Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
A well-defined, high-density poly(2-hydroxyethyl methacrylate) (PHEMA) brush was fabricated on the surface of a poly(tetrafluoroethylene- co -hexafluoropropylene) (FEP) film by surface-initiated living radical polymerization (LRP). First, a sufficient amount of peroxides as initiating moieties were successfully introd…
A fiber-optic sensor is designed based on multicavity Fabry-Perot interferometry for the study of optical thickness in self-assembled thin-film layers. This miniature sensor is applicable not only to the measurement of self-assembled polyelectrolyte layers but also to the immobilization of proteins such as immunoglobu…
Abstract We describe here in detail the recently introduced methodology for simulation of structural transitions in crystals. The applications of the new scheme are illus trated on various kinds of crystals and the advantages with respect to previous schemes are emphasized. The relevance of the new method for the prob…
Abstract GDIS is a freely available chemical visualization program for displaying molecules, periodic structures, and crystal morphologies. A key feature of the package is the mechanism for constructing and manipulating arbitrary crystal surfaces. This enables GDIS to offer a powerful tool set for computing surface an…
The structural, emissive, and nonlinear optical properties of new CuI adducts with para-substituted trans-stilbazolic and pyridinic ligands are reported. Single-crystal X-ray diffraction results indicate that the para-substituent on the organic ligand greatly influences the structural motif by its steric (tert-butyl),…
Ferric alkoxides (Fe(OR) 3 ), where R = Et, n Pr, i Pr, and n Bu, were used as initiators for bulk ring-opening polymerization of lactides. It was showed that these ferric alkoxides were efficient initiators for the ring-opening polymerization of lactides with higher than 90% of monomer conversions polymerized at 130…
Single-walled carbon nanotubes (SWNTs) with a narrow diameter distribution are synthesized by thermal chemical vapor deposition (CVD) of methane over Fe/MgO catalyst on the basis of parametric study considering Fe loading, reaction temperature and time, methane concentration, and structure of a support material. We fo…
A tissue-engineered small-diameter arterial graft would be of benefit to patients requiring vascular reconstructive procedures. Our objective was to produce a tissue-engineered vascular graft with a high patency rate that could withstand arterial pressures. Rat arteries were acellularized with a series of detergent so…
Polymerization of methyltrimethoxysliane (MTMS) results in methylsilsesquioxane (MSQ), which has found important applications in recent years including use as low- k dielectric materials in the semiconductor industry, superhydrophobic materials, monolithic columns, and hybrid matrixes for immobilizing proteins. For po…
Gold nanoparticles have unique optical and chemical properties that make them ideally suited for a number of applications in bionanotechnology, including optical probes, targeted drug delivery, and programmed materials synthesis. The recurring theme is the versatility of gold nanoparticles and how this versatility can…
We demonstrate a compact, linear, and low loss variation hybrid phase shifter using a left-handed (LH) transmission line. For frequencies from 4.3 to 5.6 GHz, this phase shifter gives a nearly linear phase variation with voltage, with a maximum deviation of /spl plusmn/7.5/spl deg/. Within this frequency range, the ma…
Abstract Innovative three-way catalysts containing ceria–zirconia solid solutions (CZ) with a ZrO2 content ranging from 5 to 75 mol% were developed. Such catalysts have very high oxygen storage/release capacity (OSC). The OSC of catalysts containing first-generation CZ was found to increase linearly with the amount of…
Two new mixed-metal tellurites, Na1.4Nb3Te4.9O18 and NaNb3Te4O16, have been synthesized by standard solid-state techniques using Na2CO3, Nb2O5, and TeO2 as reagents. The structures of Na1.4Nb3Te4.9O18 and NaNb3Te4O16 were determined by single-crystal X-ray diffraction. Both of the materials exhibit three-dimensional s…
In vapor-liquid-solid (VLS) growth, it is generally believed that nanowires would grow as long as the right catalysts and substrate are supplied as well as the growth temperature is adequate. We show here, however, that oxygen partial pressure plays a key role in determining the quality of the aligned ZnO nanowires. W…
Polyurethane foam, used as a supporting or insulating material, is sometimes formed in complex molds with significant variations in geometry and size. This work investigates the relationships between cell morphology, density, and mechanical properties in a molded polyurethane material using relatively small cylindrica…
This review focuses on the therapeutic utility of liposomes in the treatment of inflammatory disorders, and aims to offer the reader an overview of the in vivo results obtained with liposomally encapsulated anti-inflammatory and immune suppressive drugs. The past 30 years has clearly indicated the added value of lipos…
Hexamolybdate clusters have been covalently attached, for the first time, to the side chains of conjugated polymers. Two sets of such hybrid conjugated polymers have been prepared, one ( Ia and Ib ) with the clusters linked to the conjugated backbone through a rigid conjugated bridge, the other ( IIa and IIb ) through…
The railway frog made of 1. 14C- 12.72Mn high manganese steel has excellent work- hardening behavior, but it often fails ahead of expected using life because of nose rail spalling during service. It showed by analysis on fracture of railway frog that corrosion- fatigue failure led to surface spalling of frog, and the…
The three dimensional mathematic models of 18- pass continuous hot rolling for 304 stainless steel tod and wire have been established using three dimensional thermomechanical coupled elastic- plastic finite element method (FEM) by commercial finite element software MSC.Marc. The process is simulated using three contin…
The experiment of commercial heat treatment process for 82 mm plate of steel 14Cr1MoR (0. 15C- 1.48Cr- 0.57Mo)has been carried out at Wuyang Iron and Steel. The test results showed that heat- treated with 9℃/min heating up speed, austenite conditioning at 930 ℃ for 2.4 min/mm,water quenching at 870 ℃,and tempering at…