Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleSynthesis and investigation of the nonlinear optical properties of various p-aminophenyl sulfone oligomersMichael A. Mitchell, Masayuki Tomida, Anne Buyle Padias, H. K. Hall, Jr., Hilary S. Lackritz, Douglas R. Robello, Craig S. Willand, and David J. WilliamsCite this: Chem. Mat…
Abstract Analysis of products formed in the end‐capping step during the synthesis of two block copolyurethanes being studied as biomedical materials has shown the presence of dimeric soft segments and free diisocyanate. In this standard two‐step synthesis, the presence of these compounds lead to block copolyether‐uret…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfluence of the sample preparation method of the ultra-small-angle x-ray scattering of lightly sulfonated polystyrenesB. P. Grady, H. Matsuoka, Y. Nakatani, S. L. Cooper, and N. IseCite this: Macromolecules 1993, 26, 15, 4064–4066Publication Date (Print):July 1, 1993Publica…
Eighteen soils from northwestern Switzerland were used to study the value of seven universal extractants (CaCl2; DB‐DTPA; Mehlich 1, 2, and 3; Morgan‐Wolf; and NH4OAc‐EDTA) for predicting plant available potassium (K) as compared to a bioassay (a modified Neubauer test with winter rye). These extractants were evaluate…
During a building corrosion control study, bottles containing acid‐preserved water samples with high levels of lead often had particulate material on the bottom. Scanning electron microscope analysis of the particles showed the presence of tin and the absence of lead, indicating the probable source of lead to be lead–…
Materials layered together for their electronic properties and chemical stabilities are typically subjected to residual stresses induced by thermal expansion mismatch, epitaxy, phase transition, or other mechanisms specific to deposition procedures. Interacting with preexisting defects, these stresses can cause brittl…
Passive films were formed on a high purity Fe‐23 Cr alloy in acid sulfate solutions in the presence and absence of chloride ion. The resulting film composition was investigated by Auger depth profiling. The passivated samples were exposed to a 1 M solution at a constant potential slightly above the critical pitting po…
Photocurrent measurements for stainless steel type 304 in the as‐received condition after dc and AV passivation have confirmed that significant changes of the passive film properties occur due to AV passivation. The photocurrents were the highest for the sample treated by the AV passivation process (AVPP). The bandgap…
Abstract Blends of poly(ethylene terephthalate‐Co‐p‐oxybenzoate), PET/PHB, with poly(ethylene terephthalate), PET, have been studied in the form of as‐spun and drawn fibers. DSC melting and crystallization results show that the PET is compatible with LCP and the crystallization of PET decreases by the addition of LCP…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelf-assembling nickel clusters form binding sites for alkali metal cations: novel analogs of enolate aggregatesOtto F. Schall, Kerry Robinson, Jerry L. Atwood, and George W. GokelCite this: J. Am. Chem. Soc. 1993, 115, 14, 5962–5969Publication Date (Print):July 1, 1993Publi…
Repeated point contact loading has been used to investigate the deformation and fracture of single‐crystal magnesium oxide subjected to cyclic loading by softer metallic cones at room temperature. The results of the investigation clearly indicate that MgO is susceptible to cyclic fatigue. An explanation for the mechan…
In situ ellipsometry may be used for real time measurements on growing films through windows in deposition systems. It is well known that the initial film growth may be in the form of islands and other structures which may ultimately develop into a nearly homogeneous, isotropic growing film. Consequently, measurements…
Article Beiträge zum thermischen Verhalten von Sulfaten: IX. Einkristallstrukturverfeinerung der Metall(III)-sulfate Cr2(SO4)3 und Al2(SO4)3 was published on July 1, 1993 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 204, issue 1-2).
The insertion of a Gly residue (designated as Gly-80b) between the C-cap of the alpha II-helix (Gln-80) and the N-cap of the alpha III-helix (Trp-81) in Escherichia coli ribonuclease HI enhances the protein stability by 0.4 kcal/mol in delta G (Kimura, S., Nakamura, H., Hashimoto, T., Oobatake, M., & Kanaya, S. (1992)…
X-ray masks present a measurement object that is different from most other objects used in semiconductor processing because the support membrane is, by design, x-ray transparent. This characteristic can be used as an advantage in electron beam-based x-ray mask metrology since, depending upon the incident electron beam…
Extensive coverage of previous work in the area of weavability limit theories, their experimental validation, and their practical importance is reviewed. The review also includes previous work on maximum construction relationships derived empirically, as well as a comparison of different theories and empirical studies.
A model silica-supported copper catalyst has been studied with temperature programmed desorption, x-ray photoelectron spectroscopy, infrared reflection–absorption spectroscopy, and scanning tunneling microscopy. The reactions of water and nitric oxide on the Cu/SiO2 catalyst were also investigated. The model catalyst…
Article METAL-DIRECTED MACROCYCLIZATION REACTIONS INVOLVING FORMALDEHYDE, AMINES AND MONO- OR BI-FUNCTIONAL METHYLENE COMPOUNDS was published on July 1, 1993 in the journal Reviews in Inorganic Chemistry (volume 13, issue 3).
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInteraction of hydrogen cyanide/deuterium cyanide with silicon(100)-2.times.1Y. Bu, L. Ma, and M. C. LinCite this: J. Phys. Chem. 1993, 97, 27, 7081–7087Publication Date (Print):July 1, 1993Publication History Published online1 May 2002Published inissue 1 July 1993https://pu…
Adsorption and dissociation of CO2 on Fe(100) was studied using temperature programmed desorption, x-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS), high-resolution electron energy-loss spectra (HREELS), and low-energy electron diffraction. CO2 adsorbs on Fe(100) at 110 K to form tw…