Materials Literature
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<div class="htmlview paragraph">Development of the ultra thin wall ceramic catalytic substrate is necessary to meet increasingly strict emissions regulations. The cell walls need to be thinner in order to improve the warm-up characteristics related to the reduction of emissions and to lower the back pressure. Ho…
Hexadentate cyclen complexes of Sm(III), Eu(III) and Yb(III) have been prepared from 1,4-bis[(R)-α-methylbenzylaminocarbonylmethyl]-1,4,7,10-tetraazacycldodecane and characterised. The crystal structures of the isomorphous complexes of Eu(III) and Sm (III) have been determined. These may be electrochemically reduced t…
<div class="htmlview paragraph">Bare magnesium is not compatible with the zinc phosphate process commonly used in automotive manufacturing today. If a magnesium component is assembled onto the vehicle prior to the phosphate process, it must be coated beforehand to prevent magnesium dissolution in the phosphate b…
<div class="htmlview paragraph">To establish performance trends in ultra thin wall substrates and help support their selection criteria for designing catalytic converter systems, the light-off behavior of five Ultra Thin Wall ceramic substrates and two catalysts on an engine dynamometer are hereby examined. Mode…
<div class="htmlview paragraph">This paper summarizes results from a large study on the desulfation characteristics of lean NO<sub>x</sub> traps. Degreened and thermally aged NO<sub>x</sub> trap formulations were poisoned with SO<sub>2</sub> multiple times in a flow reactor. T…
We have grown Er,O-codoped InGaAs/GaAs multiple-quantum-well (MQW:Er,O) structures by low-pressure organometallic vapor phase epitaxy (OMVPE), and investigated their luminescence properties. The MQW structures are designed to emit light at 0.98 μm for direct excitation of Er ions. Degradation of the structures due to…
Using a scanning microwave microscope, we investigated the local electrical properties of epitaxial CaRuO3 thin films. The films showed a metal–insulator transition depending on the growth temperature and their thickness. We observed spatially separated highly conducting and poorly conducting regions in the films grow…
3D ordered macroporous multicomponent composite materials have been fabricated by electrochemical deposition of aniline on the inner surface of macroporous carbon; the maximum thickness of polyaniline (PANI) deposited is dependent on the concentration of the aniline as well as the dimension of the windows in the macro…
A co-occurrence of magnetic and structural transitions was observed in a nonstoichiometric Ni53Mn25Ga22 alloy which undergoes a reverse martensitic transformation from ferromagnetic martensite to paramagnetic austenite at a magnetic transition temperature (134 °C) higher than the Curie temperature of the stoichiometri…
<div class="htmlview paragraph">Delphi Automotive Systems and BMW are jointly developing Solid Oxide Fuel Cell (SOFC) technology for application in the transportation industry primarily as an on-board Auxiliary Power Unit (APU). In the first application of this joint program, the APU will be used to power an ele…
La 0.5 Ba 0.5 MnO 3 nanowires were synthesized by a hydrothermal method at low reaction temperature (270 °C). The synthesized nanowires are of pure, cubic perovskite structure and single crystalline. They grow along [110]; their surfaces are clean, very regular, and without any sheathed amorphous phase. Typical length…
Tridirectional conductivity in a polymeric material has been achieved. Nanoscale “wires” formed via hierarchical self-organization of a basic block copolymer and a monomeric acid/alkylphenol complex establish a lamellar-within-lamellar superstructure (see Figure), resulting in a soft material with tunable conductivity…
Abstract A series of shape memory polyurethanes (SPU) with different component ratio of PEG, MDI, BDO, and crosslinker DEA were synthesized by stepwise polymerization in DMF. WAXD, SAXS, DMTA, and DTA were used to study the microphase structure of SPU. No obvious phase‐separation and crystalline evidence of the PEG so…
<div class="htmlview paragraph">The pressure drop behavior of catalytic converters has been investigated for a number of different substrates, suitable for high performance IC-engines, regarding cell density, wall thickness and coating.</div> <div class="htmlview paragraph">The measurements have been…
<div class="htmlview paragraph">The ultimate goal in the numerical simulation of automotive catalytic converters is the prediction of exhaust gas emissions as function of time for varying inlet conditions, i.e. the simulation of a driving cycle. Such a simulation must include the calculation of the transient thr…
We present a comprehensive analysis of the Dzyaloshinsky-Moriya interaction and crystal-field parameters using the angular dependence of the paramagnetic-resonance shift and linewidth in single crystals of ${\mathrm{La}}_{0.95}{\mathrm{Sr}}_{0.05}{\mathrm{MnO}}_{3}$ within the orthorhombic Jahn-Teller distorted phase.…
Fluorenic core oligomers, displaying interesting photoluminescence properties, have been synthesized by an organometallic route. The crystal and molecular structure of a fluorene derivative and three homologous oligomers have been studied. The spiro-derivative of dibromofluorene shows a very strong interaction between…
<div class="htmlview paragraph">DPFs (Diesel Particulate Filters) have been a primary technology utilized to purify diesel PM emissions. One of the major challenges of the DPF is to reduce pressure drop caused by PM and ash accumulation.</div> <div class="htmlview paragraph">This paper reports on the…
Pairing symmetry in $\ensuremath{\kappa}\ensuremath{-}(\mathrm{BEDT}\ensuremath{-}\mathrm{TTF}{)}_{2}X$ is reexamined by applying the fluctuation exchange method to the Hubbard model on the original four-band lattice. Our study is motivated by the discrepancy between recent thermal conductivity/tunneling spectroscopy…
<div class="htmlview paragraph">A new after-treatment system called DPNR (Diesel Particulate-NOx Reduction System) has been developed for simultaneous and continuous reduction of particulate matter (PM) and nitrogen oxides (NOx) in diesel exhaust gas. This system consists of both a new catalytic technology and a…