Materials Literature
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<div class="htmlview paragraph">Heating and cooling automotive seats are a relatively new technology that delivers conditioned air to the occupant's seat providing an overall improvement in occupant comfort. This paper combines experimental and computational data to describe the effect of seat cooling on occupan…
<div class="htmlview paragraph">This paper investigates the effect of specimen geometry and test boundary conditions on the measured dynamic mechanical properties of high strength sheet steel derived from high speed tensile testing at 15m/s, using a servo-hydraulic test machine. In this study, stochastic modelli…
Abstract It is a well-accepted practice to add production chemicals to a formation through a squeeze process. These are designed to place chemical in the near well area and treat the fluid for scale, paraffin, salt, etc. Now, frac-fluid approved chemicals are added to the fracture in order to place products deeper in…
<div class="htmlview paragraph">Diesel engine emissions regulations throughout the world have changed dramatically over the last 20 years, with the most stringent phase for medium/heavy duty being implemented starting 2007 - 2010. The general perception is, that combination systems including PM reduction devices…
<div class="htmlview paragraph">The removal of nitrogen oxides emitted by diesel and lean burn engines is one of the most important targets in catalytic exhaust aftertreatment research. Besides the selective catalytic reduction (SCR) reaction with ammonia the most promising approach is the NO<sub>x</sub…
Abstract A condensation reaction involving a free base tetraarylporphyrin‐2,3‐dione, a macrocyclic compound containing a 1,10‐phenanthroline‐5,6‐dione and a 1,2,4,5‐tetraminobenzene as a linker affords the corresponding conjugate in good yield. The porphyrin ring and the phenanthroline fragment of the other ring are c…
<div class="htmlview paragraph">Diamond-like carbon (DLC) films are of significant interest for the automobile field, because they possess the potential to improve friction properties under various sliding conditions. Among the various DLC films, the authors focus on silicon-containing DLC (DLC-Si) films, which…
Carbon Nanotube Field Effect Transistors (CNTFET) are promising nano-scaled devices for implementing high performance, very dense and low power circuits. The core of a CNTFET is a carbon nanotube. Its conductance property is determined by the so-called chirality of the tube; chirality is difficult to control during ma…
Based on ambient ultrasonic measurements and x-ray diffraction under hydrostatic compression, the authors report here a comparative study of elasticity on oxygen-deficient perovskite, BaCe1−xYxO3−0.5x, with x=0.00 and 0.15. The results show that the presence of 2.5% oxygen vacancy has no measurable effect on the elast…
Xylan films were prepared by casting from aqueous solution and their equilibrium moisture content, mechanical properties, morphology and oxygen permeability were measured. The films were transparent and homogeneous and the mechanical properties could be controlled by an addition of plasticizers such as xylitol and sor…
Abstract In this communication, the design and the fabrication of a silicon‐glass microsystem for lab‐on‐chip sensing applications have been reported. Each component has been realised using wet etch process and the porous silicon (PSi) technology, while the final device has been obtained intimately joining all element…
Exchange bias may be used to couple a normal ferromagnet to a ferroelectric antiferromagnet and thus create a multiferroic system with nonzero magnetization. In implementing this idea the authors developed a synthesis method for composite films of nanoscale clusters of ferromagnetic MnFe2O4 embedded in multiferroic Mn…
The main goal of this work is to generate a method to control the magnetic properties of magnetostrictive metals (anisotropy and coercive field) without affecting the total magnetostriction. Multilayers of amorphous (Fe80Co20)80B20 are sputtered changing alternatively the anisotropy direction of the successive layers.…
Abstract Deep straight macropores in n‐type Si have been completely filled with copper (Cu). Homogeneous metal deposition inside the deep pores was achieved by means of electroplating using a solution containing only CuSO 4 mixed with H 2 SO 4 and an optimized process that begins at the bottom of the pores. Pores as d…
The charge density distributions of layered oxysulfide (LaO)CuS, known as a p-type transparent semiconductor, have been investigated by analyzing the synchrotron radiation powder diffraction profile with the maximum entropy method/Rietveld method. The bonding character of the Cu–S bond is revealed to be covalent. Mean…
<div class="htmlview paragraph">This paper presents a study of urea SCR catalyst aging characteristics and implementation into an analytical model that complements laboratory based experiments for a dynamometer-aged SCR brick. The model calibration is based on measured data taken from a 120k-mile simulated dynam…
The authors have investigated the spin-dependent transport properties of GaMnAs-based “three-terminal” semiconductor spin hot-carrier transistor (SSHCT) structures. The emitter-base bias voltage VEB dependence of the collector current IC, emitter current IE, and base current IB shows that the current transfer ratio α…
Grain boundary motion during grain growth or recrystallization is considered as a diffusion process of atomic movement across the boundary. It can be accompanied by subgrain rotation or nanograin rotation. However, grain boundary migration can be achieved also by dislocation motion or creep. The evidence is the power…
<div class="htmlview paragraph">Catalyzed diesel particulate filter systems have now been successfully introduced and implemented in Europe. In the meantime, automotive manufacturers are working on the second generation of catalytic filters with the aim of reducing the overall system costs. In particular savings…
Abstract The formation process of ordered macropores in a prepatterned p‐type silicon wafer was investigated. FE‐SEM observation focusing on the early stage of the pore growth clarified the two‐step process of macropore formation, whose first step was isotropic pore expansion from prepared etch pits and the second was…