Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTInsertion of Dioxygen into a Platinum−Hydride Bond to Form a Novel Dialkylhydroperoxo Pt(IV) ComplexDouglas D. Wick and Karen I. GoldbergView Author Information Department of Chemistry, Box 351700 University of Washington, Seattle, Washington 98195-1700 Cite this: J. A…
A robust correlation between experimentally determinable parameter, B2/B2HS, and protein solubility is explored. Here B2 is the protein solution second virial coefficient and B2HS=2πσ3/3 is the hard sphere second virial coefficient of the protein whose core is described as a sphere with diameter σ. The origin of this…
Flax fibre reinforced epoxy composites were prepared by autoclave moulding technique. Influence of various fibre parameters such as lignin content, pectin content and degree of polymerisation on the composite properties was investigated. Fibre surface modifications such as alkali treatment, silane treatment and isocya…
The experimental evidence that the surface of pure vitreous silica can be hydrophobic imposes strong limitations on possible atomic configurations at that surface. This is due primarily to the fact that the electric field of the partially ionic SiO2 can have very strong interactions with adsorbed polar molecules and w…
Much progress had been made during the last two decades in acoustic and optical methods for measuring charge distributions in dielectrics. A review on this topic is given, which mainly covers the past research activities associated with that at our laboratory. For acoustic methods, we will discuss andoompare the pulse…
The kdpABC operon codes for the high affinity K(+)-translocating Kdp complex (P-type ATPase) of Escherichia coli. Upon expression of this operon in minicells, a so far unrecognized small hydrophobic polypeptide, KdpF, could be identified on high resolution SDS-polyacrylamide gels in addition to the subunits KdpA, KdpB…
Lateral inhomogeneities of grain boundaries caused by partially wetting grain‐boundary phases or pores induced in the grain boundary give rise to current‐constriction resistances close to grain‐to‐grain contacts. The present work presents a quantitative three‐dimensional analysis of the resulting grain‐boundary impeda…
A new synthetic approach to generate mesostructured phosphorus-free titania is reported. Mesostructured hexagonal and lamellar titania were prepared by using the cationic surfactant C 16 TMA + and soluble peroxytitanates in the presence of Na + and TMA +, respectively. Moreover, upon hydrothermal postsynthesis, the la…
High-field and -frequency electron paramagnetic resonance (HFEPR) spectroscopy has been used to study two complexes of high-spin manganese(III), d(4), S = 2. The complexes studied were (tetraphenylporphyrinato)manganese(III) chloride and (phthalocyanato)manganese(III) chloride. Our previous HFEPR study (Goldberg, D. P…
The structural characteristics of spinel (from both theoretical and experimental viewpoints) that are advantageous for producing transparent conducting oxide (TCO) materials are considered. A working hypothesis is presented for finding new TCO materials with spinel structure. Results of tight‐binding energy‐band calcu…
Three cholesterol-based gelators were synthesized which have a monobenzo-18-crown-6 ( 2 ), monoaza-18-crown-6 ( 3 ), and 1,10-diaza-18-crown-6 ( 4 ), respectively. These gelators could gelatinize 8 of 14 organic solvents tested herein, indicating that they possess a versatile gelation ability. Scanning electron micros…
All-ceramic crowns based on Zirconia-TZP-frameworks should have advantages in comparison to copings of Alumina (PROCERA-AllCeram) because of their mechanical properties. Zirconia-TZP-frameworks were manufactured after optical digitising using a modified Precident-DCS-System. The mean fracture strength and the vertical…
This paper surveys the properties which give silicone rubber its distinctive and highly desirable performance characteristics for use as outdoor insulation. The methods of assessing these properties arediscussed and this is followed byadetailedsurveyof whatis knownof agingaud recovery mechanisms. Corona is identified…
A new method for the fabrication of ordered arrays of small particles is reported here. A combination of microcontact printing of SAMs, surface-templated self-assembly, and confined crystallization has been used to produce 2D arrays of micro- and nanoparticles. The method allows highly accurate control over size distr…
Originally coming from aerospace technology, fibre reinforced plastics (FRP) are successfully used for various applications because of their excellent specific properties, e. g. high strength and stiffness, low weight and the potential of optimisation by orientating (esp. continuous) fibres along the load paths. In or…
Most of the silicone materials used for Hv outdoor insulation are high-consistency, heat cured polydimethylsiloxane (PDMS) elastomers. The unique properties of PDMS that make it suitable for HV applications are reviewed. The surface of these elastomers can be rendered hydrophilic by exposure to discharges. A time and…
We report the observation of a peculiar conductive phase with ferromagnetic interactions and a Curie-Weiss paramagnetism above the cooperative Jahn-Teller orbital-ordering temperature ${T}_{\mathrm{JT}}$ in a single crystal of the single-valent compound ${\mathrm{LaMnO}}_{3}.$ A positive Weiss constant increases disco…
The adsorption of molecular hydrogen gas onto charged single-walled carbon nanotubes (SWNTs) is studied by grand canonical Monte Carlo (GCMC) computer simulation. The quadrupole moment and induced dipole interaction of hydrogen with “realistically” charged (0.1 e/C) nanotubes leads to an increase in adsorption relativ…
We report polarization-analyzed, resonant x-ray diffraction at the sulfur K edge performed upon free-standing liquid-crystal films. Our studies of the thiobenzoate liquid-crystal enantiomer 10OTBBB1M7 yield the polarization states of resonant satellite peaks arising from characteristic superlattices in the chiral smec…
Preparative chromatography is a potential application for mesoporous silica due to its high surface area. Mesoporous spheres (MSs) have been prepared quickly from acid solution (see Figure), and their properties with regard to liquid chromatography and high-performance liquid chromatography (HPLC) explored. A new chro…