Advances in Materials

Volume 3, Issue 6, December 2014

  • Influence of Barium Doping on Physical Properties of Zinc Oxide Thin Films Synthesized by SILAR Deposition Technique

    Kekeli N’Konou, Yendoubé Lare, Muthiah Haris, Mazabalo Baneto, Komi A. Amou, Kossi Napo

    Issue: Volume 3, Issue 6, December 2014
    Pages: 63-67
    Received: Nov. 13, 2014
    Accepted: Nov. 19, 2014
    Published: Nov. 27, 2014
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    Abstract: Undoped and Barium (Ba) doped ZnO thin films were deposited on glass substrates by successive ion layer adsorption and reaction (SILAR) method using zinc acetate, barium chloride and ammonium hydroxide solution. In the present work the effect of Barium doping on structural, optical and morphological properties were investigated. Structural characte... Show More
  • Characterazation of Unmodified and Chemically Modified Coal Samples by Nitrogen Adsorption at 77k, and Investigation of their Interaction with Sulphur Dioxide, (SO2), a Known Pollutant

    Nadiye-Tabbiruka M. S., Unaye Masiya, Salamula, E. J., Obuseng V., Ngila J. C.

    Issue: Volume 3, Issue 6, December 2014
    Pages: 68-74
    Received: Nov. 25, 2014
    Accepted: Dec. 04, 2014
    Published: Dec. 18, 2014
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    Abstract: Samples of modified and fresh coal from Morupule, in Botswana, were characterized by nitrogen adsorption at 77 K and found to be micro porous materials, with the modified sample having a higher specific surface area (SBET = 282.0 m2/g) which is 19 times that of the original sample. Modification by activation increased the average pore radius slight... Show More
  • Electrical Property of Laser-Sintered Nanopastes with Reduced Metal Nanoparticles Prepared by Laser Ablation in Liquids

    Taku Saiki, Yukio Iida, Kennan Ri, Marina Yoshida, Yuuki Koga

    Issue: Volume 3, Issue 6, December 2014
    Pages: 75-88
    Received: Dec. 01, 2014
    Accepted: Dec. 09, 2014
    Published: Dec. 18, 2014
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    Abstract: Reduced iron, aluminum, copper, and magnesium nanoparticles were produced from iron oxide (Fe3O4), aluminum oxide (Al2O3), copper oxide (CuO), and magnesium oxide (MgO) powders by using laser ablation in liquids, and nanopastes were synthesized with the reduced iron, aluminum, copper, and magnesium nanoparticles. The nanopastes were sintered by usi... Show More
  • Orientational Behavior of Liquid-Crystalline Polymers with Amide Groups

    Genichiro Shimada, Masanori Nata, Shiori Tomitaka, Seiji Ujiie

    Issue: Volume 3, Issue 6, December 2014
    Pages: 89-93
    Received: Dec. 07, 2014
    Accepted: Dec. 25, 2014
    Published: Jan. 06, 2015
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    Abstract: Liquid-crystalline polyacrylamides with mesogenic side-chains were synthesized by the radical polymerization of a mesogenic acrylamide derivative. Their thermal properties and orientational behavior were examined by polarizing microscopy, differential scanning calorimetry, temperature-variable IR, and X-ray diffraction measurements. The liquid-crys... Show More