Materials Literature
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Phase change memory (PCM) cells with monolayer chalcogenide film (Ge 2 Sb 2 Te 5 or Sb 2 Te 3 ) and doublelayer chalcogenide films (Ge 2 Sb 2 Te 5 and Sb 2 Te 3 ) were successfully fabricated. The PCM cell with doublelayer structure like W/Ge 2 Sb 2 Te 5 (30 nm)/Sb 2 Te 3 (60 nm)/TiN/Al shows superior performances to…
We have fabricated novel water sensitive transparent films on flexible substrates by inkjet printing of aqueous based inks of single- and multi-walled carbon nanotubes dispersed with ultra low concentrations of the biopolymers gellan and xanthan gum.
A novel facile route with the features of low-energy consumption and cheap nontoxic source materials was designed to prepare nickel-based metals such as Ni and FeNi and carbon core/shell (Ni/C and FeNi/C) nanostructures at room temperature and ambient pressure. The Ni/C and FeNi/C core/shell nanostructures were charac…
The synthesis, X-ray structure and electropolymerization of three new carbon-carbon linked di(2-thiophenyl)carboranes (, and ) are reported; the resulting polymers bearing icosahedral ortho-, meta- or para-carborane clusters show high thermal and electrochemical stabilities in comparison with unsubstituted polythiophe…
In vitro. bioassay screening of 346 methanol extracts originated from 281 native and cultivated plant species growing in Egypt, and related to 81 families, was carried out for schistosomicidal activity. The extracts were bioassayed at 100 µg/mL on viable Schistosoma mansoni. mature worms in culture medium. Viability o…
For the first time procedures for the direct characterization of exfoliated nanosheets of LDH (Mg/Al = 3) in suspension are reported. The shape, size and layer thickness of the nanosheets were determined using small angle X-ray and neutron scattering (SAXS/SANS) in combination with dynamic light scattering (DLS) and a…
The end-product of the electrospinning process is typically a randomly aligned fiber mesh or membrane. This is a result of the electric field generated between the drop of polymer solution at the needle and the collector. The developed electric field causes the stretching of the fibers and their random deposition. By…
Fourfold symmetric zinc-octaethylporphyrin (OEP) has been incorporated in the holes of the hexagonal molecular network generated by thermal dehydrogenation of 4,9-diaminoperylene-quinone-3,10-diimine (DPDI) on a Cu(111) surface and displayed hindered rotation; the reorganization between the potential minima, a rotatio…
This paper reports the application of transparent single walled carbon nanotube films on polyethylene terephthalate as flexible electrodes in electrochromic devices using polyaniline as the active layer, where Sn-doped In2O3 on plastic is not suitable due to its high sensitivity to acids. Patterning of nanotube films…
A novel oligothiophene and its fullerene derivative were synthesized and their film morphologies were investigated. AFM images revealed that the oligothiophene formed well-aligned fiber-like nanostructures in the film after being thermally annealed at its liquid-crystalline temperature. In the oligothiophene–fullerene…
Polarization-contrast microscopy coupled with an atomic force microscope is utilized to attain far-field optical images of the multipolar surface plasmon resonance (SPR) modes of single gold nano-rod. Modulated standing modes resulted from the interference of longitudinal SPR modes and incident light are observed and…
The aim of this study was to determine the degree of conversion and residual stress of resin composite preheated to different temperatures and to compare it to room-temperature composite. The composite resin was preheated to 40 degrees C, 50 degrees C, and 60 degrees C and packed into brass rings and light-cured. The…
A bichromophoric electron donor-acceptor molecule composed of a zinc tetraphenylporphyrin (ZnTPP) surrounded by four perylene-3,4:9,10-bis(dicarboximide)(PDI) chromophores (ZnTPP-PDI(4)) was synthesized. The properties of this molecule were compared to a reference molecule having ZnTPP covalently bound to a single PDI…
Carbon nanotubes (CNT) are one of the most promising nanomaterials because of their intrinsic properties. So, it becomes urgent to assess their toxicity. However, CNT are insoluble in aqueous media required for toxicological studies. Thus, we propose a simple method to disperse CNT for toxicological studies using a bi…
Interactions of Ca(OH)2 with various modifications of SiO2: amorphous (Hi-Sil, TSD) or crystalline (quartz) silica were established. The molar ratio of primary mixtures CaO/SiO2 was 0.5. The samples were cured in a vapour chamber (20 ºC, 100 % humidity) for 7 and 28 days. The products were character-ized by X–ray diff…
Guidelines for the Operation of Burn Centers Get access Journal of Burn Care & Research, Volume 28, Issue 1, January-February 2007, Pages 134–141, https://doi.org/10.1093/jbcr/28.1.134 Published: 01 January 2007
The nucleation field for infinite magnetic nanotubes, in the case of a magnetic field applied parallel to the long axis of the tubes, is calculated as a function of their geometric parameters and compared with those produced inside the pores of anodic alumina membranes by atomic layer deposition. We also extended this…
Abstract. Among the new insulating materials widely used in high voltage outdoor insulation sys-tems, silicon rubber materials also called polymeric materials are very important; during last 20 years they have been applied for manufacturing outdoor insulators. These materials are organic in nature; therefore they are…
Ordered silica-based mesoporous materials could be specially designed and chemically modified for the adsorption of drugs that would be locally released. The drug adsorption and release kinetics are controlled by several factors such as pore size, volume, architecture and chemistry of the silica walls. Keywords: Bioce…
This work has presented a typical example to reveal the great influence of the terminal groups on the self-assembly of hyperbranched polymers. The hyperbranched polymers with hydroxyl terminal groups (HBPO-OH) were hydrophobic and precipitated in water, however, they displayed a pH-responsive self-assembly behavior wh…