Research Interests
Featured grants
- Piner, Edwin L (Principal), Haque, Ariful (Co-Principal), Valles Molina, Damian (Co-Principal), Miyahara, Yoichi (Co-Principal), Droopad, Ravindranath (Supporting), Holtz, Mark W (Supporting), Scolfaro, Luisa M (Supporting), Miller, David R von (Supporting), Ahmed, Mohammad Iqbal (Supporting). Center for Ultrawide Bandgap Semiconductor Device Materials, National Science Foundation, Federal, $7500000. (Submitted: December 6, 2024, Funded: September 1, 2025 - August 31, 2029). Grant.
- Haque, Ariful, Droopad, Ravindranath, Holtz, Mark W, Piner, Edwin L, Geerts, Wilhelmus J, Chen, Yihong, Hudnall, Todd W, Wistey, Mark A, Miyahara, Yoichi, Smith, Casey Eben, Mahato, Dip Narayan, Rastogi, Shiva Kumar, Kim, Namwon. Acquisition of a state-of-the-art Photoluminescence Spectrometer for Materials Characterization in Research and Education, Department of Defense, Federal, $434519. (Submitted: September 2023, Funded: 2024 - 2025). Grant.
- Miyahara, Yoichi (Principal), Satchell, Nathan David (Co-Principal), Holtz, Mark W (Co-Principal), Kim, Namwon (Co-Principal), Martin, Benjamin (Co-Principal), Chen, Yihong (Supporting), Theodoropoulou, Nikoleta (Supporting), Geerts, Wilhelmus J (Supporting), Piner, Edwin L (Supporting), Haque, Ariful (Supporting), Droopad, Ravindranath (Supporting), Mahato, Dip Narayan (Supporting), Smith, Casey Eben (Supporting). MRI: Track 1 Acquisition of state-of-the-art lithography system for micro/nanometer scale device fabrication in research and education, National Science Foundation, Federal, $569780. (Submitted: November 14, 2023, Funded: September 1, 2024 - August 31, 2027). Grant.
- Geerts, Wilhelmus J (Principal), Percent Contribution: %40, Tate, Jitendra S (Co-Principal), Percent Contribution: %25, Chen, Yihong (Co-Principal), Percent Contribution: %25, Droopad, Ravindranath (Other), Percent Contribution: %5, Rhodes, Christopher Peter (Other), Percent Contribution: %5. MRI: Development of triaxial Vibrating Sample Magnetometry for Research and Education, NSF, Federal, $119461. (Submitted: January 19, 2022, Funded: September 2022 - August 2025). Grant.
- Holtz, Mark W (Principal), Percent Contribution: %15, Chen, Yihong (Supporting), Percent Contribution: %11, Geerts, Wilhelmus J (Supporting), Percent Contribution: %15, Droopad, Ravindranath (Supporting), Percent Contribution: %8, Li, Jian (Co-Principal), Percent Contribution: %5, Myers, Thomas H (Supporting), Percent Contribution: %8, Piner, Edwin L (Supporting), Percent Contribution: %8, Theodoropoulou, Nikoleta (Supporting), Percent Contribution: %15, Zakhidov, Alexander (Supporting), Percent Contribution: %15. System of Integrated Characterization of Electronic Devices and Materials, U.S. AFOSR, Federal, $332086. (Funded: August 15, 2017 - August 14, 2018). Grant.

Featured scholarly/creative works
- Emu, I. H., Samuels, B. C., Karmakar, S., Hamid, M. A., Shiam, I. F., Sarkar, P. K., … Droopad, R. (2025). Epitaxial growth and characterization of copper gallate (CuGa2O4) thin films by pulsed laser deposition. Materials Science in Semiconductor Processing, 185, 108934 1-11. https://doi.org/https://doi.org/10.1016/j.mssp.2024.108934
- Karmakar, S., Emu, I. H., Halim, M. A., Sarkar, P. K., Sultana, M., Tasnim, A., … Haque, A. (2024). Growth Optimization, Optical, and Dielectric Properties of Heteroepitaxially Grown Ultrawide-Bandgap ZnGa2O4 (111) Thin Film. Journal of Applied Physics, 135, 115702-1–11. https://doi.org/https://doi.org/10.1063/5.0190906
- Karmakar, S., Shiam, I. F., Droopad, R., & Haque, A. (2024). Enriched electron donor sites and non-overlapping small polaron tunneling electrical conduction in oxygen-deficient β-Ga2O3 thin film on p-Si (100). Applied Physics A, 130. https://doi.org/https://link.springer.com/article/10.1007/s00339-024-07656-8
- Haque, S., Shiam, I. F., Manikanthababu, N., Droopad, R., & Haque, A. (2024). Upheaval of Negative Dielectric Permittivity and Semiconductor to Metallic Transition in a Thermally Induced Sn-Doped β-Ga2O3 (−201) Single Crystal. ACS Applied Materials & Interfaces, 48488–48501. https://doi.org/doi.org/10.1021/acsami.4c08604
- Hamid, M. A., Samuels, B. C., Emu, I. H., Sarkar, P. K. C., Tasnim, A., Saha, R. C., … Droopad, R. (2024). Impact of Thermal Annealing on Properties of MgGa2O4 Thin Films in Oxygen Ambience. ACS Applied Electronic Materials, 6(12). Retrieved from https://pubs.acs.org/doi/abs/10.1021/acsaelm.4c01481
Featured awards
- Award / Honor Recipient: Alpha Chi Favorite Professor. 2016 - Present
- Award / Honor Recipient: Senior Member, Institute of Electrical and Electrical Engineers. 2006

Featured service activities
- Graduate Advisor
Ingram School of Engineering
- Reviewer / Referee
Swiss National Science Foundation
- Reviewer / Referee
Journal of Material Chemistry
- Reviewer / Referee
German Research Foundation
- Reviewer / Referee
Departmant of Energy
- Reviewer / Referee
Israeli Pazy Foundation