Dr. Rahul Debnath
Assistant Professor of Physics | Nanoelectronics & Quantum Device Researcher
NIT Agartala
Assistant Professor of Physics | Nanoelectronics & Quantum Device Researcher
NIT Agartala
"If you can't explain something to a first-year student, then you haven't really understood it"- Dr. Richard Feynman
I am a Device physicist with a Ph.D. in Nanoelectronics from IISc Bangalore, specializing in quantum transport, 2D materials, and advanced device fabrication. My research focuses on twisted 2D materials, where moiré patterns give rise to novel transport and optical phenomena, complemented by my work on ferroelectric memories and scalable NAND flash architectures. I aim to bridge fundamental physics and device engineering to advance next-generation memory and quantum electronic technologies
As a Senior Researcher at Nanyang Technological University, Singapore (NTU 2023) under Prof Bent Weber, I engineered quantum dot devices using 2D materials, optimized fabrication protocols, and refined ohmic contact recipes, enabling cutting-edge low-temperature transport measurements.
At IISc Bangalore (Senior Research Associate, 2022), I fabricated MOSFET architectures using twisted 2D materials to overcome the Boltzmann limit in FETs and developed machine learning models (XGBoost regression) to predict graphene FET resistance across multiple device configurations.
My earlier work at NTU Singapore (2019) involved developing ultraclean twisted 2D Quantum material devices optimized for scanning tunneling microscopy (STM) studies.
Throughout my Ph.D. at Quantum Materials and Devices Group - Department of Physics - IISc - Bangalore India under Prof. Arindam Ghosh, I fabricated graphene and TMDC-based transistors, optimized fabrication processes using DOE methodology, and performed low-temperature magnetotransport studies to probe interfacial ferroelectric domains in twisted TMDCs for potential non-volatile memory applications. I also built optoelectronic devices and employed Raman and photoluminescence spectroscopy to study excitonic effects in twisted 2D materials.
My work bridges nanofabrication, quantum transport, and data-driven device modeling, with emphasis on:
Moiré-engineered 2D heterostructures and emergent Quantum phenomena
Non-local transport and memory applications in twisted TMDCs
Ferroelectric field-effect transistors (FeFETs) and scalable NAND flash architectures
Machine learning approaches for device simulation and resistance prediction
Light Matter interaction in twisted Moiré lattice
Rank 1 in Ph.D. batch, IISc Bangalore (2017).
NET 2017 (AIR 80).
JEST 2017 (AIR 71).
Inspire Fellow (2011-16), within the Top 1% in the Central Education Board in India.
Ph.D. in Nanoelectronics, Indian Institute of Science (IISc) Bangalore (2017–2023), NIRF Ranking 1st.
M.Sc. in Condensed Matter Physics, Jadavpur University (2014–2016, First Class), NIRF Ranking 9th (University).
B.Sc. in Physics, Jadavpur University (2011–2014, First Class).