Md Arifuzzaman

Semiconductor Device Engineer specialising in defect analysis in graphene, graphene device microfabrication, semiconductor process development and electrical characterisation. Extensive hands-on experience fabricating graphene field-effect transistor (GFET) devices through cleanroom manufacturing workflows, including CVD graphene transfer, photolithography, plasma etching, metal deposition, lift-off, ion implantation and electronic transport and gas sensing characterisation of GFET devices. Proven ability to optimise fabrication processes, investigate device failures and translate nanoscale materials engineering into high-performance electronic devices. Passionate about advancing graphene technologies from research into scalable semiconductor manufacturing.

• Fabricated graphene field-effect transistor (GFET) devices through end-to-end semiconductor cleanroom processing, from CVD graphene transfer to electrical characterisation.
• Developed controlled defect engineering of graphene using 30 keV ion implantation, enabling 10.65× higher NO₂ sensitivity at 0.1 ppm and ~10 ppb detection capability.
• Led gas sensing experiments in collaboration with RMIT University, demonstrating high-performance defective graphene sensors through systematic device testing and data analysis.
• Secured and managed competitive research funding, including a BDT 500,000 CTRG research grant and North South University research grants, leading multidisciplinary nanomaterials research projects.
• Awarded the Fulbright Tuition Scholarship, Teaching & Research Assistantships (Canada), and the Amethyst Research Scholarship in recognition of academic excellence and research achievements.
• Published multiple peer-reviewed journal articles in graphene, nanomaterials, spectroscopy and electronic materials.

• 19 Peer-reviewed Scientific Publications (https://scholar.google.com.au/citations?user=OwK8dWcAAAAJ&hl=en&authuser=1)
• Robert Glen Elliman, James Murray, Md Arifuzzaman, Tom Ratcliff, Sanjoy Kumar Nandi, Kai Nordlund and Flyura Djurabekova (2026). Defect Engineering in Graphene via Ion Irradiation: A Universal Scaling Framework, Carbon (IF: 12.7)- Under Review.
• M Rahman, S. Tabassum, N. Hasan, M Hoque, M Rashid and Md. Arifuzzaman (2026), Al3+ Doped Nanocrystalline Ni-Co-Zn Spinel Ferrites: Enhanced Physical and Electromagnetic Properties for Supercapacitor and Spintronics Applications, Advanced Materials Interfaces (I.F: 4.5) - Under Review.
• Apu, R. S., Hasan, N., Anik, M. H. K., Hasan, M. M., Arifuzzaman, M., Rashid, M. H., & Kabir, A. (2025). Pressure-Induced Physical and Optoelectronic Properties of Noble Cs2HfInBr6 for Enhanced Solar Energy Harvesting. International Journal of Energy Research, 2025(1) 9913604. (IF: 4.2)
• Link: https://onlinelibrary.wiley.com/doi/full/10.1155/er/9913604
• M., Rahman, M. M., Hasan, N., Tabassum, S., Rashid, M. H. O., Rashid, M. H., & Arifuzzaman, M. (2024). Bi3+ doped nanocrystalline Ni–Co–Zn spinel ferrites: Tuning of physical, electrical, dielectric and magnetic properties for advanced spintronics applications. Ceramics International, 50(21), 44585-44597. (IF: 5.6)
• Link: https://www.sciencedirect.com/science/article/abs/pii/S0272884224037660
• Hasan, N., Nishat, S. S., Sadman, S., Shadow, M. R., Hoque, M. A., Arifuzzaman, M., & Kabir, A. (2023). Magnetic, optoelectronic, and nitreveld refined structural properties of Al3+ substituted nanocrystalline Ni-Cu spinel ferrites: An experimental and DFT based study. Journal of Magnetism and Magnetic Materials, 573, 170675. (IF: 3.0)
• Link: https://www.sciencedirect.com/science/article/abs/pii/S0304885323003244
• Hasan, N., Arifuzzaman, M., & Kabir, A. (2022). Structural, elastic and optoelectronic properties of inorganic cubic FrBX 3 (B= Ge, Sn; X= Cl, Br, I) perovskite: the density functional theory approach. RSC Advances, 12(13), 7961-7972. (IF: 4.6)
• Link: https://pubmed.ncbi.nlm.nih.gov/35424743/

Two other manuscripts from my PhD studies at ANU are ready for submission to high-impact journals like AFM.

Conference Presentations (PhD Works- ANU, ACT, AUSTRALIA)

1. Md. Arifuzzaman, T. Ratcliff, S. Nandi, Rob Elliman, “Defect engineering for improved graphene-based gas sensing”, 24th International Conference on Ion Beam Modification of Materials (IBMM-24) - (21-26 June) - Oral.

2. Md. Arifuzzaman, T. Ratcliff, S. Nandi, Rob Elliman, “Defect Analysis in Graphene and Electrical Properties of Graphene Devices”, International Symposium on Semiconductor Optoelectronics and Nanotechnology (ISSON)- (Dec 2024)- Poster.

3. Md. Arifuzzaman, T. Ratcliff, S. Nandi, Rob Elliman, “Controlling Contact Resistance and Mobility of Graphene Devices through Defect Engineering”, The ICACS-SHIM 2024 Conference  (30th International Conference on Atomic Collisions in Solids & 12th International Symposium on Swift Heavy Ions in Matter)- (Nov 2024)- Oral.

4. Md. Arifuzzaman, T. Ratcliff, S. Nandi, Rob Elliman, “Improving contact resistance of Graphene-based devices for next-generation electronic device applications”,International Conference on Nanoscience and Nanotechnology (ICONN), Melbourne Exhibition Centre (Feb 2024)- Oral.

5. Md. Arifuzzaman, T. Ratcliff, S. Nandi, Rob Elliman, “ Contact Resistance Study of Graphene-based Devices for Next-generation Electronic Device Applications”,Australian and New Zealand Conference on Optics and Photonics and the Australian Institute for Physics Summer meeting (ANZCOP-AIP) (Dec 2023)- Oral.

Other Seminar Talks (PhD Works)

3 Minute Thesis Talk-College of Science and Medicine

1st July 2025, The Australian National University

Title: Pencil Tips to Superchips: Defects Driving the Next Tech Revolution

John Carver Seminar Series 2025-Research School of Physics

25 September 2025, The Australian National University

Title: Defect Engineering in Graphene for Gas Sensing Application

Workshops and Trainings

1. 2nd Direct Write Lithography Workshop- Arranged by ANFF

16th February, 2024, Storey Hall, RMIT, RMIT University, Melbourne

2. ANFF Research Showcase 2024

12th February, 2024, Melbourne Exhibition Centre

3. Day-long Workshop on Introduction to Transmission Electron Microscopy

Conducted by Felipe Kremer, Centre for Advanced Microscopy

1st June 2022, The Australian National University

• The Australian Ntional University
• North South University, Dhaka, Bangladesh

Senior Lecturer in Physics at North South University, Dhaka, Bangladesh