Materials Literature
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Recent technological advances in thermal analysis present educational opportunities. In particular, modulated differential scanning calorimetry (MDSC) can be used to contrast reversing and nonreversing processes in practical laboratory experiments. The introduction of these concepts elucidates the relationship between…
The mechanisms of crack nucleation and propagation of the lamellar microstructures found in pearlite were studied by in situ transmission electron microscopy. It was found that, in addition to the predominant mechanism of cleavage fracture in the cementite plates, ductile fracture of the cementite plates is another cr…
V 2 O 5 thin films were prepared by reactive rf sputtering and used in the application as electrodes in rechargeable battery with Li as a counterelectrode. The V2O5 films were deposited onto uncoated and SnO2 coated glass by sputtering a V cathode using Ar+O2 gas mixtures. The structural properties of the V2O5 films w…
This work deals in the first part, with the synthesis and characterization of a new-type carbonific. Two steps were used in the synthesis of the carbonific. Meanwhile, the structure was characterized by Fourier transform infrared spectroscopy (FTIR), magic-angle spinning nuclear magnetic resonance (MAS-NMR) 13 C spect…
Indium tin oxide (ITO) films prepared by dc magnetron sputtering were annealed in air, vacuum, and oxygen gas atmospheres. The electrical properties and internal stresses of these annealed ITO films were systematically investigated. It was found that, among the above postannealing treatments, oxygen gas annealing sign…
A critical characteristic of nanoparticles and, in general, of nanomaterials, is the overweighing importance of the surface and interface layers relative to the bulk because of the small size of the aggregates (in three dimensions) or thickness of the layers (in the case of two dimensions) that constitute the nanomate…
Protein folding is determined by molecular features in the unfolded state, as well as the native folded structure. In the unfolded state, imino acids both restrict conformational space and present cis-trans isomerization barriers to folding. Because of its high proline and hydroxyproline content, the collagen triple-h…
Abstract OCTA (Open Computational Tool for Advanced material technology) is an integrated simulation system for polymeric materials developed by a joint project of industry and academia supported by Japanese government. It aims at exploring the utility of mesoscale modelings developed in polymer science. OCTA consists…
Abstract Polypyrrole films were electrochemically synthesized by direct oxidative polymerization of pyrrole in acetonitrile containing β‐naphthalene sulfonic acid or tetrabutylammonium tetrafluoroborate as an supporting electrolyte. We characterized the as‐grown polypyrrole films by resonance Raman spectroscopy in the…
Vertically aligned bamboo-like carbon nanotubes (CNTs) are successfully synthesized on Ni-coated Si (Ni/Si) substrates by hot-filament-assisted radio frequency (rf) magnetron sputtering. Transmission electron microscopy analysis reveals that a bamboo-like structure is formed inside the nanotube that has a catalytic Ni…
This paper compares the hairiness of Solospun yarns with conventional ring spun worsted yams of the same specifications. A 24-spindles worsted ring spinning frame is used to spin the Solospun and conventional ring spun yarns at the same time, and yarn hairiness is measured. The total hairiness number ( T p ), the numb…
After being thrown onto a solid substrate, very soft spherical gels bounce repeatedly. Separate rheological measurements suggest that these balls can be treated as nearly elastic. The Hertz contact deformation expected in the static (elastic) limit was observed only at very small impact velocities. For larger velociti…
The preparation by magnetron sputtering of p-type semiconducting thin films consisting of a multicomponent oxide composed of Cu oxide and Co oxide is described. The electrical, optical, and crystallographical properties of films deposited by rf magnetron sputtering using (Cu2O)1−x–(CoO)x powder targets were strongly d…
This theoretical work describes pores between fibers in general fiber assemblies. The basic idea is to treat the pores between fibers—under certain assumptions—as air fibers surrounded by fictional borders. Different pore characteristics are formulated from basic definitions of fiber assemblies. It is possible to find…
A diode-structure flat-panel luminescent lamp has been fabricated by using carbon nanotube (CNT) film as cathode. The CNT emitters were grown on silicon substrate by catalytic decomposition of acetylene. Studies of scanning electron microscopy and transmission electron microscopy show that as-grown CNTs are randomly o…
Abstract In the 2 nd order mountain brook “Oberer Seebach” (Austria), diatoms and cyanoprokaryotes dominate the microphytobenthos, with the diatoms forming the richest species group. Comparative investigations of different habitats clearly show seasonal variations in algal species composition and biomass throughout th…
The conductivity and magnetic susceptibility of disordered titanium monoxide TiO y (0.920≤ y ≤1.262) containing vacancies in titanium and oxygen sublattices are investigated. For TiO y monoxides with an oxygen content y ≤1.069, the temperature dependences of the conductivity are described by the Bloch-Grüneisen functi…
Abstract A new linear chain complex of oxo‐centered trinuclear manganese clusters, [{Mn III 2 Mn II O(O 2 CCHCl 2 ) 6 (H 2 O)}{Mn(O 2 CCHCl 2 ) 2 (H 2 O) 4 }] n ( 1 ), has been synthesized by treatment of a mixture of Mn(OAc) 2 ·4H 2 O and dichloroacetic acid in dichloromethane with KMnO 4 . In this complex chains are…
This paper is a case study examining the cause, effect, and solution of an actual "noncharacteristic" even harmonic problem in an electrochemical plant. While issues concerning "characteristic" harmonics are well documented in the literature, limited information is available describing how noncharacteristic harmonic c…
Several poly(alkoxyphosphazenes) and poly(fluoroalkoxyphosphazenes) were synthesized and allowed to react with various organic nucleophiles. Reactions were carried out at room temperature (25 °C) and at 67 °C in tetrahydrofuran (THF) and were monitored by 31 P NMR spectroscopy. The possible use of single-substituent p…