Materials Literature
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Chemical recycling of Polyethylene terephthalate, PET, wastage has been investigated in this study. The aim of this work is recovery of terephthalic acid and ethylene glycols from PET waste. This process has been done in two stages. At the first stage, reaction between PET waste and sodium hydroxide for production of…
Solid catalysts have been prepared by chemical interaction of iron(III) porphyrins with the surface of the pores of a silica matrix obtained by the sol-gel method. The presence of the complexes in the silica matrix and the morphology of the obtained particles were studied by UV-Vis spectroscopy, powder X-ray diffracto…
We demonstrated the wafer level batch synthesis and fabrication of single semiconducting thermoelectric nanoribbon based devices by Lithographically Patterned Galvanic Displacement (LPGD). The shape, composition, and dimension of nanoribbons were tailored by adjusting deposition conditions. High resolution TEM images…
An amphiphilic multiblock copolymer, [poly(4-vinylpyridine)-b-polystyrene-b-poly(4-vinylpyridine)](n) (P4VP-PS-P4VP)(n) bearing trithiocarbonate moieties (-S-CS-S-), was used as capping agent to fabricate the functional copolymer-capped Au nanoparticles. Due to the amphiphilic character of the multiblock copolymer, th…
Having established that molecules with general formulae [MnIII6O2(R-sao)6(O2CR)2(L)4–6] ([Mn6]) and [MnIII3O(R-sao)3(X)(L)3] ([Mn3]) (saoH2 = salicylaldoxime; R = H, Me, Et etc; X = RCO2−, ClO4−; L = solvent), with the latter being the analogous “half” molecules of the former, exhibit the phenomenon of single-molecule…
Self-assembled peptide-polymer nanotapes of poly(ethylene oxide)-peptide conjugates are modified by a simple amine-azide transfer to create azide-containing nanofibres, which provide a platform for modular functionalization as demonstrated by the introduction of different carboxyl bearing entities to modulate the calc…
In this paper, the mechanism of moisture transport across porcine skin has been investigated. Such work has implications on transdermal delivery of hydrophilic drugs. Past studies conducted in this area mostly relied on studying the process of moisture absorption. Mathematical models proposed for this transport proces…
Investigations of the electrocaloric effect in ferroelectric materials are of interest for applications and of importance for an adequate description of the electrical properties of ferroelectric films, in particular, their switching dynamics. A theoretical approach is developed based on the Landau-Khalatnikov model,…
We describe an efficient strategy for designing high-performance fast-photochromic molecules with increased photosensitivity to solar UVA radiation. The photosensitivity of [2.2]paracyclophane-bridged imidazole dimers can be readily enhanced through appropriate design of the phenyl rings attached to the imidazole ring…
Spatial and temporal algal diversity changes were studied in the major drinking water source of Israel - the Upper Jordan River. During 2006-2009, we found 232 species and infraspecies of algae and cyanobacteria: 85 of which were new for the Upper Jordan River Basin including three new for Israel. During many years of…
The influence of a natural extract of fenugreek on the corrosion of steel in 1 M HCl has been studied by weight loss, polarisation and EIS measurements. Results obtained show that the natural substance inhibits the corrosion process. It acts on the cathodic domain without modifying the reduction mechanism. The inhibit…
Ionic and Electronic Conductivities and Fuel Cell Performance of Oxygen Excess-Type Lanthanum Silicates, Mineshige, Atsushi, Nakao, Takayuki, Ohnishi, Yoshiki, Sakamoto, Ryuta, Daiko, Yusuke, Kobune, Masafumi, Yazawa, Tetsuo, Yoshioka, Hideki, Fukutsuka, Tomokazu, Uchimoto, Yoshiharu
A novel carbonaceous nanocomposite pellicle was prepared by one-step mild hydrothermal carbonization of bacterial cellulose pellicle soaked in glucose solution. The nano-fibrous structure of bacterial cellulose remains intact while carbonaceous spheres with nanometre sizes were generated from glucose during hydrotherm…
Carbon nanofibers (CNFs) have been incorporated into poly(methyl methacrylate) (PMMA) through electrospinning. The resulting micro- and nanofibers have been characterized by Scanning Electron Microscopy (SEM), which confirmed fiber formation and demonstrated a core-sheath structure of the PMMA fibers. Thermogravimetri…
We study via self-consistent Born approximation a model for sound waves in a disordered environment, in which the local fluctuations of the shear modulus G are spatially correlated with a certain correlation length . The theory predicts an enhancement of the density of states over Debye's 2 law (boson peak) whose inte…
The nanoscale indium tin oxide (ITO) particles are synthesied by liquid phase coprecipitation method under given conditions with solution of indium chloride, tin chloride, and ammonia. The absolute ethyl alcohol or deionized water was used as solvent and the dodecylamine or hexadecylamine surfactant was used as a disp…
Zr-doped In2O3 (Zr-In2O3) (222) epitaxial layers of thickness 210 nm were grown on yttria-stabilized zirconia (YSZ) (111) and Al2O3 (0001) substrates with rf magnetron sputtering at 350 °C in an atmosphere deficient in oxygen. X-Ray scattering and use of a transmission electron microscope (TEM) revealed Zr-In2O3 films…
We have demonstrated that the formation of multi-stranded nanofibers with tunable chirality from coordination polymers and their hierarchical assembly into interconnected 3-D networks leading to thermoresponsive gelation.
For developing functional biomaterials, an understanding of the biological response at material surfaces is of key importance. In particular, surface chemistry, roughness and cell type influence this response. Many previous reports in the literature have involved the study of single cell types and their adhesion to su…
The non-classical KP(6)Mo(18)O(73) heteropolyanion has been studied by the density functional theory (DFT) method, and the calculated geometry compares well with the experimental one. In fully oxidized [KP(6)Mo(18)O(73)](7-) state, the d(xy)-orbitals centered at eight "belt" Mo sites in the lower part of the "basket"…