Materials Literature
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Ammonium polyphosphate forms II, V, and VI have been prepared by new preparation processes using ammonium orthophosphate, urea and/or phosphorus pentaoxide as starting materials. The preparation processes are very useful for a large scale preparation in a factory. These crystal phases of APP showed flame retardant eff…
A novel water-soluble silicon compound was synthesized by the reaction between tetraethoxysilane (TEOS) and propylene glycol. This compound is stable in aqueous solutions and miscible with water in any ratio. The potential of this new silicon reagent for synthesis of multicomponent silicate by solution based technique…
The adsorption of atomic oxygen on the Ni（111） surface has been systematically investigated through first-principles DFT-GGA methods in wide ranges of coverage. It was found that the fcc hollow site is the energetically most favorable for the whole coverage range considered. The adsorption energy decreases with the co…
\n Zero-modes, their topological degeneracy and relation to index theorems have attracted attention in the \nstudy of single-layer and bilayer graphene. For negligible scalar potentials, index theorems can explain why the degeneracy \nof the zero-energy Landau level of a Dirac Hamiltonian is not lifted by gauge field…
CdS nanocrystalline thin films have been prepared by sol-gel spin coating method. CdS nanoparticle thin films have been prepared using cadmium nitrate as cadmium source and thiourea as sulfur source. The effect of annealing on the properties of the prepared CdS nanocrystalline films has been studied. The x-ray diffrac…
The problem of extracting information from relative intensities of Raman peaks in surface-enhanced-Raman-scattering (SERS) is intimately related to several important topics in the technique. Among them: (i) the possibility (or sometimes impossibility) of observing surface selection rules in different situations, (ii)…
Several divalent europium-doped alkali-earth silicon oxide or nitride (AESON) phosphors, which are of great use in white light-emitting diodes, exhibit a two-peak emission. We examined the two-peak emission of , which is known as a representative AESON phosphor. The two-peak emission is closely associated with the ene…
Water-soluble, stable quantum dots consisting of a CdTe core with shells of CdS and ZnS have been prepared using a simple successive injection of precursors in one-pot technique. The particles exhibited type II behaviour and were successfully used in imaging HeLa cells.
In this paper, we have described a chiral binaphthyl-based fluorescent organogel. Very interestingly, similar to sonocrystallisation of organics, ultrasound can promote the gelation while it cannot occur spontaneously at relatively high temperature or low concentration. The fluorescence enhancement of the gel obtained…
Deposition of Platinum Particles at LSM/ScSZ/Air Three-Phase Boundaries Using a Platinum Current Collector, Xiong, Yueping, Yamaji, Katsuhiko, Kishimoto, Haruo, Brito, Manuel E., Horita, Teruhisa, Yokokawa, Harumi
Extended hybrid conjugated systems based on a triphenylamine core with 1, 2 and 3 peripheral dithiafulvenyl units have been studied by cyclic voltammetry and UV-Vis absorption spectroscopy. The substitution pattern of the triphenylamine core determines two different electrochemical coupling mechanisms leading to two t…
The present paper discusses the frequency equation for torsional waves in a self-reinforced medium. It can be seen that the phase velocity of torsional waves in a self-reinforced rod of circular cross section is influenced by the reinforced parameters. Numerical computation shows that the presence of the reinforcement…
Three novel lanthanide coordination polymers with large channels and water clusters, [Yb2(pztc)1.5(H2O)6]·7H2O (1), [Lu2(pztc)1.5(H2O)6]·7.5H2O (2) and [Er2(pztc)1.5(H2O)6]·7H2O (3), have been synthesized by the reactions of pyrazine-2,3,5,6-tetracarboxylic acid (H4pztc) and Ln(III) salts in aqueous solution at room t…
The stable and homogeneneous aqueous suspension of carbon nanotubes was prepared in this study. The stability of the nanofluids was improved greatly due to the use of a new dispersant, humic acid. The thermal conductivity of the aqueous suspension was measured with the 3ω method. The experimental results showed that t…
Sodium borohydride (NaBH4) reacts with water to produce 4 mol of hydrogen per mol of compound at room temperature. Under certain conditions, it was found that 6 mol of hydrogen per mol of sodium borohydride was produced in the presence of electrical field created by DC voltages, whereas 4 mol of hydrogen was produced…
Biodegradation of untreated and treated thermoformed polymer polylactic acid (PLA) under anaerobic conditions was investigated. Treatments consisted of subjecting PLA to irradiation (gamma source and e-beam) and steam (120C for 3 h). Absorbed doses were 72 and 172 kGy for gamma-irradiated samples and 72, 144, and 216…
We controlled reflection colour of the glass-forming cholesteric liquid crystals over the whole visible region using the smectic liquid crystalline photochromic dopants on the basis of the different mechanism from the conventional helical twisting power change, which gave rise to full-colour recording and display mate…
Intermediate chemical species involved in the formation dynamics of gold nanoparticles triggered by photoreduction were detected on the temporal range from microseconds to seconds by the near-field heterodyne transient grating method. In the dynamic processes, it was found that not only the ionic species of gold (H[Au…
The magnetocaloric properties of powder samples of the monoclinic YFe2H4.2, YFe2D4.2, and Y0.5Tb0.5Fe2D4.2 compounds have been studied at their itinerant electron metamagnetic transition (TM0=131, 84, and 127 K, respectively). Large reversible entropy changes are observed, up to −ΔSM=10.83 J K−1 kg−1 for a field varia…
The new ! -Fe(Te,Se) superconductors share the common iron building block and ferminology with the LaFeAsO and BaFe2As2 families of superconductors. In contrast with the predicted commensurate spindensity-wave order at the nesting wave vector ( , 0), a completely different magnetic order with a composition tunable pro…