prof. dr. akrajas bin ali umar

pensyarah universiti

institut kejuruteraan mikro & nanoelektronik (imen)

No. Telefon Rasmi :  60389118547

No. rasmi:
UKM : 03 8921 5555



   Biografi/ Biography :

  • Dr. Akrajas Ali Umar received his PhD in Physics from the National University of Malaysia in 2004 in organic thin film for optical sensing application. He is currently Associate Professor in the Institute of Microengineering and Nanoelectronics (IMEN), the National University of Malaysia since 2011. His research interests are mainly in the field of Nanophysics and Nanomaterial Chemistry, particularly nanostructures design with controlled atomic composition, surface structure and morphology with emphasis on energy conversion applications. Prior to joining the National University of Malaysia, he has served as a lecturer at the Department of Physics, Universitas Andalas, Indonesia from 1997 to 2008. He has also served as Ministry of Science and Technology and Environment of Malaysia (MOSTE) Postdoctoral Fellow, at the National University of Malaysia in 2004, Kyoto University Venture Business Laboratory Postdoctoral Fellow (2004-2005) and Japan Society for the Promotion of Science (JSPS) Postdoctoral Fellow in Kyoto University, Japan, from 2005-2007. He was World Class Professor of Ministry of Research, Science , Technology and higher Education of Indonesia (2018) and visiting scholar in Fudan University, China (2019-2020). Currently, he is a member of American Chemical Society USA and Institute of Electronics and Electrical Engineering USA. He has published more than 180 papers in high-impact factor journals with h-index as high as 29.

  • dwiprayogo wibowo, muh. zakir muzakkar, maulidiyah maulidiyah, muhammad nurdin, siti khatijah md saad, akrajas ali umar.  (2022).  morphological analysis of ag doped on tio2/ti prepared via anodizing and thermal oxidation methods.  - biointerface research in applied chemistry.  1421-1427. 

     

    n.a.s. aziz, m.y.a. rahman, a.a. umar.  (2022).  comparative study of dye-sensitized solar cell utilizing selenium and palladium cathode.  - journal of the indian chemical society.  1-5. 

     

    n.a.s. aziz, m.y.a. rahman, a.a. umar.  (2022).  palladium selenide as cathode for dye-sensitized solar cell: effect of palladium content.  - solid-state electronics.  1-5. 

     

    muhammad nurdin, maulidiyah maulidiyah, abdul haris watoni, armawansa armawansa, la ode agus salim, zul arham, dwiprayogo wibowo, irwan irwan, akrajas ali umar.  (2022).  nanocomposite design of graphene modified tio2 for electrochemical sensing in phenol detection.  - korean journal of chemical engineering.  209-215. 

     

    muliadi muliadi, muhammad nurdin, akrajas ali umar.  (2022).  synthesis of photoluminescent europium dithiocarbamate complexes with dimethyl phenanthroline and bipyridyl co-ligands.  - optical materials.  1-8. 

     

    muliadi muliadi, muhammad nurdin, akrajas ali umar.  (2022).  synthesis of photoluminescent europium dithiocarbamate complexes with dimethyl phenanthroline and bipyridyl co-ligands.  - optical materials.  1-8. 

     

    muhammad nurdin, zul arham, wa ode irna, maulidiyah maulidiyah, kurniawan kurniawan, la ode agus salim, irwan irwan, akrajas ali umar.  (2022).  enhanced-charge transfer over molecularly imprinted polyaniline modified graphene/tio2 nanocomposite electrode for highly selective detection of fipronil insecticide.  - materials science in semiconductors processing.  1-10. 

     

    elvy rahmi mawarnis, salah m. el-bahy, altaf yahya ahmed al-she'irey, liszulfah roza, islam h. el azab, gaber a.m. mersal, zeinhom m. el-bahy, mohamed m. ibrahim, akrajas ali umar.  (2022).  crystal growth and catalytic properties of agpt and aupt bimetallic nanostructures under surfactant effect.  - inorganic chemistry communications.  1-9. 

     

    muhammad nurdin, maulidiyah maulidiyah, abdul haris watoni, armawansa armawansa, la ode agus salim, zul arham, dwiprayogo wibowo, irwan irwan, akrajas ali umar.  (2022).  nanocomposite design of graphene modified tio2 for electrochemical sensing in phenol detection.  - korean journal of chemical engineering.  209-215. 

     

    anita eka putri, liszulfah roza, setia budi, akrajas ali umar, vivi fauzia.  (2021).  tuning the photocatalytic activity of nanocomposite zno nanorods by shape-controlling the bimetallic auag nanoparticles.  - applied surface science.  14784. 

     

    a.y.a. al-she'irey, m.y.a. rahman, a.a. umar.  (2022).  perovskite-sensitized solar cell utilizing tio2 nanograss: effect of dipping time of ch3nh3pbi3 perovskite.  - journal of the indian chemical society.  1-5. 

     

    a y a al-she'irey, m y a rahman, m i a umar, i sugihartono, v fauzia, a a umar.  (2022).  effect of potassium precursor concentration on the performance of perovskite-sensitized solar cells.  - bulletin of materials science.  1-9. 

     

    m.y.a. rahman, s.n. sadikin, a.a. umar.  (2022).  dye-sensitized solar cells using zinc sulphide-coated titanium dioxide films as photoanode: effect of immersion temperature on its performan.  - international journal of electrochemical science.  1-11. 

     

    j. ridwan, j. yunas, a.a. umar, a.a. mohd raub, a.a. hamzah, j. kazmi a.b.d. nandiyanto, r.e. pawinanto, i. hamidah.  (2022).  vertically aligned cu-doped zno nanorods for photocatalytic activity enhancement.  - international journal of electrochemical science.  1-18. 

     

    setia budi, wisnu ari adi, yusmaniar, zahra fairuza, imam basori, akrajas ali umar.  (2022).  structural analysis of nanocrystalline cu2o prepared by electrodeposition at different temperatures.  - international journal of electrochemical sciences.  1-12. 

     

    j. ridwan, j. yunas, a.a. umar, a.a. mohd raub, a.a. hamzah, j. kazmi a.b.d. nandiyanto, r.e. pawinanto, i. hamidah.  (2022).  vertically aligned cu-doped zno nanorods for photocatalytic activity enhancement.  - international journal of electrochemical science.  1-18. 

     

    elvy rahmi mawarnis, salah m. el-bahy, altaf yahya ahmed al-she'irey, liszulfah roza, islam h. el azab, gaber a.m. mersal, zeinhom m. el-bahy, mohamed m. ibrahim, akrajas ali umar.  (2022).  crystal growth and catalytic properties of agpt and aupt bimetallic nanostructures under surfactant effect.  - inorganic chemistry communications.  1-9. 

     

    a.y.a. al-she'irey, m.y.a. rahman, a.a. umar.  (2022).  perovskite-sensitized solar cell utilizing tio2 nanograss: effect of dipping time of ch3nh3pbi3 perovskite.  - journal of the indian chemical society.  1-5. 

     

    muhammad nurdin, dwiprayogo wibowo, thamrin azis, rezki ayu safitri, maulidiyah maulidiyah, amir mahmud, faizal mustapa, ruslan ruslan, la ode agus salim, zul arham, akrajas ali umar.  (2022).  photoelectrocatalysis response with synthetic mn-n-tio2/ti electrode for removal of rhodamine b dye.  - surface engineering and applied electrochemistry.  125-134. 

     

    a y a al-she'irey, m y a rahman, m i a umar, i sugihartono, v fauzia, a a umar.  (2022).  effect of potassium precursor concentration on the performance of perovskite-sensitized solar cells.  - bulletin of materials science.  1-9. 

     

    jaenudin ridwan, jumril yunas, akrajas ali umar, aini ayunni mohd raub.  (2021).  hydrothermal grow of cu doped zno nanorods for large spectrum photocatalyst.  - 2021 ieee regional symposium on micro and nanoelectronics (rsm).  108-111. 

     

    norhayati abu bakar, nur adliha abdullah, akrajas ali umar, muhamad mat salleh, joseph george shapter.  (2019).  effect of silver concentration towards formation of agpt nanofern films as sers substrates.  - fourth international conference on science and technology (materials science forum).  231-236. 

     

    liszulfah roza, i. iwantono, gusyeri andika, akrajas ali umar, mohd. yusri. abd rahman.  (2018).  effect of hexamethylenetetramine (hmt) concentration on the properties of boron doped zno nanotubes array films and the performance of dye-sensitized solar cell (dssc).  - international conference on engineering and technology (intcet 2017). 

     

    norhayati abu bakar, muhamad mat salleh, akrajas ali umar and joseph george shapter.  (2018).  effect of surface density silver nanoplate films toward surface-enhanced raman scattering enhancement for bisphenol a detection.  - journal of physics: conference series (3rd international symposium on frontier of applied physics, isfap 2017). 

     

    iwan s., fauzia v., umar a.a., sun x.w..  (2016).  room temperature photoluminescence properties of zno nanorods grown by hydrothermal reaction.  - aip conference proceedings.  1-4. 

     

    norhayati abu bakar, muhamad mat salleh dan akrajas ali umar.  (2015).  testing and measurement: techniques and applications.  - 34 dan 155-159. 

     

    mohammad b. kassim, lorna jeffery minggu, mohd hafizuddin haji jumali, akrajas, ali umar, siti fairus binti mohd yusoff, farah hannan anuar, khuzaimah arifin.  (2012).  progress in photoelectrochemical research 2012.  - 74. 

     

    norhayati abu bakar, muhamad mat salleh dan akrajas ali umar.  (2015).  testing and measurement: techniques and applications.  - 34 dan 155-159. 

     

    munetaka oyama, akrajas ali umar, jingdong zhang.  (2010).  advanced nanomaterials.  - Bab 8 hal. 297-318. 

     

    mohammad b. kassim, lorna jeffery minggu, mohd hafizuddin haji jumali, akrajas, ali umar, siti fairus binti mohd yusoff, farah hannan anuar, khuzaimah arifin.  (2012).  progress in photoelectrochemical research 2012.  - 74. 

     

    mohammad b. kassim, wan ramli wan daud, lorna jeffery minggu, kamaruzzaman sopian, mohd hafizuddin hj. jumali, akrajas ali umar, ibrahim n. hassan, siti fairus mohd yusoff, yap chi chin.  (2011).  progress in photoelectrochemical research 2011.  - 99. 

     

    tengku hasnan bin tengku abdul aziz;akrajas bin ali umar.  (2021).  reduced graphene oxide as electron buffer layer for organic light emitting diodes (oleds).  -

     

    akrajas ali umar.  (2021).  fixing the interface for enhanced perovskite solar cell performance.  - research outreach.  1-4. 

     

    akrajas bin ali umar;tengku hasnan bin tengku abdul aziz;mohd yusri bin abd rahman;mohd ambri bin mohamed.  (2021).  investigation of the role of atomic stoichiometry in moxwycu1-x-yx2 (x=s and se) nanosheets on their optoelectronic properties for high performance solar cells.  -

     

    abdul rahman bin mohmad;azrul azlan bin hamzah;tengku hasnan bin tengku abdul aziz;akrajas bin ali umar.  (2021).  metallic 2-dimensional 1t mos2 as electrode material for supercapacitors.  -

     

    mohd yusri bin abd rahman;akrajas bin ali umar.  (2021).  nickel sulfide-reduced graphene oxide composite film as counter electrode in dye-sensitized solar cell.  -