Materials Literature
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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…
The thermal and moisture sensations are widely recognised as the most important factors contributing to the discomfort of subjects during exercise. The aim of this work is to find a new method of assembling different kinds of fabrics in clothing to achieve maximum thermal-wet comfort during exercise. The thermal-wet c…
Tetragonal alkali metal tungsten bronze and hexagonal alkali metaltungstate nanorods have been synthesized by sub-ambient reduction by alkalide solutions and subsequent oxidation. Tetragonal potassium tungsten bronze, K0.4WO3, nanorods result after post-reduction annealing at 250 °C for 3 h followed by 600 °C for 4 h…
We describe herein a novel, selective and sensitive biosensing system based on the dissolution and aggregation of single-walled carbon nanotubes directed by the aptamer-protein interaction for the clinical assays of proteins.
A method has been developed to determine cathodic reaction rates and the corrosion kinetics at individual substrate grains on the micrometer scale using scanning electrochemical microscopy measurements. By fitting experimental probe approach curves to numerically simulated curves, "standard" rate constants for the cat…
Abstract At high temperatures above 200 K, significant increase in thermal conductivity ( κ ) was observed for the Al-based icosahedral quasicrystals and their corresponding approximants. By comparing the measured κ of the Al—Re—Si 1/1-cubic approximants with their electronic density of states at the Fermi level ( ε F…