Materials Literature
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A ternary system of Mn 0.5 Zn 0.5 Fe 2 O 4 has been synthesized for the first time using thermal decomposition of metal acetylacetonate in the presence of a high temperature boiling point solvent and fatty acids. Unlike the results of synthesis of this material by other techniques, we obtain nearly monodispersed nanop…
Inkjet printing has been used to prepare polymeric thin films for gas sensing. The conductive polymer poly(3,4-ethylene dioxythiophene) doped with polystyrene sulfonated acid (PEDOT-PSS) was used as the organic ink. The electrical resistance of the printed films was monitored during exposure to atmospheres containing…
We adopted an existing formalism and modified it to simulate, with high precision, the transmission, reflection, and absorption of multiple-plate birefringent devices as a function of frequency. To validate the model, we use it to compare the measured properties of an achromatic five-plate device with a broadband anti…
Flow rate effect on the structure and morphology of molybdenum oxide nanoparticles deposited by atmospheric-pressure microplasma processing, Bose, Arumugam Chandra, Shimizu, Yoshiki, Mariotti, Davide, Sasaki, Takeshi, Terashima, Kazuo, Koshizaki, Naoto
Two types of CdTe quantum dots of different sizes (4 and 5 nm) were successfully deposited on optical fibers using the layer-by-layer electrostatic self-assembly method. The sensors showed a linear and reversible variation of the emission wavelength for a temperature range from 30 degC to 100 degC, with a sensitivity…
Abstract Polyamide 6 (PA6) isotropic films and oriented cables were prepared by compression molding or by consecutive extrusion and cold‐drawing. These samples were isothermally annealed in the 120–200°C range and were then subjected to tensile tests at room temperature. Synchrotron wide‐angle X‐ray scattering (WAXS)…
The Li-N-H system holds great promise for on-board hydrogen storage applications, particularly due to reversible interactions among lithium amide $(\mathrm{Li}\mathrm{N}{\mathrm{H}}_{2})$, imide $({\mathrm{Li}}_{2}\mathrm{N}\mathrm{H})$, and hydride (LiH). However, practical applications of the system are hindered by…
Abstract Protein macromolecules derived from plants have been considered as alternative resources for various applications, including adhesives, films, rubbers, and biocomposites. Plant protein polymers are pH sensitive and need to be modified to meet application performance. This study demonstrated interactions betwe…
A series of novel second-order nonlinear optical chromophores with two non-conjugated D−π−A units have been synthesized that exhibit much higher first hyperpolarizability (β) values than the corresponding mono-D−π−A unit compounds with a slight red shift.
Abstract Molecular weight is an important factor in the processing of polymer materials, and it should be well controlled to obtain desired physical properties in final products for end‐use applications. Degradation processes of all kinds, including hydrolytic, thermal, and oxidative degradations, cause chain scission…
Abstract Intercalated and exfoliated low‐density polyethylene (LDPE)/clay nanocomposites were prepared by melt blending with and without a maleated polyethylene (PE‐g‐MAn) as the coupling agent. Their morphology was examined and confirmed by X‐ray diffraction (XRD) and transmission electron microscopy (TEM). The effec…
We report the first demonstration of an optical magnetic mirror achieved by nanostructuring a metal surface. It reverses the magnetic field of an incident wave upon reflection, acting as an 'optical frequency superconductor'.
We report on systematic investigations of the dynamics of the surface-excitonic (SX) near-band-edge photoluminescence of ZnO nanowires observed at $\ensuremath{\approx}3.365\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$. The temporal evolution of the SX emission of vapor-phase grown ZnO nanowires with diameters of $d=40--130…
Geometric and electronic structures of a gold−methanethiolate [Au 25 (SCH 3 ) 18 ] + are investigated by using density functional theory. Three types of optimized structures are derived from two different Au 25 core clusters protected by 18 methanethiolates. The most probable optimized structure consists of a Au 7 cor…
Although water is the chief component of living cells, food, and personal care products, the supramolecular components make their viscosity larger than that of water by several orders of magnitude. Using fluorescence correlation spectroscopy (FCS), photon correlation spectroscopy (PCS), NMR, and rheology data, we show…
A simple one-pot solution-phase method was developed to synthesize well-defined copper nanocubes with an edge length in the range of 100 ± 25 nm. Copper nanocubes were produced by using ascorbic acid as a reducing agent and poly(vinylpyrrolidone) (PVP) as a capping agent. X-ray diffraction (XRD), UV–vis spectroscopy (…
The hydrothermal synthesis of the purely inorganic open-framework indium selenide (NH(4))(4)In(12)Se(20) (1) is reported. Compound 1 exhibits a unique three-dimensional open-framework structure. The framework of 1 shows an unusual, for a chalcogenide compound, rigidity arising from the unprecedented connection mode of…
Nature routinely uses cooperative interactions to regulate cellular activity. For years, chemists have designed synthetic systems that aim toward harnessing the reactivity common to natural biological systems. By learning how to control these interactions in situ, one begins to allow for the preparation of man-made bi…
A new magnetic transition in the ruthenocuprate parent compound RuSr2EuCeCu2O10 has been observed below 10 K. It shows up only as a kink in the imaginary part of the ac susceptibility and exhibits a pronounced frequency dependence. At the same time, the real part of the ac susceptibility and the dc magnetization study…
Raman active phonons in the type-I clathrate compounds of ${X}_{8}{\mathrm{Ga}}_{16}{\mathrm{Ge}}_{30}$ $(X=\mathrm{Eu},\mathrm{Sr},\mathrm{Ba})$ have been fully assigned by the combination of polarized Raman scattering and first principles calculations. The dynamical motions of guest ions in the $6d$-site cage have b…