(II) acetate and further treatment with HCl solution. The monomeric bisaxial complex [FePz(py) 2 ] as well as the bridged complex [FePz(pyz)] n were formed as stable complexes b…
Porous Clay Heterostructures (PCHs) have been prepared by the surfactant-directed assembly of mesostructured silica within the two-dimensional interlayer galleries of clays. The PCH is an interesting material to use as entrapping system such as ethylene scavenger, owing to its high surface area with uniform and specif…