Materials Literature
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A new diblock copolymer-derived porous reaction layer for microelectrode arrays has been tested for its stability and its compatibility with both site-selective synthesis and electrochemical signaling experiments. The diblock copolymer consisted of a cinnamoyl-substituted polymethacrylate block for attachment to the s…
We present three new crystal structures of members from the photochromic spiropyran family, including a rare example of an open (merocyanine) form. The molecular structures are systematically compared with existing crystallographically relevant data, and a new avenue for stabilizing open spiropyran forms in the solid-…
Highly ordered BiFeO 3 (BFO) nanotubes with about 200 nm in diameter and 60 μm in length are fabricated by a sol-gel AAO template method. A perovskite-type structure of BFO is confirmed in the nanotubes by transmission electron microscopy and selected area electron diffraction analysis. The coexistence of ferroelectri…
Polycrystalline clathrate samples of nominal K(8)Ga(x)Sn(46-x) were prepared by the spark plasma sintering method to investigate their crystal structures, mobilities and thermoelectric properties. The samples almost had a single-phase type-I clathrate structure, and their relative densities reached as high as 98%. The…
The aim of this work is to give an estimate of the magnitude of the error caused by the neglect of the interference effect and inaccurate consideration of elastic scattering in the case of reflection electron energy loss spectra. Different theoretical approaches to describe electron energy loss processes, as well as t…
In this work, a combined process, called centrifugal gel casting (CGC), was proposed for the fabrication of homogenous and reliable monolithic and composite ceramics starting from submicrometer‐sized powders. This method exploits the advantages of both conventional gel casting (GC) and centrifugal slip casting (CSC),…
Abstract In this study, we have introduced electrospinning of a colloidal solution rather than the conventional sol–gel process as a novel strategy to produce silver nanofibres. Typically, a silver acetate/polyvinyl alcohol colloidal solution was successfully electrospun. Electrophoretic light scattering (ELS) and dyn…
Abstract A new stilbene‐tethered bis(porphyrin) tweezer 5 has been synthesized through a Sonogashira cross‐coupling reaction. The tweezer exists as two configurational isomers [(Z) + (E)], which have distinct cavity sizes. Fullerene‐binding studies show that the (Z) isomer of the tweezer has a significantly higher aff…
In this work, bulk Hf 3 AlN ceramic was synthesized by an in situ reaction/hot pressing method using Hf and AlN as initial materials. The reaction path during the synthesis process was investigated. Hf 3 AlN was found to form via the reaction of Hf and AlN above 1000°C. Furthermore, physical and mechanical properties…
We perform a first-principles study on the electronic structure and elastic properties of Ti3AlC with an antiperovskite structure. The absence of band gap at the Fermi level and the finite value of the density of states at the Fermi energy reveal the metallic behavior of this compound. The elastic constants of Ti3AlC…
Electro-optical and dielectric properties of a high tilt antiferroelectric liquid crystal mixture (W-193B), Nayek, Prasenjit, Ghosh, Sharmistha, Kundu, Sudarshan, Roy, Subir Kr, Majumder, Tapas Pal, Bennis, Noureddine, Otón, Jose Manuel, Dabrowski, Roman
The biophysical and biochemical properties of RADA16-I, the representative of a class of self-assembling peptides, were studied to elucidate the molecular mechanism of nanofiber and hydrogel formations. We found that self-assembly occurs in the solution at low pH (pH 4), rather than the popular belief that it occurs i…
Molecular dynamics computer simulations were used to study the fracture behavior of silica, multicomponent silicate, and oxynitride intergranular films (IGFs) between silicon nitride crystals as a function of composition, film thickness, and crystallographic orientation. The maximum fracture strength is higher in the…
High-quality Ga-doped ZnO (ZnO:Ga) single crystalline films with various Ga concentrations are grown on a-plane sapphire substrates using molecular-beam epitaxy. The site configuration of doped Ga atoms is studied by means of x-ray absorption spectroscopy. It is found that nearly all Ga can substitute into ZnO lattice…
An emerging nanofabrication technology is to synthesize nanoscale inorganic materials with narrow size distribution using biological systems, which are size-constrained, fairly robust, and easily removable. Apoferritin, a spherical and hollow protein complex, was subjected to atomic layer deposition of TiO(2). The gro…
To put a cap on it: Intelligent caps have been added onto mesoporous walls toward innovative low-dielectric materials. Appropriately sized caps at the mesopore entrance is quite effective, which can prevent the penetration of the polymer during the mechanical composite processing and can also provide enough space for…
The hybrid fish Pseudoplatystoma spp. has been raised on a large scale by several fish farmers, despite the fact that little is known about its biology. This is because it presents a number of zootechnical advantages over the parental species. In order to provide information about the early morphology of this importan…
The geometrical structures, relative stabilities, electronic, and magnetic properties of zinc-doped gold cluster anions Au(n)Zn(-) (2 < or = n < or = 10) have been systematically investigated by means of first-principles density functional calculations at the B3LYP level. The results show that the most stable isomers…
Carbon nanotube (CNT) ferroelectric field-effect transistors (FeFETs) with well-defined memory switch behaviors are promising for nonvolatile, nondestructive read-out (NDRO) memory operation and ultralow power consumption. Here, we report two-bit CNT-FeFET memories by assembling two top gates on individual nanotubes c…
A frame-store pn-junction CCD detector was applied to the energy-dispersive X-ray Laue diffraction study of a γ-LiAlO2crystal with white synchrotron radiation. Exploiting the simultaneous spatial and energy resolution of the detector the crystallographic unit cell of γ-LiAlO2could be determined without anya prioriinfo…