Materials Literature
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Diaminopyridine (DAP) functionalized POSS derivatives self-assemble on thymine functionalized monolayers on gold surfaces affording hybrid inorganic/organic surfaces.
Etch pits on highly oriented pyrolytic graphite (HOPG) were used as templates for the formation of gold nanostructures, which were characterized using STM (scanning tunneling microscopy), AFM (atomic force microscopy), XPS (X-ray photoelectron spectroscopy) and TOF-SIMS (time-of-flight secondary ion mass spectrometry)…
Silver−vanadium pentoxide composite films have been fabricated by 355-nm pulsed laser reactive deposition on stainless steel substrates. XRD and SEM analyses showed that the composite films Ag x V 2 O 5 ( x = 0.1−0.5) deposited at a substrate temperature of 300 °C in the presence of ambient 100 mTorr O 2 for 0.5 h wer…
The preparation, X-ray crystal structures, and magnetic properties of two new isostructural charge transfer salts, (BDH-TTP)M(isoq)(2)(NCS)(4) (M = Cr(III) (1), Fe(III) (2), BDH-TTP = 2,5-bis(1,3-dithiolan-2-ylidene)-1,3,4,6-tetrathiapentalene, isoq = isoquinoline), are reported. Crystal data for 1: monoclinic, space…
The Japanese ceramic gas turbine (CGT) research and development program (FY1988-1998) as a part of the New Sunshine Project funded by the Ministry of International Trade and Industry (MITI) was completed in March 1999. Kawasaki Heavy Industries, Ltd. (KHI) participated in this research program from the beginning and d…
Abstract Magnesium hydroxide‐based halogen‐free flame retarded linear low density polyethylene composites containing poly(ethylene‐ co ‐propylene) elastomer were prepared in the melt process and subsequently vulcanized thermally. Influences of the elastomer on the mechanical properties, combustion characteristics and…
Abstract Oxide formation on magnetron‐sputtered thin copper films (35 nm thickness) was studied by x‐ray reflectometry and grazing incidence x‐ray diffraction. The films were oxidized in air at temperatures of 175° C, 200° C, 225° C and 250° C. The reflectometry and the diffractometry data indicate the formation of Cu…
Morphological characteristics and mechanical properties of a series of block-double-graft (BDG) copolymers and terpolymers polystyrene−[1,2-polybutadiene- g -X 2 ] (X = 1,4-polybutadiene, polyisoprene, polystyrene, and polystyrene- b -polyisoprene diblocks) were investigated by transmission electron microscopy (TEM),…
Abstract In this paper, several drug carriers were fabricated to release the hydrophilic 5‐fluorouracil (5‐Fu), such as blend of polylactide (PLA) with different molecular weights and blends of PLA with polycaprolactone (PCL) or poly(ethylene glycol) (PEG). The controlled release devices were processed into tablets co…
General Electric has developed SiC fiber-reinforced SiC-Si matrix composites produced by silicon melt infiltration for use in gas turbine engine applications. High temperature, high-pressure combustion rig testing, and engine testing has been performed on combustor liners and turbine shrouds made from such MI composit…
The environments for oxygen sites in crystalline V(2)O(5) and in layered vanadia gels produced via sol-gel synthesis have been investigated using (17)O MAS and 3QMAS NMR. For crystalline V(2)O(5), three structural oxygen sites were observed: V=O (vanadyl), V(2)O (doubly coordinated), and V(3)O (triply coordinated). Li…
Abstract In an earlier publication we showed that the optical haze properties of blown and cast polyethylene (PE) films were adversely affected (i.e., haze increased) as a result of enhanced surface roughness caused by the formation of distinct optically anisotropic “spherulitic‐like” superstructures. In this report w…
Differential absorption spectroscopy shows a characteristic dependence on the density of 1s excitons in ${\mathrm{Cu}}_{2}\mathrm{O}$ at low temperature. The relation between absorption change and 1s exciton density is established and calibrated using one- and two-photon excitation. The calibrated density evaluation i…
We present exact diagonalization results on a modified Peierls-Hubbard model for the neutral-ionic phase transition. The ground state potential energy surface and the infrared intensity of the Peierls mode point to a strong, nonlinear electron-phonon coupling, with effects that are dominated by the proximity to the el…
The emergence of fuel cell systems and hybrid fuel cell systems requires the evolution of analysis strategies for evaluating thermodynamic performance and directing design and development. A description and application of the recently developed tool for analyzing tubular SOFC based systems is presented. The capabiliti…
Tetralkylammonium and sodium decatungstates have been heterogenized on silica. The so-obtained materials have been characterized by UV−vis and Fourier transform infrared spectroscopies, N 2 adsorption experiments, and measurements of surface polarity. Both the anion W 10 O 32 4- and the countercations are anchored on…
The LaFe 11.5 Si 1.5 H 1.3 interstitial compound has been prepared. Its Curie temperature T C (288 K) has been adjusted to around room temperature and the maximal magnetic entropy change (|Δ S |~17.0 J·kg -1 ·K -1 at T C ) is larger than that of Gd (|Δ S |~9.8 J·kg -1 ·K -1 at T C =293 K) by ~73.5% under a magnetic ch…
Abstract The effect of energy of corona discharge treatment (CDT) on the physico‐chemistry of the surface of a polyester film was investigated systematically using a number of complementary surface analytical techniques: contact angle analysis, x‐ray photoelectron spectroscopy, time‐of‐flight secondary ion mass spectr…
The Me3SiX-induced Mukaiyama aldol reaction proceeds through each catalytic cycle under the influence of X-: the silyl group of Me3SiNTf2 does not release from -NTf2 and that of silyl enol ether intermolecularly transfers to the product, while the silyl group of Me3SiOTf remains in the product and that of the silyl en…
Abstract The accumulation of adventitious carbon on Al and Au–Al alloy surfaces has been studied using XPS across a wide range of water vapour and air exposures. Carbon growth undergoes several discrete changes with the increase of exposure dose. X‐ray irradiation effects on carbon growth were also investigated. Under…