MUHAMMAD ABDULLAH IZAT BIN MOHD YASSIN

@geomatika.edu.my

Senior Lecturer, faculty of Bioeconomic and Health Science, Universiti Geomatika Malaysia
UNIVERSITI GEOMATIKA MALAYSIA



                 

https://researchid.co/abdullahizat

EDUCATION

Ph.D (Physics), Universiti Teknologi Malaysia
MSc (Physics) Universiti Teknologi Malaysia
BSc (Material Physics), Universiti Teknologi Malaysia

RESEARCH, TEACHING, or OTHER INTERESTS

Condensed Matter Physics, Surfaces, Coatings and Films, Materials Science

4

Scopus Publications

3

Scholar Citations

1

Scholar h-index

Scopus Publications

  • Electron Beam-Initiated Grafting of Methyl Methacrylate on Silicon Nanowires: Investigating Optical and Structural Properties
    Muhammad Abdullah Izat Bin Mohd Yassin, Khaidzir Hamzah, and Sib Krishna Ghoshal
    Hindawi Limited
    Silicon nanowire (SiNW) is a one-dimensional nanostructured material that had been widely studied due to its potential applications in various fields. Combination of polymers and nanostructured materials offers great potential for enhanced material with many possible applications. The investigation focuses on how this grafting process influences the optical properties of SiNWs, aiming to uncover potential applications for these hybrid materials. This paper comprehensively presents the methodology and characterization of these SiNWs-MMA hybrid materials, exploring their potential applications. The experimental process begins with the preparation of six SiNWs using RF magnetron sputtering, involving the deposition of an Au catalyst and subsequent growth of SiNWs. The radiation-induced grafting involves exposing SiNWs to electron beams and subsequently grafting MMA onto the surface. The outcomes reveal that the grafting percentage of MMA onto SiNWs increases with higher radiation doses, leading to a polymer layer covering the SiNWs. This grafting is confirmed through Fourier-transform infrared (FTIR) spectroscopy, which shows characteristic peaks of MMA on the surface. X-ray diffraction (XRD) analysis demonstrates changes in crystallite size, microstrain, and dislocation density upon grafting, which are attributed to stress relief and the effect of polymer on SiNWs’ lattice. Field emission scanning electron microscopy (FESEM) images exhibit the increasing MMA layer on SiNWs as the grafting percentage increases. UV-visible spectroscopy shows that the introduction of MMA increases the optical band gap of SiNWs, attributed to changes in surface roughness due to the carbon from MMA. This study introduces a novel method of hybridizing SiNWs with MMA through radiation-induced grafting. The detailed characterization of the resulting SiNWs-MMA hybrid materials sheds light on their structural and optical properties. These findings hold the promise of innovative applications in various technological fields, further advancing nanotechnology.

  • VHF-PECVD fabrication parameters dependent morphologyvariation of gold catalyst assisted silicon thin film growth
    Khaidzir Hamzah, M. Abdullah Izat Mohd Yassin, Sib Krishna Ghoshal, M. Akmal Hasanudin, and Abdul Khamim Ismail
    Penerbit UTM Press
    Achieving two dimensional quantum structure of silicon with well-defined tunable morphology is an outstanding issue. We present the preliminary results on fabrication parameters dependent silicon thin film production using VHF-PECVD method. Five samples are prepared on Si(100) substrate with gold (Au) catalyst by adjusting different parameters such as deposition time, temperature and the flow of precursor gas. The samples morphology are analyzed using FESEM. The results reveal that the silicon thin film appear to be smooth and more uniform after an enormous amount of hydrogen is inserted together with the precursor gas (silane) during the deposition process. More interestingly, the films exhibit silicon nanowires as the deposition time is increased up to 1 hour. This morphological transformation is attributed to the vapor-liquid-solid (VLS) mechanism related to the deposition process.

  • VHF-PECVD fabrication parameters dependent morphology variation of gold catalyst assisted silicon thin film growth
    Khaidzir Hamzah, M. Abdullah Izat Mohd Yassin, Sib Krishna Ghoshal, M. Akmal Hasanudin, and Abdul Khamim Ismail
    Penerbit UTM Press
    Achieving two dimensional quantum structure of silicon with well-defined tunable morphology is an outstanding issue. We present the preliminary results on fabrication parameters dependent silicon thin film production using VHF-PECVD method. Five samples are prepared on Si(100) substrate with gold (Au) catalyst by adjusting different parameters such as deposition time, temperature and the flow of precursor gas. The samples morphology are analyzed using FESEM. The results reveal that the silicon thin film appear to be smooth and more uniform after an enormous amount of hydrogen is inserted together with the precursor gas (silane) during the deposition process. More interestingly, the films exhibit silicon nanowires as the deposition time is increased up to 1 hour. This morphological transformation is attributed to the vapor-liquid-solid (VLS) mechanism related to the deposition process.

  • Chemical durability of Yb doped lead tellurite glass: Effect of solution pH
    Khaidzir Hamzah, M. Abdullah Izat Yassin, M. Rahim Sahar, Sib Krishna Ghoshal, Ramli Arifin, and Md Supar Rohani
    Trans Tech Publications, Ltd.
    Series of glass based on (80-x)TeO2-10PbO-10PbCl2-xYb2O3 where 0.0 ≤ x ≤ 3.0 has been successfully prepared by melt quenching technique. The amorphous nature of glass has been determined by X-ray diffraction method. Their corrosion behavior was investigated using the FTIR spectroscopy technique on the sample that has been immersed in distilled water and in aqueous solution of pH 4 and pH 9 for 10 days. There were three major absorption peaks around 3600 cm-1, 889 cm-1 and 470 cm-1 has been observed. The intensity of each peak was found to vary with the Yb3+ content.

RECENT SCHOLAR PUBLICATIONS

  • Morphological and structural characterization of reduced graphene oxide films prepared by RF magnetron sputtering
    MFO Nor Shahira Md Rudin, Muhammad Abdullah Izat Mohd Yassin
    FULLERENES, NANOTUBES AND CARBON NANOSTRUCTURES 2025

  • Electron Beam‐Initiated Grafting of Methyl Methacrylate on Silicon Nanowires: Investigating Optical and Structural Properties
    MAIB Mohd Yassin, K Hamzah, SK Ghoshal
    Advances in Materials Science and Engineering 2023 (1), 7011929 2023

  • VHF-PECVD FABRICATION PARAMETERS DEPENDENT MORPHOLOGYVARIATION OF GOLD CATALYST ASSISTED SILICON THIN FILM GROWTH
    K Hamzah, MAIM Yassin, SK Ghoshal, MA Hasanudin, AK Ismail
    Jurnal Teknologi (Sciences & Engineering) 76 (1) 2015

  • Aqueous corrosion investigation of Yb doped lead oxychloride tellurite glass
    K Hamzah, MAI Yassin, AF Suffian, MR Sahar, SK Ghoshal
    Advanced Materials Research 1107, 477-482 2015

  • The Effect of Yb3+ on Corrosion of Lead Oxychloride Tellurite Glasses
    MAIM Yassin
    Universiti Teknologi Malaysia 2013

  • Chemical Durability of Yb doped Lead Tellurite Glass: Effect of Solution pH
    K Hamzah, MAI Yassin, MR Sahar, SK Ghoshal, R Arifin, MS Rohani
    Advanced Materials Research 501, 81-85 2012

  • Leaching of Pb2+ and Te4+ in Yb3+ doped lead tellurite glasses in aqueous solution
    K Hamzah, MAIM Yassin, MR Sahar, SK Ghoshal
    Malaysian Journal of Fundamental and Applied Sciences 8 (4) 2012

  • Effects of Annealing Temperature on the Alternating Current Characteristics of Tin (II) Sulfide Thin Films
    MAIM Yassin
    Universiti Teknologi Malaysia 2010

  • The Effects of Yb3+ Content on the Corrosion Rate of Lead Oxychloride Tellurite Glasses
    M Mohd Yassin, K Hamzah, SK Ghoshal
    Available at SSRN 4371079

  • IMPACT OF RADIO FREQUENCY POWER AND DEPOSITION TIME ON SPUTTERED GOLD THIN FILM GROWTH
    K Hamzah, MAIM Yassin, SK Ghoshal, MF Omar, AK Ismail

  • Influence of Annealing Temperature to the Structure of Lithium Niobate by Melt Quenching Technique
    WHA Kamaruddin, MAI Yassin, MR Sahar, MS Rohani, Z Ibrahim

MOST CITED SCHOLAR PUBLICATIONS

  • VHF-PECVD FABRICATION PARAMETERS DEPENDENT MORPHOLOGYVARIATION OF GOLD CATALYST ASSISTED SILICON THIN FILM GROWTH
    K Hamzah, MAIM Yassin, SK Ghoshal, MA Hasanudin, AK Ismail
    Jurnal Teknologi (Sciences & Engineering) 76 (1) 2015
    Citations: 1

  • Aqueous corrosion investigation of Yb doped lead oxychloride tellurite glass
    K Hamzah, MAI Yassin, AF Suffian, MR Sahar, SK Ghoshal
    Advanced Materials Research 1107, 477-482 2015
    Citations: 1

  • Chemical Durability of Yb doped Lead Tellurite Glass: Effect of Solution pH
    K Hamzah, MAI Yassin, MR Sahar, SK Ghoshal, R Arifin, MS Rohani
    Advanced Materials Research 501, 81-85 2012
    Citations: 1