Materials Literature
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Solution thermodynamics and mutual diffusivity of the system carbon dioxide−molten poly(ε-caprolactone) (PCL) have been investigated experimentally in the temperature range 70−85 °C and at pressures up to 6.5 MPa. Sorption data have been interpreted on the basis of Sanchez−Lacombe lattice theory. Sanchez−Lacombe param…
Ferroelectric (Bi,R) 4 Ti 3 O 12 [R: rare earth] thin films were synthesized by the chemical solution deposition (CSD) method. Heat treatment above 600°C was required for the fabrication of crystalline (Bi,R) 4 Ti 3 O 12 thin films of Bi-layered perovskite structure on Pt/TiO x /SiO 2 /Si substrates. The orientation o…
SrBi 4- x La x Ti 4 O 15 and Sr 2 Bi 4- x La x Ti 5 O 18 ceramic samples with different lanthanum content, in which x is 0.00, 0.10, 0.25, 0.50, 0.75, 1.00, have been prepared by the solid-state reaction method. It is found that La doping does not change the crystal structures of SrBi 4 Ti 4 O 15 and Sr 2 Bi 4 Ti 5 O…
Abstract For Abstract see ChemInform Abstract in Full Text.
A new beta titanium alloy group which exhibits multi functions, such as, ultra-low elastic modulus, ultra-high strength, huge elasticity, clayey plasticity at room temperature without work hardening, Elinvar and Invar properties, has been developed. These ''super'' properties are attributable to an arcane feature in r…
We have fabricated the Nd 3+ -doped mixed structure, Y 3 Sc x Al 5- x O 12 , polycrystals by the sintering method and studied them spectroscopically as potential laser media. Using the Judd-Ofelt theory to analyze the optical strength measured in absorption spectra, the parameters of oscillator strengths and fluoresce…
The relation between phase field and discontinuous models for crystal steps is analyzed. Different formulations of the kinetic boundary conditions of the discontinuous model are first presented. We show that (i) step transparency, usually interpreted as the possibility for adatoms to jump through steps, may be seen as…
The catalytic decomposition processes of NH 3 on heated W surfaces were examined by employing laser spectroscopic techniques. H atoms and NH 2 radicals were identified as primary decomposition products on the catalyzer surfaces. The effective enthalpies for the production of these species were both determined to be 15…
PURPOSE: The purpose of this study was to demonstrate that surgically implanted, controlled-release, biodegradable polilactofate microspheres (Paclimer) can be used safely to bypass the blood-brain barrier and deliver paclitaxel to malignant brain tumors. EXPERIMENTAL DESIGN: The rate of paclitaxel release from Paclim…
A Multimode-Type Transflective Liquid Crystal Display Using the Hybrid-Aligned Nematic and Parallel-Rubbed Vertically Aligned Modes, Lee, Seo Hern, Park, Kyoung-Ho, Gwag, Jin Seog, Yoon, Tae-Hoon, Kim, Jae Chang
Fixed-node diffusion quantum Monte Carlo (DMC) calculations of the ground and excited state energetics of the neutral vacancy defect in diamond are reported. The multiplet structure of the defect is modeled using guiding wave functions of the Slater-Jastrow type with symmetrized multideterminant Slater parts. For the…
We describe the fabrication of metallic Cu spiral/helical nanostructures prepared via selective electroless metallization of a phospholipid microtubule template. The metallization template is created through selective, sequential adsorption of the oppositely charged polyelectrolytes, sodium poly(styrenesulfonate) (PSS…
Clostridium thermocellum produces an extracellular multienzyme complex, termed the cellulosome, that allows efficient solubilization of crystalline cellulose. The complex is organized around a large noncatalytic protein subunit, termed CipA or scaffoldin, and is found either free in the supernatant or cell bound. The…
The resistivity and the Hall and Seebeck effects of polycrystalline n-type ${\mathrm{Ba}}_{0.996}{\mathrm{Y}}_{0.004}{\mathrm{TiO}}_{3}$ and undoped, reduced single crystal ${\mathrm{BaTiO}}_{3}$ were studied in the 100--300 K interval. Both Hall coefficient and resistivity showed similar temperature activated depende…
Electrical conduction measurements were made on two extreme types of directly linked porphyrin arrays by using nanoelectrodes. One type is the directly linked Zn(II)porphyrin arrays, consisting of 48 Zn(II)porphyrin moieties (Z48), and the other type is the completely flat, tape-shaped Zn(II)porphyrin arrays, consisti…
Abstract Nanophasic CeO 2 ‐based thin films were grown at low temperatures on SiO 2 and Si(100) by plasma‐enhanced (PE) CVD from a Ce IV β‐diketonate first generation precursor. Film depositions were carried out in low‐pressure Ar–O 2 plasmas at temperatures between 150 °C and 300 °C. The film microstructure was inves…
In this special issue on the Evo-Devo of amniote integuments, Alibardi has discussed the adaptation of the integument to the land. Here we will discuss the adaptation to the sky. We first review a series of fossil discoveries representing intermediate forms of feathers or feather-like appendages from dinosaurs and Mes…
Ni metal is evaporated onto the tips of ZnO nanorods , creating magnetic‐metal/semiconductor heterostructures (see Figure). Accurate thickness control allows tunable magnetic properties in nanosized magnetic layers on individual nanorods due to a crossover from superparamagnetism to ferromagnetism. These magnetic buil…
High-quality ZnO films have been grown on Zn-polar ZnO substrates by plasma-assisted molecular beam epitaxy. With increasing O/Zn ratio from the stoichiometric to the O-rich flux condition, the growth mode and the surface morphology changed from three-dimensional growth with a rough surface to two-dimensional growth w…
We report structural and spectroscopic data for a series of six-coordinate (nitrosyl)iron(II) porphyrinates. The structures of three tetraphenylporphyrin complexes [Fe(TPP)(NO)(L)], where L = 4-(dimethylamino)pyridine, 1-methylimidazole, 4-methylpiperidine, are reported here to a high degree of precision and allow obs…