Materials Literature
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The creep behavior in pure aluminum has been investigated by helicoid spring creep tests at strain rates, \\dotε, lower than 10−10 s−1 and low temperature ranging from 0.32Tm to 0.43Tm. It was found that the creep behavior in this region depends strongly on grain sizes and impurity concentrations. For high-purity alum…
The sonochemical oil-in-water miniemulsion polymerization of n-butyl methacrylate (BMA) has been studied in mixtures with a range of aliphatic and aromatic hydrocarbon liquids under ambient conditions. Measurements of monomer conversion percentage and molecular weights of the BMA polymers were performed to investigate…
Though numerous metal-organic frameworks or polymers have been reported, the organic building blocks are usually not redox-active. On the other hand, some mono-, di- or tri-nuclear compounds with tetrathiafulvalene (TTF) have been prepared, although little is known about the coordination polymers combined with paramag…
Abstract Graphite nanosheet (GNS) was prepared by physical/chemical method. The polyaniline (PANI)/graphite nanocomposites were synthesized by in situ polymerization of aniline monomer using different amounts (1 to 5 wt%) of graphite nanosheets. The formation of graphite nanosheets was confirmed by Transmission Electr…
We report here a simple synthetic route to Au-Fe(x)O(y) heterostructures in which spinel ferrite (Fe(x)O(y)) grows as a nanorod on a spherical gold (Au) seed. The large red shift in the plasmon resonance in the heterostructures could be explained by a dielectric effect (although we could not entirely exclude a contrib…
In the VEGA program on radionuclide release from irradiated fuel under severe accident conditions, 10 tests in total were performed at JAEA from 1999 to 2004 under inert and steam atmospheres including the highest pressure or temperature conditions. These tests showed the increase in release rate above 2,800K or at th…
Thermoelectric properties of Al-doped ZnO (Zn0.98Al0.02O) with nanosized pore (nanovoid) structure were investigated. Nanovoids were formed by using monodisperse polymethylmethacrylate (PMMA) particles of 150, 425, and 1800 nm in average diameter as a void forming agent (VFA). Whereas the thermal conductivity of the s…
In this work we have investigated the detection of aminoglutethimide (AGI) drug based on its adsorption on gold nanoparticles employing Surface-Enhanced Raman Spectroscopy (SERS) and plasmon resonance. The adsorption of AGI on Au was studied at different experimental conditions, such as the excitation wavelength, the…
The metal complexes, [M(Hdammthiol)(2)]Cl·3H(2)O [M = Cr(III) (1), Fe(III) (2)] [where H(2)dammthiol is the thiol form of the ligand, diacetylmonoxime morpholine N-thiohydrazone] were synthesized by metal template reactions of diacetylemonoxime with morpholine N-thiohydrazide in the presence of CrCl(3)·6H(2)O and FeCl…
In this study, we report the structure and shape of new polymeric nanofibers entrapped with QDs, which were prepared by electrospinning a homogenous mixture of polymers and QDs. Uniformly distributed QDs within the polymer matrix seem to induce the high degree of compactness and shape rigidity in the nanofibers, and r…
Fluorocarbon nanostructures possess an outer halogenated crown that plays the role of an interface towards their environment and whose properties are then crucial for anticipating the integration of the latter materials in nanotechnology processes. Therefore, the result of fluorine addition to nanocarbon frames has be…
Temperature dependence of phase composition and phase transition in the BaTiO3 nanotube arrays were examined by x-ray diffraction and Raman analyses. The BaTiO3 nanotube arrays exhibited a distinct phase transition behavior from −190 to 300 °C. Tetragonal phase was found to coexist with cubic phase in the BaTiO3 nanot…
In the present study, we discuss the synthesis of Polyaniline (PAni (ES)) and its composites with Poly-methylmethacrylate (PMMA). PAni doped with Dodecyl benzene sulfonic acid (DBSA) has been synthesized through chemical oxidation of aniline in presence of Ammonium persulphate (APS). Composites of PMMA and PAni have b…
Outdoor insulation represents an important component of electric power transmission and distribution systems considering that a single insulator failure can result to an excessive outage of the power system. Different insulator designs and materials are employed by power corporations and their behavior is investigated…
Unmodified (Ch) and ionically crosslinked with sodium tripolyphosphate (Ch/TPP) chitosan membranes were prepared. Various crosslinking conditions (pH, crosslinking time) were applied. Differences in membrane molecular structure was examined using FTIR spectroscopy. Scanning electron microscopy (SEM) coupled with Energ…
Scopul acestei lucrari este prepararea si caracterizarea unui material nanocompozit pe baza de montmorillonit (MMT) si alginat de sodiu in care a fost incorporat medicamentul antitumoral carboplatin (CP). Acest material compozit poate funcţiona ca sistem cu eliberare de medicament (DDS) si poate reprezenta alternativa…
In this work, we investigated the effects of the ambient liquid medium on the size, optical and stability properties of gold nanoparticles synthesized by electrical explosion of wire. The explosion process was carried out in deionized water, cetyl trimethyl ammonium bromide (CTAB), sodium dodecylbenzenesulfonate (SDBS…
Abstract Efficient algorithms for the simulation of strained heteroepitaxial growth with intermixing in 2+1 dimensions are presented. The first of these algorithms is an extension of the energy localization method [T. P. Schulze and P. Smereka, An energy localization principle and its application to fast kinetic Monte…
Calcium fluoride (CaF 2 ) nanoparticles were synthesized by co-precipitation method and characterized by powder X-ray diffraction (PXRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM). Also, optical absorption (OA) and photoluminescence (PL) studies on gamma irradiated (-rayed) CaF…
Zinc Sulfide (ZnS) quantum dots of sizes 2.68-4.8 nm, embedded on polyvinyl alcohol (PVA) matrix, have been synthesized at 70C by chemical route. X-ray diffraction (XRD), High Resolution Transmission Electron Microscopy (HRTEM), Scanning Electron Microscopy (SEM), UV-VIS Spectroscopy and Photoluminescence (PL) Spectro…