Materials Literature
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We have synthesized an original layered rhodium oxide in the Bi-Sr-Rh-O system with alternately stacked conductive $\mathrm{Rh}{\mathrm{O}}_{x}$ layer and insulating $({\mathrm{Bi}}_{0.75}{\mathrm{Sr}}_{0.25}){\mathrm{O}}_{1.5}$ fluorite-type layers. Thermopower, resistivity, Hall coefficient, magnetoresistance, and m…
Abstract Apart from a few examples, β‐(poly)fluorinated and β‐(poly)perfluoroalkylated porphyrins were practically unknownuntil recently. In particular, β‐octafluoro‐ meso ‐tetraarylporphyrins remained elusive ligands owing to the lack of any convenient access. The aim of this microreview is to highlight recent progre…
We examine a simple hard disk fluid with no long range interactions on the two-dimensional space of constant negative Gaussian curvature, the hyperbolic plane. This geometry provides a natural mechanism by which global crystalline order is frustrated, allowing us to construct a tractable model of disordered monodisper…
A high optical efficiency and wide-view transflective liquid crystal display based on fringe-field switching structure is proposed. The transmissive part has a homogenous liquid crystal (LC) alignment and is driven by a fringe electric field, which exhibits excellent electro-optic characteristics. The reflective part…
Interaction of static electric fields with a nematic is complicated because of the presence of charges, which originates from aligning layers or from molecular breakdown, affecting the electro-optic response of a liquid crystal cell. We analyze the aligning layers effect on the electro-optical response and develop a m…
Relaxation of strain by a partial dislocation and stacking fault in a strained Si film was characterized using geometric phase analysis of high-resolution transmission electron microscope (HRTEM) images. Movement of a 60° glide dislocation from the free surface to the film-substrate interface created a complex state o…
Abstract Blending polypropylene to recycled PA6 industrial wastes at different compositions, with and without compatibilizer PPgMA was produced in a corotating twin screw extruder where, polypropylene acts as the polymer matrix and polyamide as the dispersed phase. Several techniques were used to investigate the morph…
Theoretically, there are several methods that can be used to remove CO from H2-rich gases. As for the applications of PEM-FCs to vehicles, boats and yachts and residential co-generators, however, the feasible choice may be only between the preferential CO oxidation (CO-PROX) and the selective CO methanation (CO-SMET)…
RE Mn O 3 (RE=Dy,Gd,Sm) films were deposited on (110) surfaces of single crystalline hexagonal (h-)YMnO3. These films adopted the metastable multiferroic h-REMnO3 structure instead of the stable perovskite structure. Sharp (hh0) diffraction peaks with narrow rocking curves were found for all films. The peak widths inc…
Abstract Micrometer‐sized monodispersed mesoporous silica spheres with adjustable particle diameter and adjustable pore structure were successfully prepared. Drops of a silica sol were injected by a microfluidic device into a heated oil bath where the droplets solidified during sedimentation. Drop size was varied by c…
Abstract Plant‐derived kenaf fiber (KF)‐reinforced poly(ε‐caprolactone) (PCL) biocomposites were successfully fabricated by the melt mixing technique. The crystallization behavior, morphology, and mechanical and dynamic mechanical properties of PCL/KF composites with various KF weight contents were investigated. The c…
Abstract The objective is to characterize the effects of the bimodal distribution of rubber particles and its blend ratio on the mechanical properties of the thermoplastic polypropylene blended with two different styrene‐ethylene‐butadiene‐styrene triblock copolymer at the intermediate and high strain rates. Tensile t…
We employ density-functional theory within the generalized-gradient approximation to study the structural and electronic properties of Cu-doped GaN. We find that spin polarization on the Cu atoms in the GaN lattice is very small, leading to rather weak ferromagnetic behavior. We therefore suggest that Cu-doped GaN is…
Abstract Electrically conductive PP/EPDM dynamically crosslinked thermoplastic vulcanizate (TPV)/expanded graphite (EG) has been successfully prepared via melt compounding of maleic anhydride grafted polypropylene (PP‐ g ‐MA)/EG masterbatch and a commercially available TPV material. Correlation between graphite micros…
In this letter, the authors demonstrate photonic band gap (PBG) tuning in chiral nematic liquid crystals using electrically commanded surfaces consisting of a ferroelectric liquid crystal. The electrically commanded surfaces generate a contraction of the pitch of the chiral nematic which is manifested as a blueshift o…
Vertically aligned ZnO nanowire (NW) arrays have been synthesized selectively on patterned aluminum-doped zinc oxide (AZO) layer deposited on silicon substrates without using any metal catalysts. The growth region was defined by conventional photolithography with an insulating template. Careful control of the types of…
A surface was created with the same superhydrophobic property as the lotus leaf (lotus effect) by dipping of sandblasted porous alumina into polytetrafluoroethylene (PTFE, Teflon®: DuPont™) solution. The fabricated engineered lotus leaf had PTFE dual-scale structures. This fabrication process has several advantages, i…
Schaltfähig: Ein neuartiger Bipyridinligand mit Phenyl- und Dimethylaminophenyldithienylethen-Gruppen bildet photochrome dipolare Zink(II)-Komplexe, in denen erstmals ein effizientes photochemisches An- und Ausschalten der NLO-Eigenschaften eines Metallochromophors beobachtet wird.
Organoclay filled natural rubber (NR) nanocomposites were prepared by the incorporation of different loadings (0—10 phr) of organoclay fillers. NR nanocomposites were prepared using two different mixing methods, namely mechanical and solution mixing methods. Results indicate that the scorch time and cure time decrease…
Abstract A facile compounding process, which combined nanocomposite process with electrospinning for preparing novel polyamide6/organic modified montmorillonite (PA6/O‐MMT) composite nanofibers, is reported. In this compounding process, the O‐MMT slurry was blended into the formic acid solution of PA6 at moderate temp…