Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-pressure single-crystal x-ray diffraction study of two spin-crossover iron(II) complexes: Fe(Phen)2(NCS)2 and Fe(Btz)2(NCS)2Thierry Granier, Bernard Gallois, Jacques Gaultier, Jose Antonio Real, and Jacqueline ZarembowitchCite this: Inorg. Chem. 1993, 32, 23, 5305–5312P…
The hydrolytic degradation of poly(DL-lactic acid) in an aqueous environment in which hydroxyl radicals have been generated has been investigated. Different methods (gel permeation chromatography, differential scanning calorimetry, and scanning electron microscopy) were employed to study the mechanisms of degradation…
Transparent smooth and crack-free BaTiO3 thin films were deposited on stainless steel, fused silica, platinum plates, and platinized silicon wafers (100) using the sol-gel process. Barium 2-ethyl hexanoate and titanium isopropoxide were used as precursors. Annealing of the films at 750 °C for 2 h was necessary to get…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFerrocenyl substituted octakis(dimethylsiloxy)octasilsesquioxanes: a new class of supramolecular organometallic compounds. Synthesis, characterization, and electrochemistryMoises Moran, Carmen M. Casado, Isabel Cuadrado, and Jose LosadaCite this: Organometallics 1993, 12, 11…
The structure of liquid dimethylsulphoxide (DMSO) at 25 °C is explored using a combination of neutron diffraction with isotope substitution and computer simulation techniques. The potentials used in the computer simulation consist of Coulomb and 6-12 Lennard-Jones interactions for each of the carbon, oxygen, and sulfu…
The discovery of polydomain phases has been one of the fundamental results of the experimental and theoretical studies of solid phase transformations. These phases consist of the alternation of domains: twins of a product phase or layers of different product phases. Elastic interactions between domains lead to the for…
Aiming to obtain a rewritable compact disc (CD-rewritable) with high performance at both CD-velocity (CD1X) and double CD-velocity (CD2X), the phase change optical disc with the Ag-In-Sb-Te system has been developed. In the one-pass overwriting mode with eight-to-fourteen modulation, high carrier-to-noise ratio, wide…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of size and morphology of soot aggregates as determined by light scattering and electron microscope analysisJ. Cai, N. Lu, and C. M. SorensenCite this: Langmuir 1993, 9, 11, 2861–2867Publication Date (Print):November 1, 1993Publication History Published online1 Ma…
A radiolytic push pull reduction method for the preparation of reasonably monodisperse silver particles 7.0 nm in diameter in aqueous solution is described. Slow particle growth is achieved in this method by simultaneously reducing Ag ions and partially oxidizing Ag n particles. The absorption spectrum of the particle…
Reversibility is the salient feature of the photochemical solid-state reaction of 1 to 2. Prerequisites, however, are first that the compound is irradiated into the long-wavelength flank of the absorption band of the chromophore (λ = 570 nm), and second that the product is not recrystallized before the thermal reverse…
Steric interactions of the substituents weaken the strong NH … N hydrogen bonds (typical for porphycenes) in 1 (R = Me, Et) by increasing the N … N distance. As a consequence the coordination of metal ions, in particular of Zn2+ ions, is facilitated. These findings can be expected to give impetus to the research into…
The reflection of light from a medium with ordered spin structure characterized by the breakdown of time-reversal and parity symmetry is expected to be non-reciprocal even if the net magnetic moment of the medium equals zero. We report on the first experimental observation of spontaneous non-reciprocal rotation and ci…
The question of whether the Kramers-Kronig relationships place severe limitations on the bandwidths that can be achieved in homogeneous microwave absorbing materials is addressed. An attempt is made to determine, by computer simulation, the best bandwidths theoretically achievable for homogeneous coatings of one parti…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTime-resolved fluorescence of a new europium-chelate complex: demonstration of highly sensitive detection of protein and DNA samplesAshis K. Saha, Kathryn Kross, Edmond D. Kloszewski, Donald A. Upson, John L. Toner, Robert A. Snow, Chrostpher D. V. Black, and Vinay C. DesaiC…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxidation of organic substrates by a molecular oxygen/aldehyde/heteropolyoxometalate systemMasatoshi Hamamoto, Kouichi Nakayama, Yutaka Nishiyama, and Yasutaka IshiiCite this: J. Org. Chem. 1993, 58, 23, 6421–6425Publication Date (Print):November 1, 1993Publication History P…
Polymers used in implantable devices, although relatively unreactive, may degrade in vivo through unknown mechanisms. For example, polyetherurethane elastomers used as cardiac pacemaker lead insulation have developed surface defects after implantation. This phenomenon, termed "environmental stress cracking," requires…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA new surface oxygen complex on carbon: toward a unified mechanism for carbon gasification reactionsS. G. Chen, R. T. Yang, F. Kapteijn, and J. A. MoulijnCite this: Ind. Eng. Chem. Res. 1993, 32, 11, 2835–2840Publication Date (Print):November 1, 1993Publication History Publi…
To examine the role of organic constituents in the destruction of calcium carbonate skeletons, we aged fresh shells of the bivalves Nucula sulcata (organic-rich nacreous aragonites with low crystallite surface areas) and Cerastoderma edule (organic-poor porcellaneous aragonites, high crystallite surface areas) under b…
This article summarizes the characteristics of Honeywell's two-dimensional (2-D) arrays of micromachined microbolometers, discusses practical methods of operating these arrays in high-sensitivity room-temperature infrared (IR) imaging systems, and describes recent performance measurements.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of chiral symmetry breaking in crystallizationDilip K. Kondepudi, Kim L. Bullock, Jennifer A. Digits, John K. Hall, and Jason M. MillerCite this: J. Am. Chem. Soc. 1993, 115, 22, 10211–10216Publication Date (Print):November 1, 1993Publication History Published onlin…