Dr. Sayan Dey received his PhD from the department of Electronics & Electrical Communication Engineering, IIT Kharagpur in 2020. After the completion of his PhD, he started working as a postdoctoral fellow at IIT Bombay till October 2021. Thereafter, he received the Fulbright-Nehru postdoctoral fellowship and joined as a visiting scientist at Columbia University, USA in November 2021.

His research areas include semiconductor device fabrication, chemical sensors, electrical spectroscopy, nanostructured materials and sensor interfacing electronics (both hardware and software). Presently, he has about thirty nine published research articles in reputed, high impact, peer reviewed international journals and conferences (including IEEE Transactions on Electron Devices, ACS Applied Electronic Materials, RSC Advances, Nature Microsystems and Nanoengineering, etc. to name a few). He co-owns an Indian patent for his work on highly selective chemoresistive toluene vapor sensor. Presently, his research articles hold 414 citations with an h-index of 12.

He has been awarded the national award for best thesis (Innovative Student Projects Award) twice, in 2015 and 2020, by the Indian National Academy of Engineering (INAE), respectively, for his M.Tech and Ph.D. dissertations. He is currently a senior member of the INAE since July 2025. He is the reviewer of several reputed, peer-reviewed scientific journals (IEEE Transactions of Electron Devices, IEEE sensors, RSC Advances, etc.) and has co-authored two text books on electronic device fabrication and materials processing.

He has more than twelve years of experience in nanostructure growth, solution based synthesis, sensor device fabrication, and handling clean room facilities. He is specially trained in handling X-ray diffraction, Field Emisison Scanning Electron Microscope (FESEM), optical spectroscopes, thin film deposition and optical lithography units and building microdevice characterization setups (with special focus to sensor device characterization).

He is the head of the Sensors and Spectroscopy Research Group and is the professor-in-charge for the Microfabrication and Characterization (MF&C) Lab and the Integrated Devices and Electronic Applications (IDEA) Lab at IIT Bhubaneswar since 2022.

1. Dr. Bidesh Mahata

1. Ms. Sukanya Mahalik – Sukanya Mahalik is currently pursuing her Ph.D. as an Institute fellow in Sensor Devices for Non-Invasive COPD Monitoring as part of the Sensors and Spectroscopy Research Group. She completed her Master’s in VLSI Design from VIT Vellore in 2022. She joined the group on 20th July, 2023 and has been actively working on Two dimensional MoS2 based sensors for ultrafast, portable and point of care detection of respiratory allergens and non-invasive and minimally invasive skin patch monitors for screening and diagnosing CRDs. She specializes in MoS2 growth, three terminal sensor device fabrication and skin patch integration. Her thesis, titled “2D- MoS 2 based patch sensors for human respiratory monitoring”, reflects an in-depth knowledge in sensor device design and their implementation in the field of minimally invasive and non-invasive diagnostics. She expects to complete her Ph.D. by January 2027.
2. Ms. Sampurna Mukherjee – Sampurna Mukherjee is currently pursuing her Ph.D. as a Visvesvaraya fellow in Sensor Devices for Minimally Invasive Glucose Monitoring as part of the Sensors and Spectroscopy Research Group. She completed her M.Tech. in Nano Science and Technology from Jadavpur University in 2023, achieving a CGPA of 8.56. She joined the group on 9th July, 2024, and has been actively working on two-dimensional MoS₂-based sensors for non-invasive, ultrafast, portable, and real-time glucose monitoring devices. She specializes in MoS₂ growth, three-terminal sensor device fabrication, and enzyme-functionalized sensor integration. Her thesis, titled “2D Nanostructure-Based Sensors for Minimally Invasive Glucose Monitoring,” reflects an in-depth knowledge of sensor device design and their implementation in the field of wearable and minimally invasive medical diagnostics. She expects to complete her Ph.D. by January 2028.
3. Mr. Arijit Pattra – Arijit Pattra is currently pursuing his Ph.D. as part of the Sensors and Spectroscopy Research Group, where his research focuses on the development of minimally invasive diagnostic platforms for cardiovascular disease monitoring. He completed his Master’s degree in Integrated Circuits and VLSI Systems from the Indian Institute of Technology (IIT) Bhubaneswar in 2025, during which he worked extensively on ultra-sensitive heavy metal ion sensors based on reduced graphene oxide (rGO) for water quality monitoring. His Master’s thesis, titled “rGO-Based Heavy Metal Ion Sensors for Water Quality Monitoring,” reflects his strong foundation in the synthesis, functionalization, and integration of rGO for advanced environmental sensing applications. He holds a B.Tech degree in Electronics and Communication Engineering from Maulana Abul Kalam Azad University of Technology, West Bengal. In addition to his expertise in nanomaterials and sensor development, Arijit has hands-on experience in fabricating field-effect transistors (FETs) based on two-dimensional (2D) materials, with a focus on device assembly, contact engineering, electrical and materials characterization. His current doctoral research builds upon this multidisciplinary background to develop flexible, point-of-care diagnostic systems for early and reliable detection of cardiovascular diseases. He is expected to complete his Ph.D. by December 2028

1. Mr. Sanjay Singh (2024 – 26) –
2. Mr. Amit Ranjan Sahu (2024 – 26) – Amit Ranjan Sahu is pursuing his Master’s in Semiconductor Technology and Chip Design and is currently working on his master’s dissertation as part of the Sensors and Spectroscopy Research Group. He completed his B.Tech from Dr. A.P.J. Abdul Kalam Technical University, Uttar Pradesh, in 2022. He joined the group in April 2025 and is working on nano materials synthesis for sensor applications and power device simulations. His minor projects include a 2D material-based tuneable gas sensor and nano inspired photodetectors. He is expected to complete his Master’s degree by June 2026.

1. A. Pattra, S. Das, M. Kar and S. Dey, “Graded junction ZnO on rGO conduction layer for ultra selective Cu(II) ion detection” in IEEE Sensors Journal, December 2024
2. S. Mahalik, A. K and S. Dey, “A 2D-MoS 2 -Based Thin-Film Transistor for Trace-Level SO 2 Monitoring,” in IEEE Transactions on Electron Devices, November 2024, doi: 10.1109/TED.2024.3492155
3. Anuvindh R, S. Mahalik, A. Roy, K. Akshay and S. Dey, “Conductance Spectroscopy: A Novel Technique for Ultra Selective Chemical Detection,” in IEEE Sensors Journal, October 2024, doi: 10.1109/JSEN.2024.3488531
4. S. Dey, A. N. Eshore, Z. Chen, C. Zhu, P. K. Guha and I. Kymissis, “Electrochemical Spectroscopy: A Novel Technique for Trace-Level Glucose Detection,” in IEEE Sensors Letters, vol. 8, no. 10, pp. 1-4, Oct. 2024, Art no. 2001004, doi: 10.1109/LSENS.2024.3430856
5. S. Mishra, V. P. Kowli, A. Kameswaramma, H. P. Padole and S. Dey, “Resistive Sensor Array for Selective Zn(II) Ion Detection From a Mixed Solution Using Machine Learning Techniques,” in IEEE Sensors Journal, vol. 24, no. 9, pp. 13870-13876, 1 May1, 2024, doi: 10.1109/JSEN.2024.3381604
6. S. Dey, A. N. Eshore, Z. Chen, C. Zhu, P. K. Guha and I. Kymissis, “Electrochemical Spectroscopy: A novel technique for trace level glucose detection,” in IEEE Sensors Letters, 2024, doi: 10.1109/LSENS.2024.3430856
7. S. Mishra, V. P. Kowli, A. Kameswaramma, H. P. Padole and S. Dey, “Resistive Sensor Array for Selective Zn(II) Ion Detection From a Mixed Solution Using Machine Learning Techniques,” in IEEE Sensors Journal, vol. 24, no. 9, pp. 13870-13876, 1 May1, 2024, doi: 10.1109/JSEN.2024.3381604
8. Navneet Gandhi; Sunil Rathore; Rajeewa Kumar Jaisawal; P. N. Kondekar; Sayan Dey; Navjeet Bagga; Unveiling the Self-Heating and Process Variation Reliability of a Junctionless FinFET-Based Hydrogen Gas Sensor, IEEE Sensors Letters, 2023, 7, 9, 1 – 4, DOI: 10.1109/LSENS.2023.3309263.
9. Abhijit Narayan Eshore; Sayan Dey; Dipak Kumar Goswami; Prasanta Kumar Guha; Crystallographic Nanojunctions of Bismuth Ferrite for Unconventional Detection of Carbon Monoxide ACS Applied Nano Materials, 2023, 6, 11, 9397–9403, DOI: 10.1021/acsanm.3c01119
10. Sayan Dey*, Preetam Guha Ray, Trina Roy, Sumita Santra, Santanu Dhara, Samit Kumar Ray, Prasanta Kumar Guha; “Nano-inspired biocompatible chemosensors: A Progress towards efficient prognosis of arsenic poisoning” ACS Applied Bio Materials, 2022, 5, 3850 ” 3858, DOI: https://doi.org/10.1021/acsabm.2c00405
11. Swati Nag, Sayan Dey#,*, Debmallya Das, Prasanta Kumar Guha; “Adsorption mediated n ” Type ZnO surface reconstruction for enhanced VOC vapour sensing: An experimental and first principle insight” ACS Applied Electronic Materials, 2022, 4, 3825 ” 3833, DOI: 10.1021/acsaelm.2c00452
12. Monikuntala Bhattacharya; Sayan Dey#; Md Sahanoor Islam; Anirban Roychowdhury; Jiten Ghosh; Chandan Kumar Ghosh; “Trapped exciton enhanced response of n-TiO2 (110) / p-Si (111) photodetector: adiabatic hole transfer across the interface”, ACS Applied Nano Materials, 2022, 5, 2, 2316″2325, DOI: https://doi.org/10.1021/acsanm.1c03993
13. Monikuntala Bhattacharya; Sayan Dey; Chandan Kumar Ghosh; “n-type TiO2 based re-usable sensor for light assisted Cd(II) ion detection” IEEE Transactions on Electron Devices, 2021, Vol. 68(6), 2951-2956, DOI: 10.1109/TED.2021.3071104
14. Anurag Kar; Sayan Dey#; Debasree Burman; Sumita Santra; Prasanta K. Guha; “RGO/Ni2O3 heterojunction based re-usable, flexible device for Cr(VI) ion detection in water” IEEE Transactions on Electron Devices, 2021, Vol. 68(2), 780-785, DOI: 10.1109/TED.2020.3045954
15. Sayan Dey; Swati Nag; Sumita Santra; Prasanta Kumar Guha; Samit Kumar Ray; “Voltage controlled NiO/ZnO heterojunction device: A new approach towards selective VOC sensing”, Microsystems and Nanoengineering, Nature, 2020, 6(35), https://doi.org/10.1038/s41378-020-0139-1
16. Sayan Dey; Sumita Santra; Prasanta Kumar Guha; Samit Kumar Ray; “FexNi(1-x)O/NiO heterojunction based selective VOC sensor device by using temperature tunability”, IEEE Sensors Journal, 2019, Vol. 20(14), 7503-7508, DOI: 10.1109/JSEN.2019.2962182
17. Avik Sett; Sayan Dey; Prasanta Kumar Guha; Tarun Kanti Bhattacharya; “ZnO/γ-Fe2O3 heterostructure towards high performance Acetone sensing”, IEEE Sensors journal, 2019, Vol. 19(9), 8576-8582, DOI: 10.1109/JSEN.2019.2921421
18. Sayan Dey; Sumita Santra; Prasanta Kumar Guha; Samit Kumar Ray; “Liquid exfoliated NiO nanosheets for trace level detection of acetone vapours”, IEEE Transactions on Electron Devices, 2019, Vol. 66(8), 3568-3572, DOI: 10.1109/TED.2019.2922704
19. Sayan Dey; Soumik Podder; A. Roychowdhury; Dipankar Das; Chandan K. Ghosh; “Facile synthesis of hierarchical nickel (III) oxide nanostructure: A synergistic remediating action towards water contaminants”, Journal of Environmental Management, 2018, Vol. 211, 356-366, DOI: https://doi.org/10.1016/j.jenvman.2018.01.009
20. Sayan Dey; Sumita Santra; Samit Kumar Ray; Prasanta Kumar Guha; “Coral like CuxNi(1-x)O based resistive sensor for humidity and VOC detection”, IEEE Sensors Journal, 2018, Vol. 18(15), 6078-6084, DOI: 10.1109/JSEN.2018.2844192
21. Sayan Dey; Sumita Santra; Sabyasachi Sen; Debasree Burman; Samit K Ray; Prasanta K Guha; “Photon assisted ultra-selective Formaldehyde sensing by defect induced NiO based sensing layer”, IEEE Sensors Journal, 2018, Vol. 18(14), 5656-5661, DOI: 10.1109/ICSENS.2017.8234446
22. Inderjeet Singh; Sayan Dey; Sumita Santra; Katharina Landfester; Rafael Mu±oz-Esp­; Amreesh Chandra; “Cerium-doped Copper (II) Oxide Hollow Nanostructures as Efficient and Tunable Sensors for Volatile Organic Compounds”, ACS Omega, 2018, Vol. 3(5), 5029-5037, DOI: https://doi.org/10.1021/acsomega.8b00203
23. Swarupananda Bhattacharjee; Arka Dey; Sayan Dey; A Roychowdhury; Partha Ray; Dipankar Das; Gopes Das; Chandan Ghosh; “Electron ” phonon interaction to tune metal ” semiconductor junction characteristics: ultralow potential barrier and less non-thermionic emission”, Physica B: Condensed Matter, 2018, Vol. 547, 101-110, DOI: https://doi.org/10.1016/j.physb.2018.08.011
24. Shyamasree Gupta Chatterjee; Sayan Dey; Dhrubajyoti samanta; Sumita Santra; Somenath Chatterjee; Prashanta K Guha; “Near Room Temperature Sensing of Nitric Oxide Using SnO2/Ni-decorated Natural Cellulosic Graphene Nanohybrid Film”, Journal of Materials Science: Materials in Electronics, 2018, Vol. 29, 20162 ” 20171, DOI: https://doi.org/10.1007/s10854-018-0149-z
25. Sayan Dey; Sumita Santra; Anupam Midya; Prasanta Kumar Guha; Samit Kumar Ray, “Synthesis of CuxNi(1−x)O coral-like nanostructures and their application in the design of a reusable toxic heavy metal ion sensor based on an adsorption-mediated electrochemical technique”, Environmental Science: Nano, 2017, Vol. 4, 191-202, DOI: 10.1039/C6EN00285D
26. Raj Shekhar Bose; Sayan Dey; Saswati Saha; Chandan Kumar Ghosh, Mahua Ghosh Chaudhuri; “Enhanced removal of dissolved aniline from water under combined system of nano zero-valent iron and Pseudomonas putida”, Sustainable Water Resources Management, 2016, Vol. 2, 143-159, DOI: https://doi.org/10.1007/s40899-016-0045-8
27. Sayan Dey; Swarupananda Bhattacharjee; Raj Shekhar Bose; Chandan Kr. Ghosh “Room temperature synthesis of hydrated nickel (III) oxide and study of its effect on Cr (VI) ions removal and bacterial culture”, Applied Physics A: Materials Science & Processing, Spinger, March, 2015, Vol. 119(4), 1343-1354, DOI: https://doi.org/10.1007/s00339-015-9101-8
28. Sayan Dey; Swarupananda Bhattacharjee; Mahua Ghosh Chaudhuri; Raj Shekhar Bose; Suman Halder; Chandan Kumar Ghosh “Synthesis of pure nickel (III) oxide nanoparticles at room temperature for Cr(VI) ion removal”, RSC Advances, 2015, Vol. 5, 54717-54726, DOI: 10.1039/C5RA05810D

Positions held:

1. Assistant Professor (December 2022 – present), School of Electrical Sciences, IIT Bhubaneswar

2. Visiting Scientist (Fulbright – Nehru Post-Doctoral Fellow) (October 2021 – December 2022), Department of Electrical Engineering, Columbia University in the city of New York, NY, USA

3. Post-Doctoral Fellow (February 2021 – October 2021), Department of Electrical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, Maharashtra

4. Project Research Scientist (January 2021 – February 2021), Department of Electrical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, Maharashtra

5. Junior Research Fellow (July 2015 – December 2015), Department of Physics, Indian Institute of Technology, Kharagpur, Kharagpur 721302, West Bengal

6. Assistant Systems Engineer (March 2012 – August 2013), Tata Consultancy Services Limited., G3 Oval, Unitech, Newtown, Kolkata 700156