Materials Literature
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We report the experimental structure determination of cold, mass selected Ag55 +/- cluster ions using the recently developed technique of trapped ion electron diffraction. By comparison of experimental and theoretical molecular scattering functions and consideration of computed total energies, we show that Ag 55 + con…
A novel solvent-based single wafer clean process with megasonic feature and single pass fresh solvent spray has been developed This process mitigated the copper undercut problem which existed in the conventional system. The electrical parametric performance meets or outperforms that from the baseline bench process. Mo…
In connection with the recent experimental discoveries on gigantic photoenhancements of the electronic conductivity and the quasi-static dielectric susceptibility in SrTiO 3 , we theoretically study a photo-generation mechanism of a charged ferroelectric domain in this quantum dielectric. The photo-generated electron,…
The homogeneity of typical electrolessly plated Pd/Ag membranes for H2 separation was investigated with XAFS and XPS depth profiling. Next the crucial mixing of the separate Pd and Ag layers, obtained after the two sequential plating steps, was followed in situ with XRD. The results show that some low temperature allo…
Transport models for carrier transport in a semiconducting carbon nanotube are presented. Results encompass tubes of varying diameter and chirality. The focus is on transport in response to a small, axially applied electric field. Models for phonon-limited transport are developed whereby carriers scatter with stretchi…
The iron losses increase when induction motors were supplied by inverter. Based on separated iron losses model, an iron losses computational model considering harmonic component concerning induction motor fed by SPWM inverter was presented through harmonic analysis method. The parameters of the inverter were integrate…
Magnesium alloys are remarkably corroded in chloride environments. The corrosion behavior of the AZ91 alloy is mainly dependent on Fe/Mn ratio and size and distribution of the intermetallic Al-Mn-Fe phase and Mg17Al12 (β-phases) particles. Grain size and heat-treatment condition also influence both the microstructure…
Abstract A mathematical analysis previously developed to solve the quadratic tensor equations that relate molecular hyperpolarizability and bulk medium nonlinear optical constants is applied to donor–acceptor polyene molecules. The focus is on mutual polarization of spatially organized collections of molecules, e.g.,…
The effect of the functionalization of polypropylene by different chemicals on the fabrication and properties of the resulting nanocomposites was studied. Different nanocomposites were prepared using different functionalized polypropylenes (PP) as coupling agents. In order to have better control of the interaction bet…
Ni-Raney catalysts have a sponge-like structure and are largely applied in reactions of organic hydrogenation. The industrial production has the advantages of low cost and simple process, however this catalyst has the inconvenient of the easy deactivation. The understanding of the deactivation mechanism has motivated…
In our previous study, semi-transparent and flexible biodegradable films were successfully prepared from myofibrillar proteins of blue marlin meat. The objective of this study was to elucidate the mechanism of film formation. Effect of pH on the amount of surface hydrophobicity and surface SH group in the film-forming…
Tetragonal tungsten bronze structured K3Li2(Nb1 - xTax)5O15(KLNT) (0.0≤x≤1.0) ceramics was synthesized by the solid state reaction method. The sintering behavior, phase development and dielectric characteristics of KLNT ceramics as a function of x (Nb/Ta ratio) were examined. When the content of Ta increased the tempe…
ABSTRACTThe two n-type (Bi2Te3)Se3 semiconductor samples were grown from Bi2Te3 and Bi2Se3 components using traveling heater and pulverized methods. Thermoelectric properties such as electrical conductivity and Seebeck coefficient have been measured in a temperature range 11-373 K using Harman technique. At the room t…
This introductory paper contains personal perspectives about the importance of cyclotron resonance in forming our modern view of solids. The papers following this one will discuss the discovery, refinements, and some of the latest developments. Although I will touch on some of these subjects, I leave the details to th…
Detailed provenance analysis and glauconite morphology of the Broken River and Iron CreeklWaipara Formations and other correlatives were conducted at 6 localities: the MandamusDove River area, Waipara River, Avoca-Iron Creek, Castle Hill Basin, Malvern and Mt Somers. The basal Broken River Formation is a fluvial bould…
Air plasma etching followed by scanning electron microscope (SEM) imaging technique for visualizing the inorganic nanofillers in polymeric composites is a promising technique for quick screening of exfoliation and dispersion of nanofillers in nanocomposites in manufacturing and materials development environments. The…
The effects of saturated and unsaturated fatty acids (lauric acid, palmitic acid, steric acid, oleic acid, linoleic acid, soybean oil) on Sphaerotilus natans, 0B17 ( Pseudomonas sp.), and recombinant Escherichia coli DH5(/pUC19/CAB were studied. Oleic acid enhances Poly-3-hydroxybutyrate (PHB) production in these thre…
Nylon 11, a popular material for commercial use, has been combined with low-percent loads of carbon nanofibers (CNFs) to tailor mechanical, fire retardancy, and thermal properties. Transmission electron microscopy images show that the CNFs are randomly aligned in the polymer matrix. We show that the thermal conductivi…
ポリメタクリル酸メチル (PMMA) に9, 10-アントラキノン (AQ) を10wt%溶解したフィルムのフォトクロミズムを分光学的手法と分子軌道法を用いて検討した. AQ/PMMAフィルムは, 紫外線 (UV) 照射することにより淡黄色から朱色へ変化し, さらに約373K以上に温めると脱色する. 吸収スペクトルはUV照射により380nmの吸収が強まり, 485nmには新たに幅広い吸収が生じる. 前者はアントラヒドロキノン (AQH2) によるものである. また, 後者はAQとAQH2間のelectron donor-acceptor (EDA) 相互作用によるものである. さらにPMMAとAQH2間には着色時に水素結合が形成さ…
Abstract This article discusses the forging processes and equipment and forging practice associated with the forging of magnesium alloys. It describes the workability of magnesium alloys. The article concludes with a discussion on the inspection of magnesium alloy forgings.