Materials Literature
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Selective deposition was observed in the growth of silicon dioxide using liquid‐phase deposition process. By adjusting the growth parameters, the key mechanism leading to the observed selective deposition was identified. It is found that within the same period of time, a thicker oxide film is grown when the native oxi…
Conjugated porphyrin oligomers show strong optical dichroism when oriented in a stretched polymer matrix. It is shown that the zinc porphyrin polymer (∼10 repeat units) aligns, as expected, with its backbone in the stretch direction, whereas the dimer orients with its molecular plane perpendicular to the stretch. This…
Electrochemical calculations of 3d-transition metal (Fe, Ni, Co and Cr)-water systems at 558 K were performed to evaluated the general corrosion behavior of materials in a BWR primary circuit. Thermodynamics expressed by Pourbaix diagrams, the solubilities of oxides and the equilibrium activities of H2, O2 and H2O2 in…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMonolayers of Bolaform Amphiphiles: Influence of Alkyl Chain Length and CounterionsGuangzhao Mao, Yi-Hua Tsao, Matthew Tirrell, H. Ted Davis, Volker Hessel, Jan van Esch, and Helmut RingsdorfCite this: Langmuir 1994, 10, 11, 4174–4184Publication Date (Print):November 1, 1994…
Abstract The nanoscopic domain of structural complexity, which ranges from 1 to 100 run on a particle size scale includes a relatively unexplored area of science which resides between classical chemistry and molecular biology. This rapidly growing area of science is referred to as nanoscopic chemistry and architecture…
Abstract Soil samples collected from 110 different sites in the Kyoto district, Japan, were analyzed quantitatively using X-ray fluorescence spectroscopy to predict unknown soil origins. More than 250 mg soil samples, ground to −100 + 200 mesh and pressed, were analyzed for Si, K, Ca, Ti, Fe, Rb and Sr with good repro…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT113Cd Shielding Tensors of Monomeric Cadmium Compounds Containing Nitrogen Donor Atoms. 1. CP/MAS Studies on Cadmium Poly(pyrazolyl)borate Complexes Having N4 and N6 Coordination EnvironmentsAndrew S. Lipton, Scott S. Mason, Daniel L. Reger, and Paul D. EllisCite this: J. Am…
Abstract Computer simulation of twofold coordinated silicon and germanium atoms in solid silicon dioxide is performed in a cluster approach with various boundary conditions with the help of the quantumchemical MO method MNDO. Optical absorption and luminescence in the twofold coordinated atoms are found to disagree wi…
Abstract Na 2 B 2 Se 7 (I 2/a; a = 11,863(4) Å, b = 6,703(2) Å, c = 13,811(6) Å, β = 109,41(2)°; Z = 4); K 2 B 2 S 7 (I 2/a; a = 11,660(2) Å, β = 6,827(1) Å, c = 12,992(3) Å, β = 106,78(3)°; Z = 4) und K 2 B 2 Se 7 (I 2/a; a = 12,092(4) Å, b = 7,054(2) Å, c = 13,991(5) Å, β = 107,79(3)°; Z = 4) wurden durch Reaktion s…
Crevice corrosion of alloy 625 in both chlorinated and nonchlorinated American Society for Testing and Materials (ASTM) artificial ocean water was modeled. Secondary current and potential distributions as a function of crevice depth were obtained from the model using the following crevice initiation criteria ( i ) E <…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Dynamics Simulation of the Collapse of Poly(1,4-trans-butadiene) to Globule and to a Thin FilmYongjian Zhan and Wayne L. MatticeCite this: Macromolecules 1994, 27, 24, 7056–7062Publication Date (Print):November 1, 1994Publication History Published online1 May 2002P…
Highly porous silicon reacts with water vapor in the air to create images on photographic plates within seconds. It is demonstrated that this process, known as chemography, can be used diagnostically to reveal inhomogeneity in porous silicon layers that is not always detectable by optical or electron microscopy. It is…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMononuclear Barium Diketonate Polyamine Adducts. Synthesis, Structures, and Use in MOCVD of Barium TitanateRobin A. Gardiner, Douglas C. Gordon, Gregory T. Stauf, Brian A. Vaartstra, Robert L. Ostrander, and Arnold L. RheingoldCite this: Chem. Mater. 1994, 6, 11, 1967–1970Pu…
The incorporation of Zn^(2+) into tetrahedral framework positions of zeolites with the sodalite topology (SOD) is obtained by direct synthesis. The zincosilicates are characterized by thermal analyses, a Rietveld refinement of powder X-ray diffraction (XRD) data, and infrared \n(IR) and ^1H, ^(23)Na, ^(13)C, and ^…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHeteroepitaxy of Syndiotactic Polypropylene with Polyethylene and HomoepitaxyM. Schumacher, A. J. Lovinger, P. Agarwal, J. C. Wittmann, and B. LotzCite this: Macromolecules 1994, 27, 23, 6956–6962Publication Date (Print):November 1, 1994Publication History Published online1…
Abstract This work focuses on the relationship between the morphology of filled rubbers and their behavior at small and large deformations. Composites were made from vinyl terminated polydimethylsiloxane (PDMS) and different fumed silicas. Filler concentration range was kept between 0 to 40 phr (parts of silica per hu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies on Aliphatic Portion of Coal Organic Materials Based on Ruthenium Ion Catalyzed OxidationSatoru Murata, K. U-esaka, Hirohiko Ino-ue, and Masakatsu NomuraCite this: Energy Fuels 1994, 8, 6, 1379–1383Publication Date (Print):November 1, 1994Publication History Publishe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPt2+ vs. Pt4+ in AsS33- Solutions and Isolation of the Clusters [Pt(As3S5)2]2- and [Pt3(AsS4)3]3-. Observation of Unique Thioarsenate ligands and Pt-As BondsJun-Hong Chou and Mercouri G. KanatzidisCite this: Inorg. Chem. 1994, 33, 24, 5372–5373Publication Date (Print):Novemb…
P D Kingsley, J Palis; GRP2 proteins contain both CCHC zinc fingers and a cold shock domain., The Plant Cell, Volume 6, Issue 11, 1 November 1994, Pages 1522–15
Fat injection is being used for the correction of various soft-tissue defects. In this study, the manner of fat injection yielding the greatest transplant viability was examined. Autologous fat was obtained from the inguinal area of rats and subsequently reinjected to the nuchal region, an area naturally poor in subcu…