Browsing by Author "Ayu Wazira, Azhari"

Now showing items 21-35 of 35

    • Numerical analysis of bifacial solar cell using PC1D software 

      Suhaila, Sapeai; Mohamad Yusof, Sulaiman; Mohd Khairunaz; Ayu Wazira, Azhari; Kamaruzzaman, Sopian; Saleem Hussain, Zaidi (Institute of Electrical and Electronics Engineers Inc., 2013-06)
      Computer-based simulations play a critical role in the design, development, and functionality of solar cells. Device modeling techniques substantially reduce the time and costs through optimization of process steps, choice ...

    • Optical characterization of SixGe1-x films grown on nanostructured Si substrates 

      Ayu Wazira, Azhari; Adnan K Shafeeque, Ali; Kamaruzzaman, Sopian; Saleem Hussain, Zaidi; Uda, Hashim (Institute of Electrical and Electronics Engineers Inc., 2014-10-15)
      High quality Ge and SixGe1-x films grown on Si substrates are attractive for a wide range of applications in optics, optoelectronics, and high efficiency solar cells. In this study, heteroepitaxial growth of Ge on ...

    • Optimization of silver-assisted nano-pillar etching process in silicon 

      Ayu Wazira, Azhari; Kamaruzzaman, Sopian; Mohd Khairunaz, Mat Desa; Saleem Hussain, Zaidi (Elsevier, 2015-12-01)
      In this study, a respond surface methodology (RSM) model is developed using three-level Box-Behnken experimental design (BBD) technique. This model is developed to investigate the influence of metal-assisted chemical etching ...

    • Organic pollutants removal from diluted palm oil mill effluent (POME) through Sono–Fenton–nZVI process 

      Mohd Raihan, Taha, Prof. Dr.; Abdul Haqi, Ibrahim; Ayu Wazira, Azhari; Mahyun, Ab Wahab (Universiti Malaysia Perlis (UniMAP), 2012-06-18)
      In this study, an advance Fenton process called sono-Fenton-nZVI process was used to remove organics content from palm oil mill effluent (POME). Factors such as pH, sonication intensity and sonication time were studied in ...

    • PC1D analysis of thin-film crystalline SixGe1-x/Si solar cells 

      Adnan K Shafeeque, Ali; Ayu Wazira, Azhari; Samir, Ahmad; Kamaruzzaman, Sopian; Saleem Hussain, Zaidi (Institute of Electrical and Electronics Engineers Inc., 2014-10-15)
      Inability to achieve complete optical absorption in thin-film crystalline Si (TF c-Si) solar cells fundamentally limits efficiency. Therefore, materials with high absorption across the entire solar spectrum are highly ...

    • The potential of satellite images in soil compaction study for implementation of precision agriculture 

      Norasmanizan, Abdullah; Ayu Wazira, Azhari; Mahmad Nor, Jaafar, Assoc. Prof. Dr.; Mohd Sabri, Hussin; Salwa, Mohd Zaini Makhtar (Universiti Malaysia Perlis (UniMAP), 2012-06-18)
      This paper observed the potential of satellite imagery in soil compaction study based on the spectral analysis. The aim of this study is to produce the potential of soil compaction map through the measuring compactness ...

    • Production of Building Bricks from Fly Ash 

      Ayu Wazira, Azhari; Abdul Haqi, Ibrahim; Mahyun, Ab Wahab; Salwa, Mohd Zaini Makhtar; Ragunathan Santiagoo (School of Environmental Engineering, 2008-01-09)

    • Recent graphene oxide/TiO₂ thin film based on self-cleaning application 

      A. Azani; Dewi Suriyani, Che Halin; Kamrosni, Abdul Razak; Mohd Mustafa Al Bakri, Abdullah; Mohd Arif Anuar, Mohd Salleh; Norsuria, Mahmed; Muhammad Mahyiddin, Ramli; Ayu Wazira, Azhari; Chobpattana, V. (IOP Publishing Ltd, 2019-08)
      Graphene oxide/TiO₂ (GO/TiO₂) thin films works as self-cleaning device have been developed in various method onto selected substrates. It was noticeable that graphene oxide is the best form in the group of graphene family. ...

    • Recycling potential of waste materials as fire resistance material 

      Ayu Wazira, Azhari; Abdul Haqi, Ibrahim; Mahyun, Ab Wahab; Salwa, Mohd Zaini Makhtar; Azmil, Mohd Aris (Universiti Teknologi Malaysia (UTM), 2009-06-02)
      In this paper, the possibility of using waste materials as a major component for the manufacturer of thermal insulating elements is was studied. It is believed that the use of fly ash combined together with red gypsum which ...

    • Response surface methodology (RSM) in fabrication of nanostructured silicon 

      Ayu Wazira, Azhari; Kamaruzzaman, Sopian; Dewi Suriyani, Che Halin; Abdul Haqi, Ibrahim; Saleem Hussain, Zaidi (Trans Tech Publications Ltd, 2016)
      In this paper, a respond surface methodology (RSM) model has been developed using three levels Box-Benkhen experimental design (BBD) technique to study the influence of several metal-assisted chemical etching (MACE) process ...

    • Reusability of concrete sludge in sand brick 

      Abdul Haqi, Ibrahim; Z., N. Aini; Ayu Wazira, Azhari; Mahyun, Ab Wahab; Salwa, Mohd Zaini Makhtar; A. R., Asri (Universiti Sains Malaysia (USM), 2009-06-01)
      In this study, bricks manufactured from dried concrete sludge collected from a concrete batching plant were investigated. Five different series of sludge proportioning ratios were studied, which exclusively involved the ...

    • Role of micro and nanostructures in enhancing near IR optical absorption in Silicon 

      Cheow Siu, Leong; Ayu Wazira, Azhari; Kamaruzzaman, Sopian; Saleem Hussain, Zaidi (Institute of Electrical and Electronics Engineers Inc., 2014-10-15)
      Role of micro and nanostructures in enhancing IR transmission in Si wafers has been investigated. Based on feature dimensions, incident light interaction can be described in terms of: (a) geometrical optics for wavelengths ...

    • Synthesis and characterization of self-assembled, high aspect ratio nm-scale columnar silicon structures 

      Ayu Wazira, Azhari; Boon Tong, Goh; Suhaila, Sapeai; Mohd Khairunaz; Kamaruzzaman, Sopian; Saleem Hussain, Zaidi (Institute of Electrical and Electronics Engineers Inc., 2013-06)
      The aim of this work is to synthesize nm-scale columnar structures in Si principally for solar cell applications. These structures are also desirable as templates for heteroepitaxial growth of SixGe1-x. A nanostructured ...

    • Synthesis and charactherization of TiO₂ doped SnO₂ thin film prepared by sol-gel method 

      Dewi Suriyani, Che Halin; Kamrosni, Abdul Razak; Azliza, Azani; Mohd Mustafa Al Bakri, Abdullah; Mohd Arif Anuar, Mohd Salleh; Norsuria, Mahmed; Nur Syahirah, Shafee; Muhammad Mahyiddin, Ramli; Ayu Wazira, Azhari; Chobpattana, Varistha (IOP Publishing Ltd, 2019-12)
      In this work, preparation of titanium dioxide doped with tin oxide, SnO₂/TiO₂ thin films deposited onto silicon wafer via sol-gel method. Different amount of SnO₂ was added (5 ml, 10ml and 15 ml) into parent solution. The ...

    • The utilization of coal fly ash and red gypsum as fire insulation product 

      Ayu Wazira, Azhari; Azmil, Mohd Aris; Abdul Haqi, Ibrahim; Salwa, Mohd Zaini Makhtar; Mahyun, Ab Wahab (Universiti Malaysia Pahang, 2009-06-20)
      In this paper, the thermal, mechanical and optical properties of mortars mainly composed of coal fly ash and red gypsum are studied with the aim of analyzing the fire resistance and mechanical strength characteristics of ...