pensyarah universiti
institut kejuruteraan mikro & nanoelektronik (imen)
akrajas@ukm.edu.my
Kluster Kepakaran/ Cluster of Expertise :
Teknologi Digital dan Terkehadapan,
Sumber Lestari, Alam Sekitar dan Kehidupan Pintar,
Biografi/ Biography :
Prof. 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 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). He has been appointed as Fudan Scholar, Fudan University in 2023. He has published more than 280 papers in high-impact factor journals with h-index as high as 36.
annete gabriella nuraliya, osi arutanti, riser fahdiran, maykel manawan, rahmat setiawan mohar, rike yudianti, akrajas ali umar, iwan sugihartono. (2026). the influence of cuo content on zno/cuo nanocomposite for photocatalytic degradation of tetracycline. - applied physics a: materials science & processing. 1 - 11.
nurain najihah alias, khatijah aisha yaacob, akrajas ali umar, muhammad aniq shazni mohammad haniff . (2026). advancement of silicon nanowires field-effect transistor in biosensing technology: a review. - microchemical journal. 1 - 25.
indra adinata, nurul mutmainnah ramlan, ferry anggoro ardy nugroho, akrajas ali umar, liszulfah roza, isnaeni isnaeni, gerald ensang timuda, vivi fauzia. (2026). defect engineering and graphene quantum dot functionalization synergistically modulate charge transfer and photocurrent stability in tio2 photoanodes. - surfaces and interfaces. 1 - 12.
fareed farihin mohd firdaus, norasikin ahmad ludin, akrajas ali umar, ubaidah syafiq, adamu ahmed goje, taiwaba afroze tasmia . (2026). low temperature tin oxide electron transport layers for flexible perovskite solar cells:a review. - solar energy. 114416 - 114416.
alimin alimin, sri juari santosa, akrajas ali umar, rahmayanti rahmayanti, alham alham. (2025). green conductive paper derived from sago pulp of southeast sulawesi based on magnetic nanocomposite of fe3o4/carbon nanofibers for phenol adsorption. - environmental nanotechnology, monitoring and management. 1 - 8.
fareed farihin mohd firdaus, norasikin ahmad ludin, akrajas ali umar, ubaidah syafiq, adamu ahmed goje, taiwaba afroze tasmia . (2026). low temperature tin oxide electron transport layers for flexible perovskite solar cells:a review. - solar energy. 114416 - 114416.
annete gabriella nuraliya, osi arutanti, riser fahdiran, maykel manawan, rahmat setiawan mohar, rike yudianti, akrajas ali umar, iwan sugihartono. (2026). the influence of cuo content on zno/cuo nanocomposite for photocatalytic degradation of tetracycline. - applied physics a: materials science & processing. 1 - 11.
nurain najihah alias, khatijah aisha yaacob, akrajas ali umar, muhammad aniq shazni mohammad haniff . (2026). advancement of silicon nanowires field-effect transistor in biosensing technology: a review. - microchemical journal. 1 - 25.
indra adinata, nurul mutmainnah ramlan, ferry anggoro ardy nugroho, akrajas ali umar, liszulfah roza, isnaeni isnaeni, gerald ensang timuda, vivi fauzia. (2026). defect engineering and graphene quantum dot functionalization synergistically modulate charge transfer and photocurrent stability in tio2 photoanodes. - surfaces and interfaces. 1 - 12.
faizal mustapa, selvia laki wawe, la ode ahmad, dwiprayogo wibowo, amir mahmud, maulidiyah maulidiyah, akrajas ali umar, muhammad nurdin.. (2025). development of cellulose acetate-polyethylene glycol-chitosan membrane-embedded tio2 nanoparticles for reverse osmosis desalination. - water, air, and soil pollution. 1 - 15.
hudya fitra hasmin, livia ilona djajasuminta, muhammad adam dwiputra, tengku emrinaldi, liszulfah roza, akrajas ali umar, titian riski ginting, vivi fauzia . (2025). enhancing the performance of molybdenum disulfide-based solar water evaporation systems by tuning the synthesis temperature. - environmental progress & sustainable energy. 1 - 12.
syahirah ahinayadullah, muhammad hilmi johari, muhammad faris musawwi ruslan, mega fatmasari, akrajas ali umar & abdul rahman mohmad. (2025). sintesis dan mekanisme pertumbuhan kepingan nbs2 yang dihasilkan melalui pemendapan wap kimia dibantu garam halida. - sains malaysiana. 1159 - 1166.
n. a. s. aziz·, m. y. a. rahman, a. a. umar, e. r. mawarnis, a. w. m. zuhdi. (2025). dye-sensitized solar cells utilizing aurum-palladium bimetal film counter electrode. - ionics. 2855 - 2867.
e. r. mawarnis, l. roza, m. y. a. rahman, m. herman, a. a. umar, n. a. s. aziz. (2024). palladium–ruthenium binary alloy nanosheets as catalyst for electrochemical water splitting. - chemical papers. 5961 - 5968.
thamrin azis, lintan ashari, muhammad zakir muzakkar, muhammad nurdin, la ode muhammad zuhdi mulkiyan, la ode agus salim, muh edihar, akrajas ali umar. (2024). enhancing cyclic voltammetry performance with n-graphene-supported coupled nio/tio2 hollow nanospheres as superior anode material . - chemical papers. 4719 - 4731.
annete gabriella nuraliya, osi arutanti, riser fahdiran, maykel manawan, rahmat setiawan mohar, rike yudianti, akrajas ali umar, iwan sugihartono. (2026). the influence of cuo content on zno/cuo nanocomposite for photocatalytic degradation of tetracycline. - applied physics a: materials science & processing. 1 - 11.
nurain najihah alias, khatijah aisha yaacob, akrajas ali umar, muhammad aniq shazni mohammad haniff . (2026). advancement of silicon nanowires field-effect transistor in biosensing technology: a review. - microchemical journal. 1 - 25.
indra adinata, nurul mutmainnah ramlan, ferry anggoro ardy nugroho, akrajas ali umar, liszulfah roza, isnaeni isnaeni, gerald ensang timuda, vivi fauzia. (2026). defect engineering and graphene quantum dot functionalization synergistically modulate charge transfer and photocurrent stability in tio2 photoanodes. - surfaces and interfaces. 1 - 12.
fareed farihin mohd firdaus, norasikin ahmad ludin, akrajas ali umar, ubaidah syafiq, adamu ahmed goje, taiwaba afroze tasmia . (2026). low temperature tin oxide electron transport layers for flexible perovskite solar cells:a review. - solar energy. 114416 - 114416.
hudya fitra hasmin, livia ilona djajasuminta, muhammad adam dwiputra, tengku emrinaldi, liszulfah roza, akrajas ali umar, titian riski ginting, vivi fauzia . (2025). enhancing the performance of molybdenum disulfide-based solar water evaporation systems by tuning the synthesis temperature. - environmental progress & sustainable energy. 1 - 12.
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.
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). .
norshafadzila m.n., huda a., noor azwen n.a., akrajas a.u., aidil a.h., sahbudin s.. (2016). fabrication and characterization of pani-ag-co nanocomposite thin films as microbial sensor for e. coli detection. - materials science forum. 641-649.
akrajas ali umar, nurul ain abd malek, nabilah alias, abang anuar ehsan. (2022). two-dimensional transition metal dichalcogenide as electron transport layer of perovskite solar cells. - . 79-98.
norhayati abu bakar, muhamad mat salleh dan akrajas ali umar. (2015). a high sensitive of an optical raman sensor system to detect bisphenol a. - . 34 dan 155-159.
munetaka oyama, akrajas ali umar, jingdong zhang. (2010). recent advances in metal nanoparticle-attached electrodes. - . Bab 8 hal. 297-318.
syahirah ahinayadullah, muhammad hilmi johari, muhammad faris musawwi ruslan, mega fatmasari, akrajas ali umar & abdul rahman mohmad. (2025). sintesis dan mekanisme pertumbuhan kepingan nbs2 yang dihasilkan melalui pemendapan wap kimia dibantu garam halida. - sains malaysiana. 1159 - 1166.
siti azrah mohamad samsuri, mohd. yusri abd. rahman, akrajas ali umar, halim razali. (2024). sel suria terpeka pewarna: agen penchayaan dan perlepasan cas. - . 173.
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.
m.y.a. rahman, l. roza, s.a.m. samsuri, a.a. umar. (2018). effect of n719 dye dipping temperature on the performance of dye-sensitized solar cell. - russian journal of electrochemistry. .
a.s. sulaiman, m.y.a. rahman, a.a. umar, m.m. salleh. (2018). dye-sensitized solar cell (dssc) utilizing tio2 nanostructure films: effect of synthesis temperature. - russian journal of electrochemistry. 56-61.
akrajas bin ali umar;dee chang fu;abdul rahman bin mohmad. (2024). two-dimensional nio hole-selective layer for highly efficient inverted perovskite solar cells. - . .
abdul rahman bin mohmad;akrajas bin ali umar;mohd ambri bin mohamed;rozan binti mohamad yunus. (2023). impact of niobium interstitials on structural properties and catalytic activity of metallic 2-dimensional niobium disulfide. - . .
dilla duryha binti berhanuddin;norhana binti arsad;akrajas bin ali umar;ahmad rifqi bin md zain. (2022). the development of silicon based light-emitting device using hybrid optically active point-defect and photonic crystal (phc) techniques. - . .
dilla duryha binti berhanuddin;burhanuddin bin yeop majlis;akrajas bin ali umar;abdul rahman bin mohmad;rozan binti mohamad yunus. (2022). high intensity photoluminescence from structural manipulation of hybrid 2d materials and silicon structure for the development of light-emitting device at telecommunication wavelength . - . .
mohd yusri bin abd rahman;akrajas bin ali umar;mohd sukor bin su`ait. (2022). nickelpalladium alloy-reduced graphene oxide composite as counter electrode of dye-sensitized solar cells. - . .
| Geran / Grant | Kolaborator / Collaborator | Status |
|---|---|---|
| PENDERIA ULTRAPEKA DAN FLEKSIBEL SERAKAN RAMAN PERMUKAAN DIPERKUAT (SERS) MENGGUNAKAN SWA-PASANG NANOBINTANG PERAK | sigtech engineering sdn bhd | 72.8% (2024-11-01 sehingga 2026-10-31) |
| UPSCALING 4-TERMINAL SILICON-PEROVSKITE TANDEM SOLAR CELLS TO PANEL LEVE | mna green tech sdn. bhd. | 18.7% (2025-12-01 sehingga 2027-11-30) |
| HIGH EFFICIENCY SOLAR PANELS USING ADVANCED MATERIALS | mimos berhad | 89.2% (2021-11-01 sehingga 2026-10-31) |
| HIGH EFFICIENCY SOLAR PANELS USING ADVANCED MATERIALS | gading kencana sdn bhd | 89.2% (2021-11-01 sehingga 2026-10-31) |
| FLEXIBLE, SUSTAINABLE, AND EFFICIENT ENERGY HARVESTING SOLAR PHOTOVOLTAIC PANELS | petronas research sdn. bhd. | 97.7% (2024-09-02 sehingga 2026-04-30) |
PHYSICS :PURE AND APPLIED SCIENCES
Nanomaterials
Pengalaman / Experience : tahun/years(s)
PHYSICS :PURE AND APPLIED SCIENCES
Nanomaterials Architecture for Energy Conversion
Pengalaman / Experience : 16 tahun/years(s)