Materials Literature
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In previous papers [Wang, Q.; Li, X.; Wang, L.; Cheng, Y.; Xie, G. Ind. Eng. Chem. Res . 2005, 44 (2), 261−266; 2005, 44 (13), 4518−4522], a lumped kinetic scheme and a fractional kinetic model for the liquid-phase oxidation of p -xylene catalyzed by Co−Mn−Br was proposed and tested and the effect of water on the oxid…
Highly concentrated pastes of gold nanoparticles were successfully produced by using a special type of protective polymer and a mild reductant. The solid part of these pastes comprises up to 85wt% of gold nanoparticles, 10≈30 nm in diameter and a residual protective polymer. This component can be diluted at arbitrary…
We study experimentally the dynamics of the spontaneous rise of a meniscus made of polydimethylsiloxane of various viscosities on the outside of a micrometric fiber made of monofilament in polyethyleneterephthalate. Optical methods are used to measure simultaneously the height of the liquid interface and the associate…
A Comment on the Letter by Mark G. Kuzyk, The authors of the Letter offer a Reply.Received 1 March 2005DOI:https://doi.org/10.1103/PhysRevLett.95.109401©2005 American Physical Society
The oxidation behaviors of different grades of nuclear graphite—PAEB, PCEB, PPEA, and IG-11—were studied thermogravimetrically at 400, 800, and 1200°C as a part of work to select one grade of nuclear graphite for use in a gas turbine-modular helium reactor (GT-MHR). The results showed that all grades of nuclear graphi…
Abstract The electrochemical behavior of pure copper has been studied in aqueous environments using linear polarization and electrochemical impedance spectroscopy (EIS) techniques as a function of immersion time. The effect of pollutants (like chloride, sulfide and ammonium ions) on the nature of films formed on the c…
Abstract A new method for the preparation of compounds containing an azo‐dye moiety via opening the activated triazole ring upon coupling with nucleophiles was successfully applied to a mono‐triazole‐fused phthalocyaninato zinc complex 1 . The prepared unsymmetrical zinc‐phthalocyanine 3 conjugated with a 2‐hydroxy‐1‐…
A hybrid atomistic-continuum method is presented for incorporating Joule heating into large-scale molecular dynamics (MD) simulations. When coupled to a continuum thermostat, the method allows resistive heating and heat transport in metals to be modeled without explicitly including electronic degrees of freedom. Atomi…
The spectral behaviors of 4-n-pentyl-4'-cyanobiphenyl (5 CB) have been studied by means of temperature-dependent Raman spectros-copy in the range between --70 and 70 degrees C. The nu(C identical with N) bands in the Raman spectra were found splitting below the transition temperature from the solid to the nematic liqu…
Polyvinyl alcohol (PVA) is a water-soluble polymer, which is difficult to process in melt form owing to its poor processability and thermoplasticity. The thermoplastic polyvinyl alcohol (TPVA) prepared in this study is a brand new material for use in melt spinning. Satisfactory processability of TPVA can be obtained e…
We have used resonant Raman and absorption edge spectroscopy together with first-principle calculations in order to study the structure of GeS2 glasses (g-GeS2). The glasses were prepared under different melt temperatures and cooling rates, which are shown to significantly influence the g-GeS2 structure at the nano-sc…
ABSTRACT: This study was conducted to determine the feasibility of using corn zein as a natural gum base to be an alternative to the currently used synthetic gum base. The objectives were to (1) develop a corn zein chewing gum and (2) evaluate the taste, texture, and aroma qualities compared with synthetic gum base us…
129Xe and 131Xe nuclear magnetic resonance (NMR) spectroscopy was used to study the adsorption of xenon gas on as-produced single-walled and multi-walled carbon nanotubes. Overall, the adsorption was weak, with slightly stronger interaction between xenon and multi-walled nanotubes. Temperature-dependent spectra, relax…
Under similar test conditions, the electromigration reliability of Al and Cu interconnect trees demonstrate significant differences because of differences in interconnect architectural schemes. The low critical stress for void nucleation at the Cu and interlevel diffusion-barrier interface leads to varying failure cha…
Three Cu-precursors [Cu(hfac) 2 , Cu(DPM) 2 , and Cu(acac) 2 ] for supercritical fluid deposition (SCFD) were evaluated based on their adhesion strength onto a TiN underlayer for ULSI metallization. Although the fluorinated precursor, Cu(hfac) 2 , has the highest solubility in supercritical CO 2 among these three prec…
Atomic models for quasi-1D planar (nanostripe) and cylindrical (nanotube) nanostructures consisting of 1T and 2H TiS2 phases are suggested. By using a self-consistent band approach to the electron-density functional in the tight-binding approximation, specific features of the electronic spectrum of these nanostructure…
We have examined the colossal electro-resistance memory effect for the metal/La 2 CuO 4 ( M /LCO) junctions with M = Au, Ti, and Al. Among the junctions, the Ti and Al/LCO junctions exhibited hysteretic and nonlinear Schottky-like current–voltage characteristics, whose resistance could also be switched by pulsed volta…
This paper describes a theoretical approach to calculate the permeability tensor of polycrystalline ferrites in various magnetization states, from the completely demagnetized state to saturation. Demagnetizing dynamic fields related to the magnetic domain and grain shapes are introduced in the initial equations to des…
Abstract Both star‐shaped poly(ε‐caprolactone) (PCL) having 4 arms (4sPCL) and 6 arms (6sPCL) and linear PCL having 1 arm (LPCL) and 2 arms (2LPCL) were synthesized and then investigated for inclusion complexation with α‐cyclodextrin (α‐CD). The supramolecular inclusion complexes (ICs) were in detail characterized by…
Petroleum product pipelines in India are found to contain a large number of various types of microorganisms either aerobic or anaerobic and these microorganisms either directly or indirectly enhance corrosion. Field studies have been carried out by CECRI to investigate the corrosion problem in a cross-country pipeline…