Materials Literature
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Silica coatings doped with spiropyran (SP) were prepared using xylene solutions of perhydropolysilazane (PHPS) as the silica source, where the SP-doped PHPS coatings were prepared by spin-coating and the PHPS-to-silica conversion was achieved by exposing the coatings to the vapor from aqueous ammonia at room temperatu…
The material properties of toroidal invisibility cloaks are derived based on the coordinate transformation method. The permittivity and permeability tensors for toroidal cloaks are substantially different from those for spherical cloaks, but quite similar to those for 2D cylindrical cloaks because a singularity is inv…
Highly dispersed ZnO nanoparticles with variable particle sizes were successfully prepared within an amphiphilic hyperbranched polyetherpolyol matrix via decomposition of an organometallic precursor in the presence of air leading to stable nanocomposites. The high degree of stabilization during and after the synthesis…
The solubility of 3,5-dimethoxybenzoic acid, 4-cyanobenzoic acid, 4-acetoxybenzoic acid, 3,5-diaminobenzoic acid, and 2,4-dichlorobenzoic acid in ethanol was measured by both static method and dynamic method over the temperature range from (298.15 to 318.15) K under atmospheric pressure. The experimental data were cor…
We have studied the adsorption of NO, and the coadsorption of N and O, on four physical and hypothetical systems: unstrained and strained Rh(100) surfaces and monolayers of Rh atoms on strained and unstrained MgO(100) surfaces. We find that as we go from Rh(100) to Rh/Mg0(100), via the other two hypothetical systems,…
It has been appreciated for some time that the novel properties of particles in the size range 1-10 nm are potentially exploitable in a range of applications. In order to ultimately produce commercial devices containing nanosized particles, it is necessary to develop controllable means of incorporating them into macro…
A mathematical model is developed for the simulation of the chemical and transport phenomena in three-way catalysts for natural-gas vehicles, with honeycomb and foam substrates. The chemical phenomena are modelled on the basis of a simplified approach, which assumes that pollutant conversion is governed by oxygen stor…
Abstract Alibardi, L. 2010. Autoradiographic observations on developing and growing claws of reptiles. — Acta Zoologica (Stockholm) 91 : 233–241 The present qualitative autoradiographic analysis aims to present the main features of morphogenesis and growth of claws in reptiles. Lizard embryos treated with tritiated th…
The effect of the Y 2 O 3 concentration in yttria‐stabilized zirconia (YSZ) on the thermophysical property of porous YSZ was studied. The specific heat capacities ( C p ), the thermal diffusivity (α), the apparent density (ρ) of a 3 mol% Y 2 O 3 /97 mol% ZrO 2 (3YSZ), and an 8 mol% Y 2 O 3 /97 mol% ZrO 2 (8YSZ) were m…
Influence of ageing conditions on the mechanical properties of Te–As–Se fibres, Delaizir, Gaelle, Sangleboeuf, Jean-Christophe, King, Ellyn A, Gueguen, Yann, Zhang, Xiang-Hua, Boussard-Pledel, Catherine, Bureau, Bruno, Lucas, Pierre
The removal of glycerol by adsorption from biodiesel washwaters has been studied at room temperature using various adsorbent materials, including activated carbons, clay minerals, and natural and synthetic zeolites. Activated carbon exhibited the best adsorption for glycerol among the examined materials. Glycerol adso…
In this letter we present simulation and experimental results of a left-handed converging biconcave metallic lens made of stacked subwavelength hole arrays (SSHAs) working in the millimeter wave range with additional features of polarizer and frequency filter. The converging behavior of the biconcave metallic lens, in…
A tunable hydrothermal synthesis of single-crystalline BaMnO 3 nanoparticles is reported. The parameters governing the synthesis pathway are carefully evaluated, assessing their influence on both the morphology and size of the as-prepared products. The reactor filling volume is found to have a main influence on the pa…
The photochemistry of caged compounds of the o-nitrobenzyl type has been investigated thoroughly in the past. However, even recently new side reactions have been discovered. Earlier, we reported [Bley, F., K. Schaper, and H. Görner (2008), Photochem. Photobiol.84 162-171] that we found long-lived triplet states which…
Brillouin spectroscopy of Pb(Sc0.5Nb0.5)O3 single crystals reveals an order-disorder ferroelectric phase transition occurs at 110 °C upon cooling. A softening of the longitudinal acoustic (LA) mode is observed that can be attributed to the coupling between polar nanoregions and acoustic modes. A critical slowing down…
We investigate the crystal structure and physical properties of 2,4- and 3,4-dihydroxybenzaldehyde-4-nitrophenylhydrazone (DHNPH) isomer crystals to understand the relation between molecular ordering with noncovalent interactions based on phenolic OH groups. The microscopic and macroscopic optical nonlinearities of 2,…
A large magnetoresistance is expected when half-metallic ferromagnets are used in magnetic tunneling junctions with polycrystalline AlOx barrier. We demonstrate by in situ tunneling microscopy how the atomically smooth morphology of Co2Cr0.6Fe0.4Al Heusler thin films results in unfavorable wetting properties of the Al…
We have found that a copper ion-exchanged MFI (Mobil Five)-type zeolite, having an ion exchange capacity of 112% (CuMFI-112), exhibits a specific interaction with CH 4, even at room temperature. The observed properties are very remarkable compared with those found in the adsorbed amount of sodium ion-exchanged MFI and…
We have studied spontaneous polarization, switching time and dielectric parameters (namely dielectric strength, relaxation frequency, distribution parameter) of a 5 µm thick planar oriented sample of a highly tilted anti-ferroelectric liquid crystal material (S)-(+)-(1-methylheptyloxycarbonyl) phenyl 4'-(6-perfluorope…
Research on down conversion phosphor materials is the key for the development of solid‐state lighting (SSL). Especially finding alternative red phosphor for white light emitting diodes (LEDs) based on blue or near ultraviolet (NUV) LEDs is important research task. In this view, we have synthesized a series of Eu 3+ ‐s…