International Journal of Materials Science and Applications

Volume 2, Issue 2, March 2013

  • Dye-Sensitized Solar Cells Using Fresh and Dried Natural Dyes

    Sofyan A. Taya, Taher M. El-Agez, Hatem S. El-Ghamri, Monzir S. Abdel-Latif

    Issue: Volume 2, Issue 2, March 2013
    Pages: 37-42
    Received: 17 February 2013
    Accepted:
    Published: 10 March 2013
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    Abstract: Different natural dye extracts have been prepared and used as sensitizers in the fabrication of dye-sensitized solar cells (DSSCs). These dyes have been extracted from both fresh and dried raw materials. The absorption spectra of these dyes have been investigated by UV-VIS spectrophotometry. DSSCs were assembled using TiO2 and ZnO nanostruc-tured, ... Show More
  • Optoelectronic Properties of Improved GaN Semiconductor on Si(111) Using Growth Approaches And Different Interlayer’s

    Bablu K. Ghosh, Ismail Saad, Akio Yamamoto

    Issue: Volume 2, Issue 2, March 2013
    Pages: 43-46
    Received: 10 March 2013
    Accepted:
    Published: 10 March 2013
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    Abstract: The crystalline quality of wider direct band gap semiconductor (3.4 eV) hexagonalGaN(h-GaN)epilayer grown on Si(111) is evaluated by using different growth approaches and interlayer’s. The investigations of GaNepilayer crystal quality for the template of converted porous GaN layer formed by novel nitridation process of thin (2 and 0.5μm) GaAs laye... Show More
  • A GTEM Chamber Design with Frequency Flexibility Using Metamaterial Concepts on the Septum

    Humberto X. Araujo, Humberto X. Araujo, Luiz Carlos Kretly

    Issue: Volume 2, Issue 2, March 2013
    Pages: 47-55
    Received: 21 February 2013
    Accepted:
    Published: 10 March 2013
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    Abstract: In this work it is shown the strategy of use metamaterial technology to improve the GTEM chamber performance. The analysis and characterization of different types of metamaterial patterns, such as fractal cells, Jerusalem-Cross-Pair, SRR – Split Ring Resonator and CSRR – Complementary Split Ring Resonator printed on the septum of a GTEM chamber was... Show More
  • Effect of Cryogenic Treatment on Microstructure and Wear Characteristics of AISI M35 HSS

    D. Candane, N. Alagumurthi, K. Palaniradja

    Issue: Volume 2, Issue 2, March 2013
    Pages: 56-60
    Received: 06 March 2013
    Accepted:
    Published: 10 March 2013
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    Abstract: Cryogenic treatment has been widely acknowledged as a means of improving wear resistance of tool materials. A Comparative study on conventionally heat treated and cryogenic treated AISI M35 grade high-speed steel specimens has been presented in this paper. Specimens initially subjected to conventional heat treatment at austenitizing temperature of ... Show More
  • Love Wave Propagation in Electro-Magneto Non-Homogeneous Elastic Media

    Shikha Kakar, Rajneesh Kakar

    Issue: Volume 2, Issue 2, March 2013
    Pages: 61-67
    Received: 17 February 2013
    Accepted:
    Published: 10 March 2013
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    Abstract: A mathematical approach is taken to investigate Love wave propagation in non-homogeneous electro-magneto-elastic media. The elastic media is assumed to be initially unstressed and at rest. In this study, it is assumed that mass density , elastic coefficients , dielectric coefficients magnetic permeability coefficients , piezoe-lectric coefficient... Show More
  • Electrocodeposition and Characterization of Ni-WC Composite Coating From Non – Aqueous Bath

    Dhananjay kumar Singh, Manoj Kumar Tripathi, V. B. Singh

    Issue: Volume 2, Issue 2, March 2013
    Pages: 68-73
    Received: 14 February 2013
    Accepted:
    Published: 10 January 2013
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    Abstract: Composite coating of tungsten carbide (WC) in the matrix of nickel has been achieved by direct current (DC) electrodeposition technique using a non aqueous bath. The deposition parameters such as current density, bath temperature, and stirring rate were maintained at constant levels for all the coating configurations. The composition of the coating... Show More
  • Zno Nano-Stripes Synthesized using Photoelectrochemical Wet Etching Method

    L. S. Chuah, Asmiet Ramizy, M. A. Mahdi, Z. Hassan

    Issue: Volume 2, Issue 2, March 2013
    Pages: 74-77
    Received: 04 April 2013
    Accepted:
    Published: 10 March 2013
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    Abstract: To date, no approaches have been reported to fabricate the ZnO nano-stripes arrays on zinc foil substrate. In this method, zinc (Zn) foil was applied as substrates. The ZnO nano-stripes arrays on zinc foil substrate were prepared via photoelectrochemical (PEC) wet etching method without using templates and catalysts. To prepare ZnO nano-stripes ... Show More