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。
We present a micromachined 10/spl times/10 array of thermoelectric infrared sensors fabricated in a commercial complementary metal-oxide-semiconductor (CMOS) integrated circuit process with subsequent bulk-micromachining on wafer-scale. This array is used to demonstrate the feasibility of a low-cost thermal imager. Th…
The nature of the surface rhenium oxide species present in supported rhenium oxide catalysts was determined as a function of the oxide support, rhenium oxide loading and secondary metal oxide additives. The catalysts were prepared using the incipient wetness impregnation method with dilute aqueous perrhenic acid as th…
Materials for energy sources, such as rechargeable batteries and fuel cells, are functional materials. Their development presents special challenges since they are designed for more than one function and must satisfy multiple and mostly interlocking requirements. A unique combination of properties is achievable in com…
In this paper the effects of temperature on partial discharge (PD) activity taking place inside a spherical void in epoxy resin system are studied. Indeed, some experimental tests previously performed on specimens, having different void shapes, under multi-stress condition of temperature and voltage, have shown very d…
The dipyrromethane + aldehyde condensation is a common method for the synthesis of trans-A2B2-porphyrins, but is often plagued by scrambling processes that lead to a mixture of porphyrins. The problem of scrambling is more pronounced with unhindered dipyrromethanes (e.g., 5-phenyldipyrromethane) than with hindered dip…
The decomposition of benzene was carried out using a plasma reactor packed with a mixture of BaTiO/sub 3/ and zeolite pellets, the zeolite-hybrid reactor. The reactor performance was characterized by measuring CO/sub x/ formed during plasma discharge and CO/sub x/ adsorbed on the solid surface, The decomposition effic…
Electrodes made by depositing ruthenium oxide on conducting poly(3,4-ethylenedioxythiophene) (PEDT) were studied for their electrochemical and impedance properties. In acidic electrolytes the composite electrodes exhibited large capacitance due to contributions from the double-layer capacitance and the faradaic capaci…
Bidimensional hexagonal or centred-rectangular mesoporous zirconia thin films have been reproducibly prepared by evaporation-induced self-assembly (EISA), which are stable up to 300 degrees C, with pore size around 35 A; the films can be post-functionalised with organic ligands presenting different functions, opening…
Successive reactions of gaseous trimethylaluminium (TMA) and ammonia on porous alumina were studied with the goal of finding suitable process conditions for preparing aluminium nitride (AlN) by atomic layer deposition (ALD), a technique based on separate saturating gas–solid reactions. The reaction of TMA was studied…
Abstract A fractional factorial experimental design was used to investigate relative effects of operating conditions on the filtration resistance of a slurry produced in a pharmaceutical semicontinuous batch crystallizer. The six operating variables were seed type, seed amount, temperature, solvent ratio, addition tim…
The aliphatic polyesters with high molecular weight have been prepared according to two methods. First is the synthesis of the polyesters by polycondensation of dimethyl succinate (DMS) with 1,4-butanediol (BD) using various metal alkoxides as a catalyst. Among the metal alkoxides used, titanium tetraisopropoxide [Ti(…
Silicon dioxide glass rods of micrometer sizes were synthesized by using surfactant–carbon nanotube co-micelles as templates. These glass rods were used as additives to reinforce inorganic ceramics. The mechanical strength of the silicon dioxide ceramic is enhanced by ∼100% in the presence of ∼6 wt% of CNTs.
Advanced finite element techniques for the simulation of materials behavior under mechanical loading are reviewed. Advantages, limitations and perspectives of different approaches are analyzed for the simulation of deformation, damage and fracture of materials taking into account their micro- and mesostructure. Develo…
A simple and predictive model is put forward explaining the experimentally observed substantial shift of the glass transition temperature, T g, of sufficiently thin polymer films. It focuses on the limit of small molecular weight, where geometrical `finite size' effects on the chain conformation can be ruled out. The…
Collagen matrices, crosslinked using N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide (E) and N-hydroxysuccinimide (N), were previously developed as a substrate for endothelial cell seeding of small-diameter vascular grafts. In the present study, the biocompatibility of various EN-crosslinked collagen matrices was evalu…
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTMultiphoton Gated Photochromic Reaction in a Diarylethene DerivativeHiroshi Miyasaka, Masataka Murakami, Akira Itaya, Dominique Guillaumont, Shinichiro Nakamura, and Masahiro IrieView Author Information Department of Polymer Science and Engineering Kyoto Institute of T…
Atomistic computer simulation methods have been employed to model the structure of the (104) surfaces of calcite (CaCO3), dolomite [CaMg(CO3)2] and magnesite (MgCO3). Our calculations show that, under anhydrous vacuum conditions, calcite undergoes the greatest degree of surface relaxation with rotation and distortion…
Monocytes and macrophages play important roles in host responses to implanted biomedical devices. Monocyte and macrophage interactions with biomaterial surfaces are thought to be mediated by adsorbed adhesive proteins such as fibrinogen and fibronectin. Non-fouling surfaces that minimize protein adsorption may therefo…
The use of porous matrices to enable damage tolerance in ceramic composites has emerged as a new paradigm in high performance materials. This paradigm obviates the need for fiber coatings for the purpose of crack deflection, thereby providing opportunities for lower cost manufacturing relative to that of conventional…
Poly(ethylene terephthalate) (PET) pellets used for production of soft drink bottles were reprocessed in a single-screw extruder and cut into pellets in five processing cycles. The reprocessed pellets were characterized by its rheological, mechanical, and thermal properties. Carboxylic end groups number concentration…