Materials Literature
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Structural capacitors, supercapacitors, and batteries are fabricated and tested, using modified materials and processes based on conventional fiber-reinforced polymer matrix composites. Printed circuit board prepregs are used to create structural capacitors that demonstrate good dielectric energy density and mechanica…
We prepared crystalline Ag nanocluster-incorporated electrodes using a radio frequency magnetron cosputtering system for use in thin-film micropseudocapacitors and investigated their structural and electrochemical properties. High-resolution electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy…
A new broadband wide-view circular polarizer is proposed for high transmittance multi-domain vertical-alignment liquid crystal displays (MVA LCDs). This configuration only requires one biaxial plate in the conventional circular polarizer. The optimal film parameters are obtained analytically through spherical trigonom…
A comparative study of oxidative decomposition behavior of a wide range of vegetable oils and its correlation to iodine value (IV) using thermogravimetric analysis (TGA) was described. The oxidative decomposition of saturated fatty acids shows weight loss before 385 degrees C while oxidative decomposition of unsaturat…
Negative refraction has been the subject of considerable interest and it may provide the possibility of a variety of novel applications. It arises in metamaterials that have simultaneous negative permittivity and permeability , where in-homogeneities are much smaller than the wavelength of the incoming radiation. Rece…
The possibility to prepare porous materials with controlled composition and porous structure using environmentally benign, readily available and cheap templates such as egg-derived scaffolds was explored. Different parts of the egg were used for the preparation of: (i) porous disks and beads of SiO2 and SiO2–Al2O3; (i…
Carbon nanosheets have recently evolved into useful edge emitters with high emission current densities, low threshold electric fields, and long lifetimes. In addition to further improvement in these characteristics, good stability and repeatability are also essential for these materials to be suitable for high vacuum…
The dynamic Young's modulus of elasticity and the dynamic piezomagnetic coefficient of magnetostrictive material are derived based on the nonlinear constitutive model of magnetostrictive material. Based on the equivalent circuit method, the relation between magnetoelectric effect of the laminated composite and the dyn…
Abrasion is the mechanical deterioration of fabric components by rubbing them against another surface. Abrasion ultimately results in the loss of performance characteristics, such as strength, but it also affects the appearance of a fabric [1]. Many parts of apparel, such as collar, cuffs and pockets, are subjected to…
The present paper discusses the feasibility of frequency analysis of X -ray reflectivity data, which have been used extensively to obtain information on density, layer thickness, surface and interface roughness for layered materials. So far, the experimentally obtained data have been analyzed by least squares fitting…
In the test of resisting seawater erosion,the durability of plain seawater concrete was studied considering the influence of seawater chemical composition on cementing ability,cement and sand.Furthermore,a long-term strength observation was carried out in its project application.We can substitute seawater concree with…
Size of nanoparticles can be predicted using a simple Scherrer relation, based on the width of X-ray diffraction (XRD) patterns of materials. In present paper we derive the Scherrer relation using a “multi slits interference” approach studied in basic physics course. We found the dependence of crystallites size on the…
The spray pyrolysis process was applied to prepare oxynitride phosphor , and the luminescence properties were investigated. The prepared particles had a green emission and good excitation characteristics in the region of 400–450 nm. The particles had an oxygen-rich phase . On the basis of the concentration quenching d…
BACKGROUND: Recently, we reported a unique approach to preserve the activity of some proteins in the presence of the denaturing agent, Sodium Dodecyl Sulfate (SDS). This was made possible by addition of the amphipathic solvent 2,4-Methyl-2-PentaneDiol (MPD), used as protecting but also as refolding agent for these pro…
The efficient implementation of metal nanoparticles in bioanalytical detection schemes, biological imaging and phototherapy requires these particles to be stable against aggregation and chemical desintegration. The functionalisation of these particles with specific (bio)molecular units is a further necessity. These re…
The mathematical framework required to account for a triple-phase boundary (TPB) and the accompanying surface transport was added to a two-dimensional numerical model of a mixed conducting thin film by considering appropriate kinetic rate and mass-transport expressions. Approximate parameters were chosen so that the m…
Abstract—We present a generally symmetrical circuit model to describe all kinds of metamaterials with effective permittivity and permeability. The model is composed of periodic structures whose unit cell is a general T-type circuit. Using the effective medium theory, we derive analytical formulations for the effective…
Multistep dehydriding reactions of magnesium borohydride Mg(BH4)2 were studied by Differential Scanning Calorimetry (DSC) measurements. The values of the enthalpy changes of the reactions from the measurements are in good agreement with those from first-principles calculations. Kinetically restricted dehydriding react…
Ultrafine fibers with diameters ranging from 50 to 300 nm were prepared from DNA/single-walled carbon nanotubes (SWNTs)/poly(ethylene oxide) blended dispersion. Well-defined electrospun fibers were obtained by good control of key dispersion properties related to electrospinning, such as ionic conductivity, surface ten…
The reaction of diamines or triamines with epoxidized oils leads to different reactions of intra/intermolecular cross-linking and the disruption of the ester linkage. However, by controlling the reaction conditions of temperature, stoichiometry and catalyst, production of oxirane rings without cross-linking and/or dis…