Materials Literature
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The electron field emission properties of the nanodiamond films were examined using scanning tunneling microscopic (STM) technique. Current image tunneling spectroscopic measurements reveal the direct dependence of electron tunneling/field emission behavior of the films on the proportion of grain boundaries present. L…
The phenomenon of photon tunneling, which depends on evanescent waves for radiative transfer, has important applications in microscale energy conversion devices and near-field optical microscopy. In recent years, there has been a surge of interest in the so-called negative index materials (NIMs), which have simultaneo…
The indium(III)-substituted polyanions [In 3 Cl 2 ( B-α- PW 9 O 34 ) 2 ] 11– ( 1 ), [In 3 Cl 2 (P 2 W 15 O 56 ) 2 ] 17– ( 2 ), [In 4 (H 2 O) 10 ( β- AsW 9 O 32 OH) 2 ] 4– ( 3 ) and [In 4 (H 2 O) 10 ( β- SbW 9 O 33 ) 2 ] 6– ( 4 ) have been synthesized and characterized in the solid state by IR and elemental analysis an…
Abstract Self-assembly of dendrons allows a new approach for size control of bimetallic Pd–Pt nanoparticles, which affords reusable dendritic nanoreactors for selective hydrogenation of dienes and alkynes to monoenes in thermomorphic systems.
The experimental results of the susceptibility, specific heat, magnetization, and electron spin resonance of $\mathrm{Cu}{({\mathrm{H}}_{2}\mathrm{O})}_{2}({\mathrm{C}}_{2}{\mathrm{H}}_{8}{\mathrm{N}}_{2})\mathrm{S}{\mathrm{O}}_{4}$ are reported. Despite the triangular arrangement of chemical bonds, the system is iden…
An S-bridged RhIII2PtII2 tetranuclear complex having two nonbridging thiolato groups, [{Pt(NH3)2}2{Rh(aet)3}2]4+ ([1]4+), in which two fac(S)-[Rh(aet)3] units are linked by two trans-[Pt(NH3)2]2+ moieties, was synthesized by the 1:1 reaction of fac(S)-[Rh(aet)3] (aet = 2-aminoethanethiolate) with trans-[PtCl2(NH3)2] i…
Polymers such as poly(ethylene glycol) (PEG) have proven use in a variety of applications including organic synthesis. We now disclose our investigations into the recently disputed report that PEG tartrate esters can reverse the enantioselectivity of the Sharpless asymmetric epoxidation reaction. The results presented…
CO adsorption on four MoSx (stoichiometric and nonstoichiometric) clusters has been investigated by using density functional method. It is found that CO prefers adsorption on the coordinatively unsaturated (1010) surface. The adsorption energy of high coverage shows the additivity as compared with that of one CO adsor…
A quantitative structure-enantioselectivity relationship was established for a combinatorial library of enantioselective reactions performed by addition of diethyl zinc to benzaldehyde. Chiral catalysts and additives were encoded by their chirality codes and presented as input to neural networks. The networks were tra…
A novel stable organic radical, 7,7-diphenyl-6,7-dihydro[1,2,5]thiadiazolo[3,4- f ]quinoline-6-oxyl ( 1 ), forms a one-dimensional columnar structure consisting of slipped π-stacks, which is in contrast to dimer formation of the isoelectronic benzologue, 3,3-diphenyl-3,4-dihydrobenzo[ f ]quinoline-4-oxyl ( 2 ). Magnet…
The "carpet"/brush double layer structure in the polyelectrolyte layer in the amphiphilic diblock copolymer monolayer at the air-water interface was quantitatively studied by in situ neutron reflectometry in addition to X-ray reflectivity measurements. As a result of the higher contrast between polyelectrolyte [poly(m…
Abstract Polycrystalline Eu 2 Mo 3 O 12 has been synthesized and characterized by X‐ray and electron diffraction, high resolution electron microscopy and magnetic measurements. This oxide shows a complex scheelite superstructure whose essential feature is the existence of isolated Mo tetrahedra. Each Mo atom has four…
Elementary Pt∕SrBi2Ta2O9∕Pt ferroelectric capacitors have been structurally characterized by x-ray diffraction using highly brilliant synchrotron radiation. A microstructural analysis of the stacked layers was performed from the collection of high-quality one-dimensional and two-dimensional diffraction patterns. Durin…
High-resolution X-ray diffraction and polarized neutron diffraction experiments have been performed on the Y-semiquinonate complex, Y(HBPz3)2(DTBSQ), in order to determine the charge and spin densities in the paramagnetic ground state, S = (1/2). The aim of these combined studies is to bring new insights to the antife…
Purpose This paper reports on the development of a method for the prediction of clothing pressure of girdles on the human body. Design/methodology/approach In this paper, we propose to use a standard mannequin dummy to measure the clothing pressure of girdles and from which to predict the pressure on the different hum…
A selected series of mono- and multi- V-substituted derivatives of Dawson type structure were synthesized and characterized with the aim of exploring their electrochemistry and their electrocatalytic abilities. The focus was placed on the electrochemistry of [P 2 V 2 W 16 O 62 ] 8- as a representative example. The red…
Here, we report a novel route to prepare bioreactive surfaces on gold by the self-assembly of generation-three hydroxyl-terminated dendron thiols (G3-OH) and subsequent bridging reactions using generation-two amine-terminated dendrimers (G2-NH(2)). It has been shown that G3-OH dendron thiols form a stable and uniform…
The interface of ARMCO iron during electrochemical machining (ECM) was investigated by microelectrochemical techniques. The results lead to a duplex layer structure model, a solid oxide film, and a supersaturated viscous layer. The consequences on pulsed ECM, especially on the important parameters such as pulse/pause…
We synthesized hexagonal $\mathrm{Y}\mathrm{Mn}{\mathrm{O}}_{3}$ doped with Ti ions and investigated the crystal structure by means of transmission electron microscopy. Superlattice reflection spots with a modulation wave vector $q=\frac{1}{3}{c}^{*}$ appeared for the Ti-doped $\mathrm{Y}\mathrm{Mn}{\mathrm{O}}_{3}$.…
We report postgrowth micro-Raman stress imaging of cracks in (111) homoepitaxial diamond films. Undoped and phosphorous-doped diamond thin films grown by microwave plasma-enhanced chemical-vapor deposition on Ib (111)-oriented diamond substrates have been studied by confocal micro-Raman spectroscopy. For comparison pu…