prof. madya dr. akrajas bin ali umar

pensyarah universiti

institut kejuruteraan mikro & nanoelektronik (imen)

No. sambungan :  60389118547

No. rasmi:
UKM : 03 8921 5555



   Biografi :
  • 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, to investigate the role of atomic composition, surface structure and shape of nanostructures on their electrical and optical properties for used in optoelectronics and 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. 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 27.

  • p. susthitha menon a/p n v visvanathan;akrajas bin ali umar;dilla duryha binti berhanuddin.  (2020).  multi-parametric graphene-based spr biosensor utilizing kretschmann-based technique.  -

     

    n. mustaffa, m.y.a. rahman, a.a. umar.  (2020).  dye-sensitized solar cell utilizing silver doped reduced graphene oxide: influence of annealing temperature on its performance.  - arabian journal of chemistry.  3383-3390. 

     

    ali muhammad mahar, aamna balouch, farah naz talpur, abdullah, pirah panah, raj kumar, ameet kumar, abdul hameed pato, dadu mal, sagar kumar, akrajas ali umar.  (2020).  fabrication of pt-pd@ito grown heterogeneous nanocatalyst as efficient remediator for toxic methyl parathion in aqueous media.  - environmental science and pollution research.  9970-9978. 

     

    akrajas bin ali umar;tengku hasnan bin tengku abdul aziz;mohd yusri bin abd rahman.  (2020).  high performance organometal halide perovskite solar cells utilizing high-surface energy (001) faceted anatase tio2 nanosheets.  -

     

    rahmat setiawan mohar, iwan sugihartono, vivi fauzia, akrajas ali umar.  (2020).  dependence of optical properties of mg-doped zno nanorods on al dopant.  - surface and interfaces.  1-6. 

     

    nurul ain abd malek, nabilah alias, siti khatijah md saad, nur adliha abdullah, xin zhang, xiaoguo li, zejiao shi, mohd mustaqim rosli, tengku hasnan tengku abd aziz, akrajas ali umar, yiqiang zhan.  (2020).  ultra-thin mos2 nanosheet for electron transport layer of perovskite solar cells.  - optical materials.  1-8. 

     

    siti khatijah md saad, nabilah alias, muhamad adam ramli, nur adliha abdullah, nurul ain abd malek, mohd mustaqim rosli and akrajas ali umar.  (2020).  a two-dimensional crystal growth in anatase titania nanostructures driven by trigonal hydronium ions.  - rsc advances.  16886-16891. 

     

    n. mustaffa, m.y.a. rahman, a.a. umar.  (2020).  dye-sensitized solar cell utilizing silver doped reduced graphene oxide: influence of annealing temperature on its performance.  - arabian journal of chemistry.  3383-3390. 

     

    ali muhammad mahar, aamna balouch, farah naz talpur, abdullah, pirah panah, raj kumar, ameet kumar, abdul hameed pato, dadu mal, sagar kumar, akrajas ali umar.  (2020).  fabrication of pt-pd@ito grown heterogeneous nanocatalyst as efficient remediator for toxic methyl parathion in aqueous media.  - environmental science and pollution research.  9970-9978. 

     

    muhammad nurdin, maulidiyah maulidiyah, la ode agus salim, muhammad zakir muzakkar, akrajas ali umar.  (2019).  high performance cypermethrin pesticide detection using anatase tio2-carbon paste nanocomposites electrode.  - microchemical journal. 

     

    s.n. sadikin, m.y.a. rahman, a.a. umar.  (2020).  influence of annealing temperature of tio2-coated zns films on the performance of dye-sensitized solar cells.  - optik.  1-9. 

     

    m.y.a. rahman, s.a.m. samsuri, a.a. umar.  (2019).  tio2-srtio3 composite photoanode: effect of strontium precursor concentration on the performance of dssc.  - applied physics a-materials science & processing.  1-11. 

     

    s.n. sadikin, m.y.a. rahman, a.a. umar, t.h.t. aziz.  (2019).  improvement of dye-sensitized solar cell performance by utilizing tio2 coated graphene films photoanode.  - superlattices and microstructures.  92-98. 

     

    norhayati abu bakar, akrajas ali umar, muhamad mat salleh.  (2019).  reka bentuk sensor pendar cahaya bintik kuantum zncdse untuk mengesan racun perosak.  - sains malaysiana.  1513-1518. 

     

    s.n. sadikin, m.y.a. rahman, a.a. umar.  (2019).  zinc sulphide-coated titanium dioxide films as photoanode for dye-sensitized solar cells: effect of immersion time on its performance.  - superlattices and microstructures.  153-159. 

     

    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. 

     

    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). 

     

    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). 

     

    abdullah h., naim n.m., hamid a.a., umar a.a..  (2016).  characterization and fabrication of nanocomposite thin films of pani embedded with ag-mn alloy for e. coli sensor.  - materials today: proceedings.  538-544. 

     

    iwantono i., tugirin s., anggelina f., awitdrus, taer e., roza l., umar a.a..  (2016).  effect of growth solution concentration on the performance of gallium doped zno nanostructures dye sensitized solar cells (dsscs).  - aip conference proceedings.  1-8. 

     

    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. 

     

    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). 

     

    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). 

     

    abdullah h., naim n.m., hamid a.a., umar a.a..  (2016).  characterization and fabrication of nanocomposite thin films of pani embedded with ag-mn alloy for e. coli sensor.  - materials today: proceedings.  538-544. 

     

    iwantono i., tugirin s., anggelina f., awitdrus, taer e., roza l., umar a.a..  (2016).  effect of growth solution concentration on the performance of gallium doped zno nanostructures dye sensitized solar cells (dsscs).  - aip conference proceedings.  1-8. 

     

    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. 

     

    akrajas bin ali umar;tengku hasnan bin tengku abdul aziz;mohd yusri bin abd rahman.  (2020).  high performance organometal halide perovskite solar cells utilizing high-surface energy (001) faceted anatase tio2 nanosheets.  -

     

    p. susthitha menon a/p n v visvanathan;akrajas bin ali umar;dilla duryha binti berhanuddin.  (2020).  multi-parametric graphene-based spr biosensor utilizing kretschmann-based technique.  -

     

    norhayati binti abu bakar;akrajas bin ali umar;abdul rahman bin mohmad;norhayati binti abu bakar.  (2019).  building surface enhanced raman spectroscopy (sers) based biosensors.  -

     

    dee chang fu;muhamad bin mat salleh;burhanuddin bin yeop majlis;azrul azlan bin hamzah;akrajas bin ali umar.  (2019).  study on the sensing properties on albumin protein by nanowire based sensing arrays.  - 1-5. 

     

    mohd yusri bin abd rahman;muhamad bin mat salleh;akrajas bin ali umar.  (2019).  barium titanate (batio3) doped titanium dioxide (tio2) films as photoanode for dye-sensitized solar cell (dssc).  - 1-5.