Materials Literature
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Studies of a BiFeO 3 synthesis were performed to identify reasons for the appearance of secondary phases, the Bi 25 FeO 39 - and Bi 2 Fe 4 O 9 -type phases, in the reaction product. X-ray diffraction and microstructural analyses, performed on samples with different concentrations of impurities, showed that the impurit…
A review of mainly the past two years is undertaken of the industrial applications of pulsed power. Repetitively operated pulsed power generators with a moderate peak power have been developed for industrial applications. These generators are reliable and have low maintenance. Development of the pulsed power generator…
This article covers the recent development in the remarkably growing field of synthesis, characterization and particularly catalytic investigation of zeolite‐based materials combining micro‐ and mesoporous features. New synthetic approaches for preparation of micro/mesoporous composites including recrystallization of…
Above a certain size, boron clusters prefer a cylindrical arrangement over a planar one. Experimental determination of the collision cross section combined with density functional calculations showed that the transition to cylindrical structures takes place at B16+ for boron clusters. The picture shows some of the inv…
We report a synthetic electrochemical strategy to deliberately modify the catalytic reactivity of Pt bimetallic surfaces. The strategy consists of voltammetric surface dealloying of the non-noble constituent from Pt-poor bimetallic precursor compounds. We exemplify this method by dealloying carbon-supported Pt 25 Cu 7…
Three new crystalline microporous and mesoporous 2D covalent organic frameworks termed COF-6, -8, and -10 from boronic acid building blocks and 2,3,6,7,10,11-hexahydroxytriphenylene have been synthesized and structurally characterized. These materials constructed of C 2 O 2 B rings form eclipsed layered structures wit…
The discovery of liposome or lipid vesicle emerged from self forming enclosed lipid bi-layer upon hydration; liposome drug delivery systems have played a significant role in formulation of potent drug to improve therapeutics. Recently the liposome formulations are targeted to reduce toxicity and increase accumulation…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFundamentals of H2 Binding and Reactivity on Transition Metals Underlying Hydrogenase Function and H2 Production and StorageGregory J. KubasView Author Information Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Cite this: Chem. Rev. 2007, 10…
Recent years have seen tremendous progress in the design and study of nanomaterials geared towards biological and biomedical applications, most notable among these being the noble metal nanoparticles. In this review, we outline the surface-plasmon resonance-enhanced optical properties of colloidal gold nanoparticles d…
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By connecting two dissimilar anharmonic lattices exemplified by Fermi-Pasta-Ulam (FPU) model and Frenkel-kontorova (FK) model, we successfully build up one dimensional thermal diode. We find the rectifying effect is closely related to asymmetric interface thermal resistance (Kapitza resistance). And the asymmetric the…
The current status of the chemistry of metallasiloxanes is surveyed. Synthetic methods affording the metallasiloxane fragments and specific transformations of metallasiloxanes governed by the coordination properties of the metal site are analysed. The emphasis is placed onto the formation of compounds with the metalla…
We demonstrated the cancellation of the external magnetic field by the nuclear field at one edge of the nuclear polarization bistability in single InAlAs quantum dots. The cancellation for the electron Zeeman splitting gives the precise value of the hole g-factor. By combining with the exciton g-factor that is obtaine…
In this paper, we study several structural models of amorphous silicon, and discuss structural and electronic features common to all. We note spatial correlations between short bonds, and similar correlations between long bonds. Such effects persist under a first principles relaxation of the system and at finite tempe…
Zinc oxide (ZnO) nanostructures were synthesized by a simple sonochemical method without the assistance of an additional surfactant. The morphologies can simply be controlled only by changing the addition sequence of NH 3 ·H 2 O. When NH 3 ·H 2 O was added before or at the beginning of the ultrasonic treatment, a flow…
Purpose The purpose of this paper is to investigate the effectiveness of commercial clothes dryers based on energy‐efficiency and environmental impact analyses. Design/methodology/approach The study consisted of reviewing and examining the energy consumption of clothes dryers. It adopted the US Department of Energy's…
In tissue engineering applications the physical properties and degradation behavior of the designed synthetic scaffold are crucial for successful growth and function of desired tissue. Combining two or more biodegradable polymers into a single biomaterial composite may provide a pathway toward achieving new and highly…
Solid-phase synthetic templates for Au nanoparticles were developed using Merrifield resins and polyamidoamine (PAMAM) dendrimers. This synthetic scheme affords the opportunity to prepare metal nanoparticles in the absence of air and water, and it does not necessitate phase transfer agents that can be difficult to rem…
Nanorods of magnesium oxychloride (Mg x (OH) y Cl z · n H 2 O) and magnesium hydroxide (Mg(OH) 2 ) have been produced from crystalline MgO. Concentrated aqueous magnesium chloride (MgCl 2 ·6H 2 O), when allowed to react with MgO, yields oxychloride nanorods that can be converted into Mg(OH) 2 nanorods using NaOH, with…
A series of N -alkyl-substituted bis(pyrrolo[3,4- d ])tetrathiafulvalenes (PyTTFs, alkyl = n -butyl, n -octyl, n -dodecyl, n -cetyl, and n -icosyl, 3 − 7 ) were synthesized as highly soluble tetrathiafulvalene (TTF) derivatives. Their solid-state structures were characterized by X-ray diffraction, and their suitabilit…