Browsing Muhammad Asri Idris, Associate Professor Dr. by Title

Now showing items 1-13 of 13

    • 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 ...

    • A cylindrical Barium Strontium Titanate (BST) dielectric resonator antenna for 5.0 GHz wireless LAN application 

      Azremi, Abdullah Al Hadi; Saidatul Norlyana, Azemi; Soh, Ping Jack; Muhammad Asri, Idris; Norsuria, Mahmed (Institute of Electrical and Electronics Engineering (IEEE), 2008-05-19)
      This paper presents a dielectric resonator antenna (DRA) suitable for wireless communication applications at 5.0 GHz. The proposed DRA utilizes a ferroelectric material, Barium Strontium Titanate (BST) in cylindrical form ...

    • Determination of crystal changes on sodium cobaltite (NaCo 2O4) by Reitveld analysis as a suitability function in thermoelectric materials 

      Muhammad Asri, Idris; Murizam, Darus; Norsuria, Mahmed (American Institute of Physics, 2010-03-11)
      Sodium Cobaltite, NaCo2O4 has been studied extensively as a new thermoelectric material. The cobalt oxide position in each sodium unit cell may determine the power produced by this type of thermoelectric materials. In this ...

    • Development of Barium Strontium Titanate (BST) Based Sensor/ Instruments 

      Johari, Adnan, Assoc. Prof. Dr.; Zul Azhar, Zahid Jamal, Prof. Dr.; Irzaman Sulaiman, Hussain, Dr.; Sanna, Taking; Mohd Asri, Idris; Nurjuliana, Juhari; Norhayati, Sabani (Malaysian Invention and Design Society (MINDS), 2007-05-18)
      The research project deals with the development of BST based microsensors/instruments such as optical, heat and gas sensors/instruments.

    • Heart Beat Detector for Medical Applications Based on Barium Strontium Titanate (BST) Thinfilm Sensor 

      Johari, Adnan, Assoc. Prof. Dr.; Zul Azhar, Zahid Jamal, Prof. Dr.; Dr. Irzaman Sulaimen, Hussain; Sanna, Taking; Nur Juliana, Juhari; Muhammad Asri, Idris; Nurhayati, Sabani; Amylia, Hamzah (Kementerian Pengajian Tinggi Malaysia (KPTM), 2007-08-10)
      Our research deals with the development of Barium Strontium Titanate (BST) materials. These BST materials have applications in sensors and actuators. We have succeeded in developing instruments that measure preasure, heat, ...

    • Ionic conductivity and crystal structure for the Li3−2xCr2−xTax(PO4)3 system 

      Hiromichi, Aono; Muhammad Asri, Idris, Dr.; Yoshihiko, Sadaoka (Elsevier, 2004)
      The monoclinic phase (P21/n) was formed for 0≤x≤0.6 and the NASICON-type rhombohedral phase (R3̄c) was obtained for the region 0.8≤x≤1.2 in the Li3−2xCr2−xTax(PO4)3 system. The activation energy for Li+migration was ca. ...

    • Lattice Imperfections in Intermetallic Ti-Al alloys: an X-Ray Diffraction study of the microstructure by the Rietveld method 

      Lee Liu Mei (Universiti Malaysia PerlisSchool of Materials Engineering, 2008-03)
      Microstructure in intermetallic Ti-Al alloys with compositions of Al= 45, 50, 55, and 60% in the homogenized bulk states has been extensively studied using Rietveld whole X-ray profile fitting technique, adopting the ...

    • Overview of pathogenic micro-organisms destruction in contaminated water by oxide photocatalysis 

      Noor Azira, Mohd Noor; Muhammad Asri, Idris, Dr.; Dewi Suriyani, Che Halin, Dr.; Mohd Nazree, Derman, Dr.; Mohd Arif Anuar, Mohd Salleh (Trans Tech Publications, 2013)
      The titanium dioxide (TiO2) is a semiconductor oxide photocatalys, which is chemically and biologically inert but exhibits excellent photolytic activity in the ultraviolet (UV) region. Progress in photocatalytic water ...

    • Overview on high potential material for Thermoelectric and their structure 

      Muhammad Asri, Idris; Mohd Hisyam, M.; Syamsul Bahtiar, A. G.; Rohaya, A. M.; Nur Farhana, H.; Suzilawati, A. W. (Kolej Universiti Kejuruteraan Utara Malaysia, 2005-05-18)
      This report will review the most promising material for thermoelectric application (thermoelectric refrigerator and thermoelectric generator). Here we are concerned on the material selection with emphasizing on their ...

    • Preparation of Photoresponse n-TiO2 for hydrogen and oxygen evolution reactions in an electrochemical cell 

      Kow Wei Khen (Universiti Malaysia PerlisSchool of Materials Engineering, 2008-03)
      Today, energy crisis triggered by depletion and pollution aspect of fossil fuels, has urged the need to search of clean and renewable energy, which can effectively substitute petroleum. The use of hydrogen as an environmentally ...

    • Recycling Agricultural Waste from Palm Shells during Electric Arc Furnace Steelmaking 

      Nur Farhana, M. Yunos; Magdalena, Zaharia; M. Asri, Idris; Nath, Dilip; Khanna, Rita; Sahajwalla, Veena (American Chemical Society, 2012-01-19)
      The present study is focused on developing novel recycling of palm shell wastes as a carbon resource in electric arc furnace (EAF) steelmaking. Metallurgical coke was replaced by palm shells, and interactions with EAF slag ...

    • Solar Hydrogen Generator : Fuel for Future 

      Kow Wei Khen; Muhammad Asri Idris (School of Materials Engineering, 2008-01-09)
      Transport of ionic hydrogen species in the aqueous electrolyte. Transport of electronic charge carries within the electrodes and the external circuit.

    • Visual studies on film boiling 

      Suhaimi, Illias; Muhammad Asri, Idris; Muhamad Saisuldin, Abdul Manan; H. Azmi; Mohd Fathullah, Ghazali (Universiti Malaysia Perlis, 2009-10-11)
      The purpose of this research is to study and examine the droplet bounding phenomena on carbon heated surface during film-boiling period, which occur when a water droplet collided with the heated surface at a very high ...