Materials Literature
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Abstract Combinatorial methods and informatics are applied to the study of complex property‐structure‐processing relationships during interpenetrating polymer network formation in an epoxy/acrylate system. Principal component analysis of a dataset that covers different compositions and process sequences successfully i…
Co Fe 2 O 4 films with different thicknesses (40–200nm) were prepared on sapphire using pulsed laser deposition at different substrate temperatures. The films on (0001) sapphire showed a (111) epitaxial structure even at a low deposition temperature of 150°C. The coercivity up to 8.8kOe could be achieved in the 40nm f…
Abstract Nanopore covered microporous porous silicon (PS) interfaces have been formed to provide an active scaffolding for the creation of sensor and microreactor configurations. Rapidly responding (≤2s), reversible, and sensitive (≤2 ppm), PS gas sensors, operating at room temperature, and based on a uniquely formed…
<div class="htmlview paragraph">Direct catalytic soot oxidation is expected to become an important component of future diesel particulate emission control systems. The development of advanced Catalytic Diesel Particulate Filters (CDPFs relies on the interplay of chemistry and geometry in order to enhance soot-ca…
The experimental total energy distribution (TED) of the field emitted electrons from a single pod of a ZnO tetrapod has been obtained, exhibiting a two-peak feature. The energy difference between the two peaks in the TED is found to be nearly equal to the band gap of the bulk ZnO. The results show that field emitted e…
<div class="htmlview paragraph">This paper presents the development of an analytical model that complements laboratory based experiments to provide a tool for Selective Catalyst Reduction (SCR) applications. The model calibration is based on measured data from <i>NOx</i> reduction performance tests a…
Abstract This paper reports on silicon nanowires (SiNWs) growth on porous silicon (PS) template using vapor‐liquid‐solid (VLS) technique and the effect of high‐pressure water vapor annealing (HWA) on their optical properties. Gold nanoparticles (Au NPs) with average mean diameter of 50 and 20 nm were used as catalysts…
The usefulness of the ballistic emitter in liquid has been studied for nanocrystalline silicon (nc-Si) diode. Here the authors show that the nc-Si ballistic emitter operates well in liquid water, and that hydrogen gas is produced from the device surface only by electron incidence into water without using any counterel…
Abstract The phosphinoyl‐substituted macrocyclic receptor B 8 bL 8 , derived from p ‐ tert ‐butylcalix[8]arene, was synthesized and its structure was studied in solution. According to temperature‐dependent 1 H and 31 P NMR spectroscopic data, the calix[8]arene adopts a so‐called in – out cone conformation. To investig…
The authors realize three photodiodes based on organic materials, which have photoresponse curves matched to the colorimetric functions of the standard observer. Such a system of detectors is used for realizing a three-stimuli colorimeter. They report the result of measurements in different spectral areas and suggest…
The authors observe an electric-field-induced structural transition in the B1 columnar liquid crystalline phase at surprisingly low field strengths in a bent-core liquid crystal material with asymmetric alkyl chains. A possible B1 to B2 transition at applied electric fields of 10V∕μm is observed. After this E-field-in…
Abstract Porous silicon (PS) is doped with rare earth (RE) ions (Er, Eu, Tb) by electrochemical anodisation. The penetration of RE into the PS layer is confirmed by Rutherford Backscattering Spectroscopy (RBS) and by Energy Dispersive X‐ray (EDX) measurements. Efficient visible and infrared emissions were observed at…
<div class="htmlview paragraph">An external injection system was introduced to control the lean Nox trap(LNT). LNT absorbs Nox in lean condition of exhaust gas and discharges N2 by reducing Nox in rich condition. To make exhaust gas lean or rich, fuel injection into the exhaust gas is used with the engine contro…
<div class="htmlview paragraph">The automotive industry is pursuing significant cost competitive efforts to reduce vehicle weight while maintaining or improving durability and impact performance. One such effort for the body shell structure is the utilization of advanced and ultra high strength steels (AHSS and…
Ferroelectric domain evolution in poled (111)-cut (Pb(Mg1∕3Nb2∕3)O3)0.7(PbTiO3)0.3 single crystal has been studied by means of piezoresponse force microscopy (PFM). A time-dependent development of lamellar ferroelectric domains from a single domain structure of the just-poled sample has been observed, and it reveals t…
A simple method is described for controlling the surface chemical composition and topography of the diblock copolymer poly(styrene)-b-poly(dimethylsiloxane)(PS-b-PDMS) by casting the copolymer solutions from solvents with different selectivities. The surface morphology and chemical composition were characterized by sc…
Abstract Monodisperse, micrometer‐sized polymer beads can be imparted with a porous nanostructure by softening them into a porous silicon photonic crystal template. Infiltration of the polymer and replication of the photonic spectral properties is verified by optical reflectivity measurements of the beads as they infu…
We report room-temperature ferromagnetism in nickel doped ceria (Ce1−xNixO2) powders prepared using the sol-gel process. Magnetometry studies on as-prepared samples reveal a weak ferromagnetic (FM) behavior in the range 0&lt;x&lt;0.04 (8.6×10−4μB∕Ni ion for 4%). For x&gt;0.04, the FM magnetization steadily…
The authors demonstrate how a nonsolvent fluid, flowing over the surface of a block copolymer thin film in a complex path defined by a channel, can locally tailor the alignment of cylindrical microdomains. The cylinders have a periodicity of ∼30nm, while the mesoscale pattern has a millimeter length scale. A diverging…
The authors report room temperature ferromagnetism in La0.5Sr0.5Ti0.985Co0.015O3−δ nanoparticles with particle sizes of ∼12–14nm. Nanoparticles of undoped and Co-doped samples were synthesized by a polymerized complex method and were characterized using x-ray diffraction and transmission electron microscopy. The magne…