Materials Literature
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We report on the in situ detection of cytochrome c adsorption onto individual SWNT transistors via the changes in the electron transport properties of the transistors.
Ultralong and straight single-crystalline ZnO nanowires with diameters of 80–100 nm and lengths of over 10 µm (aspect ratios ∼100∶1) have been successfully synthesized by a simple hydrothermal treatment of the zinc carbonate hydroxide hydrate (Zn4CO3(OH)6·H2O) obtained via a precipitation reaction between the solution…
In most planar solid oxide fuel cell (SOFC) stack designs, the interconnect, which is typically made from a ferritic stainless steel (SS), is hermetically sealed to the ceramic positive electrode-electrolyte-negative electrode by a sealing glass. To maintain the structural stability and minimize degradation of the sta…
Nanostructured composite materials of polyaniline (PANI) with gold clusters of different sizes and amounts have been produced. PANI films of the same thickness were grown electrochemically on platinum substrates. Then nucleation of gold clusters in the PANI film was initiated by chemical reduction of tetrabromoaurate…
A synthetic method has been developed that can control both multifunctionalization and morphology of the mesoporous organic-inorganic hybrid materials by introducing different molar ratios of organoalkoxysilane precursors to a base-catalyzed co-condensation of silicate.
Nanoparticles of ZnO were prepared by the reaction of ethanolic solutions of zinc acetate and oxalic acid followed by drying (80 °C) and calcination (500 °C). Subsequently varistor materials were fabricated from this nanoparticular ZnO via two separate routes:- a) from a “core shell” material using metal salts as addi…
An increment borer is the primary tool used to collect samples for dendrochronological analyses. These are precision instruments and users should be trained in their proper use, care, and maintenance. In this paper, I describe the various parts of an increment borer and how to keep these in working condition. I provid…
Several La1 − xGdxPO4 solid solutions were prepared in the monazite- or rhabdophane-type structures for various x values using three methods of preparation (direct evaporation, synthesis in closed PTFE containers on a sand bath or in autoclaves). Samples of rhabdophane-type La1 − xGdxPO4·nH2O (n ≈ 0.5) were prepared a…
Impurity diffusion in α-Ti and α-Zr is characterized by fast interstitial diffusion of small atoms and slow substitutional diffusion of large atoms. The mechanism of the fast diffusion is discussed on the basis of the several features: the effect of α-β phase transformation, the diffusion anisotropy, the atomic size e…
Experiments performed on different powders of different size distributions tribocharged with stainless-steel (SS) beads showed the charge acquired by the powder could be correlated with the actual work function difference between the powder and SS. Ultraviolet and X-ray photoelectron spectroscopy were performed on var…
In situ FTIR spectroscopy coupled with mass spectrometry have been used to study the mechanism of nitrates formation and reduction over a common Pt-Rh/Ba/Al2O3 NOx storage catalyst. Our device consists of a transmission reactor cell (having a very small dead volume) dedicated to the evolution of surface species, and o…
Monodispersed silver nanoparticles (average diameter 4.4 ± 0.2 nm) were prepared via an amine adduct by the reaction of insoluble silver myristate with tertiary alkylamine.
A series of novel five-coordinate aluminium mono alkoxide complexes supported by R1,R2BPBA (bis-3-R1-5-R2-phenoxymethyl-bisamine) ligands were synthesized to probe the effect of electronic variation in the supporting ligand on the rate of ε-caprolactone polymerization. Substitution on the aromatic position para to the…
A supercapacitor/battery hybrid was fabricated using a mesoporous Ni / Ni ( OH ) 2 positive electrode and a mesoporous Pd negative electrode, both fabricated by electrodeposition of the metal within the hexagonal phase of a liquid crystalline template. Because we are predominantly interested in the performance of the…
PURPOSE: To develop a controlled-drug delivery system for the long-term inhibition of vascular endothelial growth factor (VEGF) and its mediated responses. METHODS: Poly(lactic-co-glycolic)acid (PLGA) microspheres containing anti-VEGF RNA aptamer (EYE001) formulations in the solid-state were developed by an oil-in-oil…
The particle size of mono-dispersed super-microporous silica spheres synthesized from tetramethoxysilane and n-decyltrimethylammonium bromide was successfully controlled by variation of the synthesis temperature, methanol ∶ water ratio in solvent and silica source in the range of 0.52 to 1.25 µm, while their mono-disp…
By self-organization polymers form a large number of superstructures with characteristic dimensions in the range of a few nanometers up to several micrometers. They can be used to produce in a controlled way a wide range of nano- and microstructured materials such as nanoparticles, nanoporous materials and drug carrie…
We have examined the changes that occur in the performance of solid oxide fuel cells (SOFCs) with Cu-ceria-yttria-stabilized zirconia anodes at 973 K following exposure to various hydrocarbon fuels, including methane, propane, n-butane, n-decane, and toluene. For cells with Cu contents of 20 wt % or less, large increa…
A Study of the Structural and Electrochemical Properties of La0.7Mg0.3 ( Ni0.85Co0.15 ) x ( x = 2.5 5.0 ) Hydrogen Storage Alloys , Pan, Hongge, Liu, Yongfeng, Gao, Mingxia, Lei, Yongquan, Wang, Qidong
Polyhydroxyalkanoates (PHAs) are biodegradable polymers with properties of thermoplastics Production of these polymers in an economically competitive fashion via bioengineering requires an understanding of the biosynthetic pathway and its regulation. This review summarizes our current knowledge of the mechanism of the…