Browsing Researchers by Subject "ZnO"

Now showing items 1-10 of 10

    • Analysis of particle size and XRD in ZnO-based varistor 

      Noor Azira, Mohd Noor; Mohabattul Zaman B. S., NS Bukhari, Prof Madya; Muhammad Asri, Idris; Noor Mariamadzliza, Mohd Nan (Universiti Malaysia PerlisSchool of Materials Engineering & School of Environmental Engineering, 2010-06-09)
      ZnO varistors doped with Bi2O3, Sb2O3, CoO, MnO2 and Cr2O3 were prepared separately by two mixing processes: conventional and masterbatching mixed-oxide process method. After the mixing process, the ZnO-based varistor ...

    • Brief review on ZnO Synthesis methods, thin film & nanowire gas sensors 

      M., Kashif; Uda, Hashim, Prof. Dr. (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      ZnO nanowires are ideal building blocks for a wide range of nanoscale electronics, optoelectronics, and chemical sensing devices. The material properties change when the material is in nanowire form as compare to thin film ...

    • COD removal from semi-aerobic landfill leachate 

      Salwa, Mohd Zaini Makhtar; Naimah, Ibrahim; Mohammad Tamizi, Selimin (Universiti Teknologi Malaysia (UTM), 2009-06-02)
      Leachate are heavily polluted liquid which may contain large amount of chemical oxygen demand (COD), biological chemical demand (BOD), ammonia (NH3) and colour. This study was conducted to examine the percentage of COD ...

    • Effects of reaction time on the morphological, structural, and gas sensing properties of ZnO nanostructures 

      Shahid, Hussain; Tianmo, Liu; Muhammad Kashif, Muhammad Faroow; Lin, Liyang; Wu, Shufang; Weiwei, Guo; Wen, Zeng; Uda, Hashim, Prof. Dr. (Elsevier, 2014-02)
      Morphological transformation was achieved from ZnO hexagonal needle-like rods to hexagonal flower-like rods by varying the reaction growth time using the hydrothermal method. Optical bandgap energies were calculated from ...

    • Morphology and optical investigations of ZnO pyramids and nanoflakes for optoelectronic applications 

      N. K., Hassan; M. Roslan, Hashim; Yarub, Al - Douri (Elsevier, 2014-06)
      Zinc-oxide (ZnO) pyramidal and nanoflakes were grown by electrochemical deposition of Zn(NO3)2·6H2O on n-type Si substrate with different crystallographic orientations and on indium tin oxide (ITO)-coated glass. Various ...

    • Performance of hexagon Au electrode on ZnO thin film schottky diode gas sensor 

      Mas Elyza, Mohd Azol; Mahnaz, Shafiei, Dr.; Loew,  Pei Ling, Dr.; Foo, Kai Loong; Uda, Hashim, Prof. Dr.; Rashidah @ Siti Saedah, Arsat, Dr. (International Frequency Sensor Association (IFSA), 2013)
      This paper presents an analysis of Schottky diode performance with the utilization of zinc oxide (ZnO) thin film as a gas sensor. The presented device is implemented with new type of electrode shape which is hexagon compared ...

    • Removal of colour from landfill by solar photocatalytic 

      Salwa, Mohd Zaini Makhtar; Ibrahim, N.; Mohammad Tamizi, Selimin (Asian Network for Scientific Information, 2010)
      This study was conducted to examine the percentage of colour removal using coagulation as pretreatment, followed by the effects of ZnO, pH, stirring time and solar photocatalytic as final treatment. The duration of ...

    • Sol-gel synthesis of ZnO nanorods for ultrasensitive detection of acetone 

      Muhammad Kashif, Muhammad Faroow; Md. Eaqub, Ali, Dr.; Syed Muhammad Usman, Ali Shah, Dr.; Foo, Kai Loong; Uda, Hashim, Prof. Dr.; Willander, Magnus (American Scientific Publishers, 2013-12)
      ZnO nanorods were synthesized on low cost thermally oxidized silicon substrate using a simple and easily performable sol-gel spin coating technique followed by hydrothermal growth. C-axis orientation, good crystalline ...

    • Structural and impedance spectroscopy study of Al-doped ZnO nanorods grown by sol-gel method 

      Muhammad, Kashif; Uda, Hashim, Prof. Dr.; Md. Eaqub, Ali; Ala'eddin Ahmad Jaber, Saif, Dr.; Syed Muhammad Usman, Ali; Willander, Magnus, Prof (Emerald Group Publishing Limited, 2012)
      Purpose – The purpose of this paper is to investigate the electrical transport mechanism of the Al-doped ZnO nanorods at different temperatures by employing impedance spectroscopy. Design/methodology/approach – Al-doped ...

    • Study of ZnO thin film on silicon substrate by sol-gel spin coating method for bio-medical application 

      Foo, Kai Loong; Mohammad, Kashif; Uda, Hashim, Prof. Dr.; Syed Muhammad Usman, Ali Shah, Dr.; Willander, M., Prof. (Institute of Electrical and Electronics Engineers (IEEE), 2012-02-27)
      Transparent semiconductor ZnO thin films deposited on p-Si (100) substrates with different solvent (Methanol and Ethanol) were obtained by sol-gel method. The coated ZnO films were annealed in furnace at 500°C for 2 hours. ...