Materials Literature
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In order to evaluate the possibility of three-dimensional (3D) architecture of rechargeable lithium ion batteries, three dimensionally ordered macroporous (3DOM) Ti O 2 film electrodes have been prepared by a colloidal crystal templating approach. X-ray diffraction, scanning electron microscopy, cyclic voltammetry, an…
The elastic constants are approximately determined using a multi-step linear approximation method for more accurate material nonlinear analysis of coated fabric membrane structures. The approximate determination is performed within each quadrilateral or triangular surface defined on the surfaces of the biaxial elongat…
Colloidal lithography and embossing master are new techniques of producing nanotopography, which have been recently applied to improve tissue response to biomaterials by modifying the surface topography on a nano-scale dimension. A natural polyester (Biopol), 8% 3-hydroxyvalerate-component (D400G) and a conventional b…
A potential anti-cancer drug-delivery polymeric micelle system with an in vitro degradation half-life of about 48 h that releases its drug upon application of ultrasound was synthesized. This vehicle was composed of an amphiphilic co-polymer, poly(ethylene oxide)-b-poly(N-isopropylacrylamide-co-2-hydroxyethyl methacry…
The evident influence of the reduction in particle size to nanometric dimensions on many properties of polymeric dielectric composites emphasises the role of the filler particle-matrix interface. The interfacial environment itself, which is also of nanometric dimensions, can be dominant in determining the properties o…
While the main goal of the first part of this study was to check the applicability of the Tsai–Hill equation to a polymer-polymer microfibril reinforced composite (MFC), in which the reinforcing elements represented microfibrils with a diameter around 1–3 μm and aspect ratio of about 100, in the present paper a simila…
Electrochemical behavior of the oxygen reduction reaction on La 0.72 Sr 0.18 Mn O 3 ∕ Y 2 O 3 - Zr O 2 (LSM/YSZ) composite and Gd-doped Ce O 2 (GDC)-impregnated LSM electrodes was investigated in the absence and presence of a Fe-Cr alloy at 900 ° C in air. The results indicate that for the O 2 reduction on the LSM-bas…
We perform molecular dynamics simulations of azobenzene containing side-chain liquid crystalline polymer subject to an external model field that mimicks the reorientations of the azobenzenes upon irradiation with polarized light. The smectic phase of the polymer is studied with the field applied parallel to the nemati…
Freeze-drying was used to prepare nanocrystalline powders of , , with high-purity and crystallite sizes in the range . These powders were used to obtain ceramic samples with in average diameter by firing at , without sintering additive, and for samples sintered at , with previous addition of cobalt nitrate solution to…
High aspect ratio (>500), neat poly(ethyl 2-cyanoacrylate) nanofibers were synthesized catalytically by vapour phase polymerization under high relative humidity and ambient conditions.
An aqueous route for producing nanopowders of intermetallic compounds is presented.The method was developed to produce powders of PrPt 2 and CePt 2 for use as anode electrocatalysts in porous direct ethanol polymer electrolyte membrane ͑PEM͒ fuel cell anodes.Powders that are relatively pure with average particle diame…
The adsorption of cationic and anionic collectors on the surface of smithsonite was studied using diffuse reflectance FTIR (DRIFT) and X-ray photoelectron spectroscopy (XPS or ESCA) techniques.
Poly(amidoamine) (PAMAM) dendrimers of different generations with carboxyl, acetyl, and hydroxyl terminal groups and a folic acid (FA)-dendrimer conjugate were separated and analyzed using reverse-phase high performance liquid chromatography (HPLC). Analysis of both the individual PAMAM derivatives and the separation…
The exact nature of the relationship between high-density (HDA) and very-high-density (VHDA) amorphous ice is unknown at present. Here we review the relation between HDA and VHDA, concentrating on experimental aspects and discuss these with respect to the relation between low-density amorphous ice (LDA) and HDA. On co…
Physical models are presented for single- and multi-wall carbon nanotubes. The models are used to quantify the performance enhancements that they can potentially offer if used as interconnects in GSI chips. For short lengths, mono-layer SWCN interconnects can lower capacitance by 50% whereas for long lengths SWCN-bund…
New fluorovinylene aromatic ether polymers, possessing dual reactivity, have been successfully prepared via the step-growth polymerization of commercial bis(trifluorovinyl) aromatic ethers and bisphenols.
The hydrothermal reaction of 5-hydroxyisophthalic acid (H3L) and lead and nickel nitrates produced a heterometallic polymer [Pb6Ni(mu3-OH)8(La)2]n containing heptanuclear [Pb6Ni(mu3-OH)8]6+ units and a homometallic complex {[Pb(Lb)(H2O)].(H2O)0.25}n consisting of one-dimensional lead-oxide chains: evidently, the La an…
Phosphonated porphyrin frameworks that are porous to an electron-accepting perylenediimide are systematically interdigitated with a phosphonated form of the diimide to form bulk heterojunctions. When employed in photovoltaics, these molecularly interlaced heterojunctions provide large junction areas while retaining th…
The historical understanding of polyphase silicon nitride, abbreviated throughout as SiN, has been a multidisciplinary effort that contributed to the sophistication of Ceramic Science over the last 50 years. This understanding and the development of SiN leading to significantly improved properties has been linked by u…
Optimizing endothelial cell growth and adhesion on the surface of metallic stents implanted in the vascular system is a fundamental issue in understanding and improving their long-term biocompatibility. The ability of the endothelial cell to attach and adhere to the luminal stent surface as well as the capacity to wit…