Materials Literature
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Compounds containing rare earths are of increasing technological interest especially because of their unique mechanical, magnetic, electrical, and optical properties. Among them, rare earth oxyorthosilicates are attractive scintillators for γ‐ and X‐ray spectroscopy and detection. However, there are many structural as…
Eu 3 + doped yttrium aluminum garnet (YAG) nanoparticles were synthesized by sol-gel method. The samples were characterized by x-ray diffraction (XRD), transmission electron microscopy (TEM), and photoluminescence (PL) spectroscopy including vacuum ultraviolet (VUV) PL spectroscopy. XRD confirmed that each and every p…
The results of designing, fabricating, and testing experimental samples of memory matrices whose memory element is based on self-formed conducting nanostructures created in electroformed open “sandwich” structures Si- SiO 2 -W are given. A possible practical usage of such memory is shown. The unique combination of its…
Montetrisaite, a new hydroxy-hydrated copper sulfate mineral species from Monte Trisa, Torrebelvicino, Vicenza, in Italy, has chemical formula Cu6(SO4)(OH)10•2H2O. It is associated with galena, sphalerite, chalcopyrite, cerussite, anglesite, oethite,\nlangite, posnjakite, linarite and redgillite. The crystals are blue…
The reaction of carbohydrate-substituted α-diazoacetates with meso-tetrakis(pentafluorophenyl)porphyrinatozin(II) allows the synthesis of new glyco-hydroporphyrin derivatives.
Several strategies to form multicomponent films of functional polymers, with micron, submicron and nanometer structures, intended for plastic electronics and biotechnology are presented. These approaches are based on film deposition from polymer solution onto a rotating substrate (spin-casting), a method implemented a…
The influence of the method used for preparing As 2 Se 3 amorphous layers on the processes of charge transfer and charge accumulation in these structures is studied. Different physical parameters, such as the contact capacitance, the width of the charge accumulation region, and the time of transit of charge carriers t…
Due to fast hydrolysis of AlN when in contact with water, AlN based ceramics are processed in organic solvents, which are volatile, expensive, harmful to the health and environment. The present work intends to protect AlN powder against hydrolysis in order to enable aqueous processing of AlN based ceramics. A commerci…
Garnet solid solutions have been synthesized across the skiagite-Fe-knorringite (Fe 3 2+ Fe 2 3+ Si 3 O 12 - Fe 3 Cr 2 Si 3 O 12 ) binary join. Such compositions reflect a simple Cr-Fe 3+ exchange on the octahedral sites, with Fe 2+ occupying the adjacent dodecahedral sites. Solid solution is complete across the join…
The self-assembling peptide, RAD16-II (Ac-RARADADARARADADA-NH2), has been shown to have many great applications in nanotechnology and tissue engineering. But few studies have been carried out to study the application of self-assembling peptides as a drug carrier. We used hydrophobic drug pyrene as a model and liposome…
Abstract Application of epoxidized and hydroxylated natural oils as a new group of environmentally friendly and renewable raw materials for the synthesis of high molar mass epoxy resins is described. Selected vegetable oils were first oxidized and next reacted with mono and diethylene glycols. Obtained epoxidized soyb…
Hexagonal and preferentially oriented three-dimensional ZnO tripods have been grown on p-Si [100] substrates by a simple vapor-solid technique without using any catalysts. The tripodal-core growth route involves the formation of a hexagonal disk with [0002] larger surfaces. The tripods show irreversible shape transfor…
Ti K-edge x-ray absorption near-edge spectroscopy (XANES) and Raman scattering were used to study the solid solution effects on the structural and vibrational properties of Pb1−xBaxZr0.65Ti0.35O3 with 0.0<x<0.40. Compared with x-ray diffraction techniques, which indicates that the average crystal symmetr…
Rhodospirillum rubrum is among the bacteria that can assimilate acetate in the absence of isocitrate lyase, the key enzyme of glyoxylate shunt. Previously we have suggested the functioning of a new anaplerotic cycle of acetate assimilation in this bacterium: citramalate cycle, where acetyl-CoA is oxidized to glyoxylat…
Abstract Micron‐sized gold nanosheets were produced through thermolysis of a mixture composed of 1‐octa‐decanylimidazole (C 18 ‐im) and HAuCl 4 in a molar ratio of 4:1 at 200 °C for 1 h. Effects of the molar ratio of [ 18 ‐im]/[HAuCl 4 ], the reaction temperature, and the N‐alkylimidazole chain length were studied. Ad…
An improved hydrogen adsorption capacity of 0.5–0.6 wt% was obtained at room temperature and 10.0 MPa pressure for commercial MWNT sample by γ-ray irradiation, compared with 0.33 wt% of pristine MWNTs. The irradiation-induced defects in structure, which is favorable for hydrogen adsorption, were characterized by ESR s…
We studied the transport and magnetic properties of low-doped manganite films after different oxygenation processes. The oxygen content was adjusted by postdeposition annealing at different oxygen pressures and annealing times. For all the samples we observed an increase in the Curie temperature and the remnant magnet…
The surface tension coefficients of chalcogenide glasses are estimated. It is demonstrated that, to a first approximation, the results of the existing techniques for estimating the surface tension coefficients of chalcogenide glasses are in satisfactory agreement. The energies of formation of fluctuation microvoids in…
This paper focuses on the synthesis of gold nanorods by a seeding growth approach in the presence of cetylthrimethylammonium bromide as a weak reducing agent. The pH value of the solution is an important factor in the formation and control the morphology of gold nanorods. In the pH-dependent range from pH 3.3 to pH 2.…
The multibubble sonoluminescence spectra of argon-saturated aqueous salt solutions of alkaline and alkaline earth metals exhibit an intense enhancement of atomic emission with respect to continuum emission with an increase in the hydrostatic pressure and decrease in the solution temperature. It is suggested that ion r…