Materials Literature
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A study on the direct gas phase oxidation of benzene to phenol over a Pt-VO x /SiO 2 catalyst was carried out in both a conventional fluidized bed reactor (FBR) and a two-zone fluidized bed reactor (TZFBR). For this purpose, Pt-VO x /SiO 2 catalyst was synthesized by a method based on two consecutive impregnations. In…
Spiders spin a variety of task-specific silk fibers, each composed of one or more unique proteins synthesized within specialized glands in the spider's abdomen. Tubuliform glands are the source of the large diameter silk fibers used by many species in the construction of egg cases. Unlike other silk glands that synthe…
Carbon nanotubes (CNTs) have many potential applications due to their unique structural, physical and electronic properties. Arc-discharge in liquid method is developed to synthesize many kinds of nanocarbon structures. This technique is considered a low-cost method. Here, a full-automatic arc-discharge set-up was use…
Redox-Induced Reversible Conformational Switching of Poly(aniline sulfonic acid) with Transition Metals in Aqueous Solution
We report a new patterning method for single-walled carbon nanotubes (SWCNTs) films on flexible, transparent poly(ethylene terephthalate) using electrochemical etching in an aqueous electrolyte solution. Electrochemical etching of the SWCNT films patterned with photoresist polymer was accomplished in a three-electrode…
Due to their robust structure, low and constant starting current, constant torque, and smooth and noiseless operation, small- and medium-sized power rating hysteresis motors are commonly employed in high-speed applications. However, hysteresis motors, in general, have a comparatively low power factor, efficiency, and…
Poly( N -methylaniline)/Zn 0.6 Mn 0.2 Ni 0.2 Fe 2 O 4 (PNMAn/ZMNFO) composites were prepared by in situ polymerization. The structure, morphology, and electromagnetic properties of the samples were characterized by X-ray diffractometer, thermal analyzer, infrared spectrometer, scanning electron microscopy and transmis…
The atomic and electronic structures of the (010) surface of the $\mathrm{T}{\text{-Al}}_{3}$(Mn,Pd) complex metallic alloy is investigated by means of low-energy electron diffraction (LEED), scanning tunneling microscopy (STM), x-ray and ultraviolet photoelectron spectroscopy (XPS and UPS), x-ray photoelectron diffra…
Local lattice and electronic structures in the Fe-As layer of ${\text{SmFeAsO}}_{1\ensuremath{-}x}{\text{F}}_{x}$ superconductors were studied by x-ray absorption spectroscopy, the $\text{Fe}\text{ }K$-edge and the $\text{As}\text{ }K$-edge extended x-ray absorption fine-structure, and x-ray absorption near-edge-struc…
A rapid and simple approach to fabricate a large area of nanostructured substrate for surface-enhanced Raman scattering (SERS) is reported. Gold nanoparticles ranging from 10 to 40 nm in diameter uniformly distributed on a silicon substrate were obtained by annealing the gold film precoated on the silicon substrate wi…
All conventional viewing angle switchable liquid crystal displays with pixel division have drawback in light efficiency because the sub-pixel that controls viewing angle does not transmit the incident light at normal direction. In this paper, we propose new viewing angle controllable homogeneously aligned liquid cryst…
Alternating meta - and para -phenylene-linked oligoarylamines are considered as promising molecular parts for the molecule-based electronics and/or spintronics due to their intriguing electronic and magnetic properties. From the magnetic viewpoint, a -meta -phenylene linker plays a crucial role in ensuring the effecti…
The phase morphology, dynamic mechanical, thermal, and crystallization behaviors of poly(trimethylene terephthalate) (PTT)/polycarbonate (PC) blends were studied. The phase morphology of the blends, investigated as a function of the composition, indicated a two-phase structure. Dynamic mechanical thermal analysis (DMT…
We report steady state and dynamic properties of (multi)excitons in InAs quantum dots using femtosecond time-resolved transient absorption and time-resolved terahertz spectroscopy. The polarizability of confined excitons in the ground state is found to be of the order of 10 4 Å 3, increasing sharply with quantum dot r…
Methods to efficiently determine the phase behavior of novel proteins have the potential to significantly benefit structural biology efforts. Here, we present protocols to determine both the solubility boundary and the supersolubility boundary for protein/precipitant systems using an evaporation-based crystallization…
Lipid vesicles spontaneously fuse and assemble into a lipid bilayer on planar or spherical silica surfaces and other substrates. The supported lipid bilayers (SLBs) maintain characteristics of biological membranes, and are thus considered to be biomembrane mimetic systems that are stable because of the underlying subs…
During the operation of solid oxide fuel cells (SOFCs) the Ni base anode and/or Ni-mesh is in direct contact with the ferritic steel interconnect or the metallic substrate. For assuring long-term stack operation a diffusion barrier layer with high electronic conductivity may be needed to impede interdiffusion between…
We develop a lattice model for the splay flexoelectric effect in nematic liquid crystals. In this model, each lattice site has a spin representing the local molecular orientation, and the interaction between neighboring spins represents pear-shaped molecules with shape polarity. We perform Monte Carlo simulations and…
Properties of the dynamical-mode-locking phenomena are studied in the ac driven overdamped Frenkel-Kontorova model with deformable substrate potential. Appearance of very large subharmonic steps due to deformation of the substrate potential significantly influences the stability and existence of harmonic steps. Strong…
Abstract A 2D isothermal finite element simulation of the injection stretch‐blow molding (ISBM) process for polyethylene terephthalate (PET) containers has been developed through the commercial finite element package ABAQUS/standard. In this work, the blowing air to inflate the PET preform was modeled through two diff…