Materials Literature
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To obtain lead-free 0.5Ba (Zr 0.2 Ti 0.8 )O 3 -0.5(Ba 0.7 Ca 0.3 )TiO 3 ceramics with excellent microstructure and electrical properties, BZT-BCT ceramics doping Mn 4+ and Nb 5+ was synthesized follow a conventional solid state reaction route. By means of SEM, XRD, quasi-static d 33 meter, the influence of sintering t…
The grain-boundary and its electrical characteristics in SrCoO 3 doped ZnO varistors were studied. The grain-boundary around ZnO-grain is probably composed of SrCoO 3 , and its electrical behavior is clearly different from two conventional types of Bi-and Pr-based ZnO varitors. The non-linearity and characteristic beh…
An oxide diluted magnetic semiconductor, Co doped ZnO thin film was successfully fabricated by cathodic electrodeposition method. X-ray diffraction studies demonstrate that the ZnCoO thin film indicates that the wurtzite structure. X-ray photospectroscopy studies suggested Co ions have a chemical valence of 2+. Optica…
Objective(s): This paper describes a selective and sensitive biosensor based on the dissolution and aggregation of aptamer wrapped single-walled carbon nanotubes. We report on the direct detection of aptamer–cocaine interactions, namely between a DNA aptamer and cocaine molecules based on near-infrared absorption at …
The methanol extracts of Terminalia chebula fruits as antibacterial agent and citric acid as a crosslinking agent have been applied on cotton plain woven fabric and the treated fabrics are then tested for antibacterial activity against bacterial strains like Staphylococcus aureus and Escherichia coli, under agar diffu…
The effect of explosive pressing on a powder of Forum ultrafine polytetrafluoroethylene (UPTFE) is studied. It is found that the processing leads to the formation of a crust on the surface of the sample; its morphology and phase and chemical composition differ from those of the original sample. Regions of flattened pa…
This work aims to investigate the hydration behavior and structural properties of two dioctahedral smectites with contrasting location charge (beidellite SbId-1 and montmorillonite SWy-2) according to the nature of the bivalent compensator heavy metal cations (i.e. Hg (II), Ni (II), Ba (II) and Mg (II)). This study is…
Dealing with increasing power densities in high performance micro- and power -electronics applications is continuously becoming more challenging. Many applications today need thermal interface materials (TIMs) that can offer significantly higher performance than what is currently available. One of the main challenges…
An algorithm and a computer program that can be used in the search for all possible periodic packings of a specified set of polyominoes with a specified packing factor have been developed. The algorithm is based on the method of discrete modeling of molecular packings.
We investigated how poly(vinylpyrrolidone) (PVP) suppresses crack generation during fabrication. It was confirmed that PVP plays the role of a stress-relaxing agent by in situ stress development measurement at temperatures from 200 to 300 °C. We found that PVP in the film was removed in two steps and that the residual…
Dynamic crystallization (DC) is a new characterization technique for measuring the chemical composition distribution (CCD) of semicrystalline copolymers. This technique fractionates polymers based on chain crystallizabilities under a constant cooling rate; a solvent is also fed through the column at a constant flow ra…
In order to investigate the hydrogenation of intermetallic compounds, a gas pressure cell for in situ neutron powder diffraction based on a sapphire crystal tube was constructed. By proper orientation of the single crystal Bragg peaks of the container material can be avoided, resulting in a very low diffraction backgr…
We discuss the doping effect of Sn 2+ on ATiO 3 perovskites by comparing with those of Pb and Ba. The solution energy of Sn into A sites of ATiO 3 perovskites shows minimum when the lattice size is almost the same as that of SrTiO 3 (STO), as determined by first-principles calculations. In dielectric measurements of t…
The objective of the current work is to study the effect of plasma treatment of rice husk (RH) to reduce the water absorption of natural filler (RH) reinforced unsaturated polyester matrix composite. RH was treated by low-pressure radio frequency plasma in a capacitively coupled plasma reactor at room temperature usin…
Abstract Advanced silica/lignosulfonate composites were obtained using magnesium lignosulfonate and silica precipitated in a polar medium. For comparative purposes analogous synthesis was performed using commercial silica Aerosil ® 200. Lignosulfonates are waste products of paper industry and their application in new…
Interaction of citrus pectin with cefotaxime and 4-methyl-5-oxymethyluracyl was studied by spectrophotometric methods. New film coatings with these medicinal preparations for mesh implants were produced on the basis of the citrus pectin-polyvinyl alcohol matrix. It was demonstrated that supramolecular formations of th…
With the technological development of the chemical synthesis industry, polymeric insulation, especially extruded material, gradually replaces traditional paper-insulated lead covered (PILC) cable to become a popular type of cable. Among potential candidates, XLPE has become a popular material because of its excellent…
This work presents the results of obtaining the sulfur nanoparticles, which can be used in agriculture as a fungicide. Sulfur nanoparticles were obtained by modifying the surface of sulfur using various surfactants including cetyltriammoniumbromide (CTAB), sodium dodecylbenzene sulfanate (SDBS) and Triton X-100 (TX-10…
The unbalanced temperature distribution influences the power output of thermoelectric generator (TEG) system, which leads to mismatch power among TEG modules. This mismatch power degrades the energy efficiency of TEG systems based on the series-connected TEG modules. A hybrid centralized-distributed (HCD) power condit…
Modeling and experimental studies of the spatial distributions of the field and flux inside and above the surface of ferromagnetic plates of different dimension types, which were locally magnetized by U-shaped electromagnets, were performed. It was established that the location of a magnetic inhomogeneity in the inter…