Materials Literature
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The SrTiO3(110) surface, after annealing in ultrahigh vacuum (UHV) was observed by scanning tunneling microscopy/spectroscopy (STM/S). These observations were compared with the ultraviolet photoemission spectroscopy (UPS) and x-ray photoemission spectroscopy (XPS) data previously reported. The surface, after annealing…
Abstract This paper describes the effects that a low‐power plasma (<1 W) has on the chemistry, topography and surface energy of polyethylene (PE) film. The gases used for treating the film were air and nitrogen. The plasma cell was attached directly to the preparation chamber of an x‐ray photoelectron spectrometer,…
A pulsed beam of hyperthermal fluorine atoms with an average translational energy of 4.8 eV has been used to demonstrate anisotropic etching of Si. For 1.4 Hz operation, a room-temperature etch rate of 300 Å/min for Si(100) has been measured at a distance of 30 cm from the source. A 14% undercutting for room-temperatu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolyaminophosphine Containing Dendrimers. Syntheses and CharacterizationChristophe Galliot, Delphine Prevote, Anne-Marie Caminade, and Jean-Pierre MajoralCite this: J. Am. Chem. Soc. 1995, 117, 20, 5470–5476Publication Date (Print):May 1, 1995Publication History Published on…
We have studied the static electricity and optical retardation generated by rubbing the surfaces of polyimide (PI) and polyamide (PA) films. The static electricity increases with the Rubbing Strength (RS) and varies with the different PI films. We also investigated how the differences in the rubbing fabric affects the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDensity functional theory prediction of the second-order hyperpolarizability of metalloporphinesNobuyuki Matsuzawa, Masafumi Ata, and David A. DixonCite this: J. Phys. Chem. 1995, 99, 19, 7698–7706Publication Date (Print):May 1, 1995Publication History Published online1 May…
An extensive study of electrical resistivity, ac magnetic susceptibility, magnetization, specific heat, and NMR has been made on high purity samples of the spinel compounds ${\mathrm{CuRh}}_{2}$${\mathrm{S}}_{4}$ and ${\mathrm{CuRh}}_{2}$${\mathrm{Se}}_{4}$. The superconducting transitions occur at 4.70 K in ${\mathrm…
In the light of the solution of the three-dimensional structure of the NAD(+)-linked glutamate dehydrogenase from the mesophile Clostridium symbiosum, we have undertaken a detailed examination of the alignment of the sequences for the thermophilic glutamate dehydrogenases from Thermococcus litoralis and Pyrococcus fur…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Decanuclear Manganese Cluster with Oxo and Halide Bridging Ligands: Magnetic Behavior of an S .gtoreq. 12 SystemDavid P. Goldberg, Andrea Caneschi, Christopher D. Delfs, Roberta Sessoli, and Stephen J. LippardCite this: J. Am. Chem. Soc. 1995, 117, 21, 5789–5800Publication…
It was shown recently that nanocrystalline diamond films can be grown using fullerenes as precursors in an argon microwave plasma without the addition of hydrogen or oxygen. Extensive fragmentation of C60 in the microwave discharge leads to a copious production of the carbon dimer molecule, C2, as evidenced by intense…
A novel system of non-symmetric dimers containing 4-n-alkyloxy-substituted cinnamic acid and cyanobiphenyl groups has been studied. Two series were prepared: in one the flexible spacer was varied in length while the spacer was fixed. The spacer length has a profound influence on the nematic-isotropic transition temper…
The corrosion behavior of copper with various organic inhibitors in aerated solutions at pH 1 to pH 2 was studied using a potentiostat. The inhibitors studied included benzotriazole (BTAH), hydroxy benzophenoximes, L-hydroxy-5-nonylacetonphenone oxime, and sodium octyl hydroxamate (SOH). BTAH was shown to be the most…
The concept of generating liquid crystalline polymer (LCP) reinforcing fibrils on an in situ basis has a number of potentially attractive advantages over the use of the more commonly used glass-reinforced composites. The potential advantages include a wider range of processing options, improved surface appearance, rec…
Single crystals of \ensuremath{\alpha}-${\mathrm{Al}}_{2}$${\mathrm{O}}_{3}$ were irradiated at Ganil with $^{238}\mathrm{U}$ ions using four different energies: 0.48, 1.72, 2.78, and 3.40 MeV/u. All the irradiations were performed at a temperature of \ensuremath{\approxeq}80 K, with fluences extending from 1.2\ifmmod…
This paper examines the surface-sediment diatom assemblages of 31 shallow, artificial, enriched ponds in southeast England lying along a total phosphorus (TP) gradient (annual mean TP 25-646 μg 1−1), with respect to their species composition, and the role of such waters in generating diatom-chemistry training sets for…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNeutron Reflectivity and Structure of Polyether Dendrimers as Langmuir FilmsP. M. Saville, P. A. Reynolds, J. W. White, C. J. Hawker, J. M. J. Frechet, K. L. Wooley, J. Penfold, and J. R. P. WebsterCite this: J. Phys. Chem. 1995, 99, 20, 8283–8289Publication Date (Print):May…
The function of the polyhydroxyalkanoic acid (PHA) granule-associated GA14 protein of Rhodococcus ruber was investigated in Escherichia coli XL1-Blue, which coexpressed this protein with the polyhydroxybutyric acid (PHB) biosynthesis operon of Alcaligenes eutrophus. The GA14 protein had no influence on the biosynthesi…
Amorphous diamond films have been prepared by filtered cathodic arc deposition of carbon. The filtered arc is well suited for the growth of amorphous diamond, as it provides carbon ions with optimum kinetic energies at practical deposition rates. These films contain no hydrogen and are therefore structurally different…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBuilding of 2D Sheet of Tetrakis(methylthio)tetrathiafulvalenes Coordinating to Copper(I) Halides with Zigzag and Helical Frames and the 3D Network through the S.cntdot. .cntdot. .cntdot.S ContactsMegumu Munakata, Takayoshi Kuroda-Sowa, Masahiko Maekawa, Akihiro Hirota, and…
When Ag{111} is exposed to NO at 40 K, monolayer adsorption is followed by multilayer (NO)(2) formation. Heating to 60 K results in the desorption of the dimer multilayer, leaving a monolayer on the surface. Using isotopes, the monolayer has also been characterized as dimers, which have the N-N axis coplanar with the…