Materials Literature
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Nanotechnology has the potential to greatly impact the wood protection industry through the creation of nanomaterials with unique properties. Nanobiocides may find applications as co-biocides, or may alter treatability properties such as penetration and biocide distribution. Nanocarrier delivery systems may increase t…
We introduce a class of sub-linear scaling algorithms for analyzing the electronic structure of crystalline solids with isolated defects. We divide the localized orbitals of the electrons into two sets: one set associated with the atoms in the region where the deformation of the material is smooth (smooth region), and…
The electrochemistry of the Dawson-like sulfite polyoxometalate anion alpha-[Mo18O54(SO3)2]6-, derived from the TEAH6{alpha-[Mo18O54(SO3)2]} salt (TEAH+ is the triethanolammonium cation; pKa=7.8), has been investigated in aqueous media using cyclic and rotated disk voltammetry at glassy carbon electrodes and bulk elec…
The interaction of atomic oxygen and nitrogen on the (0001) surface of corundum (alpha-alumina) is investigated from first-principles by means of periodic density functional calculations within the generalized gradient approximation. A large Al(2)O(3) slab model (18 layers relaxing 10) ended with the most stable alumi…
In this letter, a left-handed artificial dielectric is proposed . Using resonating broadside coupled patches to generate a negative permeability and thin strips to generate negative permittivity, a negative index of refraction that is matched to free space can be designed. The structure is fabricated from a single die…
The paper deals with a study of tensile strength and disintegration time of compacts made from silicified microcrystalline celluloses, Prosolv SMCC 90, and Prosolv HD 90, in dependence on compression force, addition of two types of lubricants, and two active ingredients. The lubricants were magnesium stearate and sodi…
We present the first ultrahigh vacuum (UHV) surface study of single-grain icosahedral Ag–In–Yb quasicrystal by using X-ray photoelectron spectroscopy (XPS), reflection high-energy electron diffraction (RHEED), and scanning tunnelling microscopy (STM). This new quasicrystal is found to exhibit surfaces with steps and t…
Buried aluminum/polymer interfaces were studied using a spectroelectrochemical experimental setup based on simultaneous in situ attenuated total reflection Fourier transform infrared spectroscopy ͑ATR-FTIR͒ and electrical impedance spectroscopy ͑EIS͒.Transport of water and electrolyte through the polymer film to the a…
Composites based on high density polyethylene (HDPE), pine flour, and organic clay were made by melt compounding and injection molding. The influence of clay on crystallization behavior, mechanical properties, water absorption, and thermal stability of HDPE/pine composites were investigated. The HDPE/pine composites c…
The surface modification reaction was applied to the spherical nanoparticles of an elasticoluminescent material, europium-doped strontium aluminate, to improve the water-resistant property. The superior resistibility of the resulting material against water treatment was proved by scanning electron microscopy, photolum…
The plasma polymerization technique was used to surface modify glass fibers in order to form a strong but tough link between the glass fiber and the polyester matrix, and enable an efficient stress transfer from the polymer matrix to the fiber. Plasma polymer films of hexamethyldisiloxane, vinyltriethoxysilane, and te…
Implanted scaffold materials induce an inflammatory reaction known as the 'foreign body reaction' (FBR). We hypothesized that the observed difference in FBR between rats and mice correlate with different expression dynamics of cytokines and chemokines, which are key orchestrators of the FBR. After implantation of hexa…
A method to search for local structural similarities in proteins at atomic resolution is presented. It is demonstrated that a huge amount of structural data can be handled within a reasonable CPU time by using a conventional relational database management system with appropriate indexing of geometric data. This method…
An electron gun constructed using carbon-nanofiber (CNF) emitters and an electrostatic Einzel lens system has been characterized for the development of a high-resolution x-ray source. The CNFs used were grown on tungsten and palladium tips by plasma-enhanced chemical-vapor deposition. Electron beams with the energies…
Anode-supported planar solid oxide fuel cells (SOFCs) were successfully fabricated employing a single-step cofiring process. The cells were comprised of a -stabilized zirconia (YSZ) anode, a YSZ electrolyte, a Ca-doped cathode active layer, and an LCM cathode current collector layer. The fabrication process involved t…
In the present study, chopped henequen natural fibers without and with surface modification by electron beam (E-beam) treatment were incorporated into a polypropylene matrix. Prior to composite fabrication, a bundle of raw henequen fibers were treated at various E-beam intensities from 10 kGy to 500 kGy. The effect of…
Recently, Troy Polymers, Inc. developed a chemical process for recycling of polyurethane foam scrap from shredder residue into polyols for polyurethanes (Sendijarevic, V. (2004). Process for Chemical Recycling of Polyurethane-containing Scrap, U.S. Patent No. 6,750,260 (assigned to Troy Polymers, Inc. and Polyventure,…
The influence of 2D confinement of alumina nanochannels on the assembly of spherical micelles formed from block copolymers was investigated by analysing their replicas in mesoporous silica. It could be shown that spherical micelles follow assembly patterns similar to those of hard spheres under cylindrical confinement…
We have described a simple approach to the transition temperature engineering in metal-free mesogenic octaalkoxycarbonyl phthalocyanines Pc(COOR)8. The method is based on the esterification of a common octaacid precursor with binary mixtures of alcohols. Variation of the length of alkyl chain and the ratio of componen…
The main objective of the present investigation was to increase the photoluminescence and color chromaticity of -doped Sr-borate phosphors by adding co-dopants. Among the co-dopants used, which included Ce, Mn, Eu, Mg, Zn, Ca, and Ba, the co-doping of europium and samarium was effective in improving the luminescence a…