Cooperative motion and growing length scales in supercooled confined liquids
7 pages of Latex, 3 figures
Materials Literature
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Layered nickel hydroxide salts: synthesis, characterization and magnetic behaviour in relation to the basal spacing
Layered nickel hydroxide salts Ni(OH)2−x(A)x·nH2O (A = NO3−, n-alkylsulfonates CnH2n+1SO3− with n = 10, 14, 18) have been prepared by exchange reaction in aqueous medium at pH = 8.5, starting from the layered hydroxide acetate Ni(OH)1.5(CH3COO)0.5·nH2O. This parent compound has been synthesized by hydrolysis in polyol…
Active Corrosion Protection in Ce-Modified Hydrotalcite Conversion Coatings
Chromate conversion coatings (CCC) are noteworthy because of their ability to self-heal if mechanical or chemical damage occurs, provided the damage is not too severe. Self-healing, or active corrosion protection (ACP), involves several discrete processes: release of chromate from the coating, its transport through so…
Dealloying and Corrosion of Al Alloy 2024-T3
We present results of a comprehensive electrochemical study aimed at determining the factors that control the corrosion evolution of the important structural alloy Al 2024-T3. An important aspect of corrosion in this alloy is copper redistribution. The redistributed copper serves to enhance the kinetics of the corrosi…
Thermal Hydrosilylation of Undecylenic Acid with Porous Silicon
The thermal reaction of undecylenic acid with a hydrogen-terminated porous silicon surface takes place at 95°C to yield an organic monolayer covalently attached to the surface through Si-C bonds. The acid terminal group remains intact and is not affected by the chemical process. Under the same conditions, alcohols bre…
Mica Crystal Chemistry and the Influence of Pressure, Temperature, and Solid Solution on Atomistic Models
Research Article| January 01, 2002 Mica Crystal Chemistry and the Influence of Pressure, Temperature, and Solid Solution on Atomistic Models Maria Franca Brigatti; Maria Franca Brigatti Dipartimento di Scienze della Terra, Università di Modena e Reggio Emilia, Via S. Eufemia, 19, I-41100 Modena, Italy, brigatti@unimo.…
Structure of Jahn–Teller distorted solvated copper(ii) ions in solution, and in solids with apparently regular octahedral coordination geometry
Regular octahedral coordination has been reported for some copper(II) complexes in the solid state on the basis of crystallographic studies, e.g. hexaaquacopper(II) bromate, [Cu(OH2)6](BrO3)2, hexaaquacopper(II) hexafluorosilicate, [Cu(OH2)6]SiF6, and hexakis(pyridine-1-oxide)copper(II) perchlorate, [Cu(ONC5H5)6](ClO4…
A Solid Oxide Fuel Cell Using Y-Doped BaCeO[sub 3] with Pd-Loaded FeO Anode and Ba[sub 0.5]Pr[sub 0.5]CoO[sub 3] Cathode at Low Temperatures
The performance of a solid oxide fuel cell (SOFC) with the configuration, 3 wt % Pd-loaded FeO|25 mol % -doped air, was studied between 350 and 600°C. The BCY25 electrolyte showed higher ion conductivities than 8 mol % yttria-stabilized zirconia (YSZ) below 800°C and 20 mol % -doped ceria (SDC) below 600°C, thus havin…
Cascade energy transfer in a conformationally mobile multichromophoric dendrimer
A conformationally flexible, generation-2,3 poly(aryl ether) dendrimer favors quantitative cascade fluorescence resonance energy transfer without the appearance of undesired chromophore self-quenching interactions such as excimer formation.
Photophysical Properties and Antibacterial Activity of Meso-substituted Cationic Porphyrins¶
A series of derivatives of 5,10,15,20-tetrakis-(4-N-methylpyridyl)-porphine, where one N-methyl group was replaced by a hydrocarbon chain ranging from C6 to C22, were characterized for their photophysical and photosensitizing properties. The absorption and fluorescence features of the various compounds in neutral aque…
Phosphates as Nuclear Waste Forms
Research Article| January 01, 2002 Phosphates as Nuclear Waste Forms Rodney C. Ewing; Rodney C. Ewing 1Department of Nuclear Engineering and Radiological Sciences2Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109 Search for other works by this author on: GSW Google Scholar LuMin Wang…
Inorganic chemistry highlights
Molten Zintl Alloys (W. van der Logt & P. Verkerk). Structure and Bonding Around the Zintl Border (G. Miller, et al.). Structure Prediction and Determination of Crystalline Compounds (J. Schon & M. Jansen). Multivalent Cation Conductors (G. Adachi & N. Imanaka). The Potential of Pentagonal Building Blocks: From Giant…
Influence of the Surface Topography of Stainless Steel on Bacterial Adhesion
Bacterial adhesion on stainless steel may cause problems such as microbially induced corrosion or represent a chronic source of microbial contamination. The investigation focussed on how the extent and patterns of four bacterial species comprising three different phyla and a broad variety of physicochemical characteri…
Characterization of CaCO3 hydrates by micro‐Raman spectroscopy
Abstract The Raman spectra of the three varieties of hydrated calcium carbonate, monohydrate, hexahydrate and ‘amorphous,’ are reported for the first time and discussed according to the already known crystal structures. The transformation by dehydration of these hydrated phases into the usual anhydrous forms was follo…
Ab initio Study on the Magnetism in ZnO-, ZnS-, ZnSe- and ZnTe-Based Diluted Magnetic Semiconductors
The magnetism and the electronic structure of II–VI compound-based diluted magnetic semiconductors (DMSs) are investigated based on ab initio calculations. The stability of the ferromagnetic state in ZnO-, ZnS-, ZnSe- and ZnTe-based DMSs is investigated systematically and materials design for ferromagnetic DMSs is giv…
An Electrochemical Capacitor Based on a Ni(OH)[sub 2]/Activated Carbon Composite Electrode
In order to enhance energy density, a hybrid type pseudocapacitor/electric double layer capacitor (EDLC) was considered and its electrochemical properties were investigated. At various current densities, stable charge/discharge behaviors were observed with much higher specific capacitance values of 530 F/g compared wi…
Application of Stereolithography for Scaffold Fabrication for Tissue Engineered Heart Valves
A crucial factor in tissue engineering of heart valves is the functional and physiologic scaffold design. In our current experiment, we describe a new fabrication technique for heart valve scaffolds, derived from x-ray computed tomography data linked to the rapid prototyping technique of stereolithography. To recreate…
Nanostructured advanced materials. Perspectives and directions
Abstract A focus of frontline interdisciplinary research today is the development of the conceptual framework and the experimental background of the science of nanostructured materials and the perspectives of its technological applications. We consider some current directions in the preparation, characterization, mani…
Tensile and Barrier Properties of Edible Films Made from Whey Proteins
ABSTRACT: Whey protein isolate (WPI)‐based edible biopolymer films were prepared using a film‐forming stage designed to provide heat‐induced gelation. Effects of whey‐protein ratios, calcium, glycerol (plasticizer), and emulsion droplet incorporation on film tensile and barrier properties were investigated. Protein ra…
Raman spectroscopy of molybdenum oxides (part 1): structural characterization of oxygen defects in MoO3-x by DR-UV/VIS, Raman spectroscopy and X-ray diffraction
MoO3-x samples were prepared under different temperature and gas atmosphere conditions. The samples, which are all of the crystallographic MoO3 structure, have been investigated by XRD, SEM, diffuse reflection (DR) UV/VIS and Raman spectroscopies to characterize their properties as a function of the different concentr…