Department of Electronics and Communication Engineering

1. Life time member ISTE
2. Senior Member IEEE
3. Senior Member INAE
4. Fellow IEI

1. Workshop on AI, ML & IoT in the Dept of ECE, NERIST 19th – 21st April 2025 in collaboration with Uniconverge Technologies, Noida.
2. Program Co-Chair of 9th International Conference on Internet of Things and Connected Technologies (ICIoTCT) 2024,  27-28 September 2024 National Institute Of Technology, Mizoram.
3. 3^rd International Conference on Computational Intelligence & IoT (ICCIIoT-2022) held during 24–25 February 2023 at NERIST, Nirjuli, Arunachal Pradesh, India [Conference Chair]
4. 2^nd International Conference on Computational Intelligence & IoT (ICCIIoT) 2021 held during 23-24 February, 2022 at North Eastern Regional Institute of Science and Technology (NERIST), Nirjuli, Arunachal Pradesh, India [Conference Co-chair ]
5. 8^th International Conference on Computers, Management & Mathematical Sciences (ICCM) 2022, scheduled to be held on 29-30 July 2022 at North Eastern Regional Institute of Science and Technology (NERIST), Nirjuli, Itanagar, Arunachal Pradesh, India [Conference Co-chair ]
6. Organized 6 days Faculty Development Programme on Recent Advances in Signal Processing and Semicon- ductors Devices, Sponsored by TEQIP (MHRD-World Bank Project) in the Department of Electronics & Communication Engineering, NERIST, Nirjuli, Itanagar, Arunachal Pradesh, India during 24th - 29th Jan- uary, 2014.
7. Coordinated the one-week Faculty Development Programme on “Antenna Trends ” jointly organised by Electronics and ICT Academies held from 1st - 5th July, 2019, through National Knowledge Network under the ”Scheme of financial assistance for setting up of Electronics and ICT Academies ” of the Ministry of Electronics and Information Technology (MeitY), Government of India.
8. Coordinated the one-week Faculty Development Programme on “VLSI Chip Design Hands on using Open Source EDA ” jointly organised by Electronics and ICT Academies held from 8th -12th July, 2019, through National Knowledge Network under the ”Scheme of financial assistance for setting up of Electronics and ICT Academies ” of the Ministry of Electronics and Information Technology (MeitY), Government of India.
9. Coordinated the one-week Faculty Development Programme on “ICT Tools and Techniques for Teaching, Learning Process and Institutes” jointly organised by Electronics and ICT Academies held from 13th -16th January, 2020, through National Knowledge Network under the ”Scheme of financial assistance for setting up of Electronics and ICT Academies ” of the Ministry of Electronics and Information Technology (MeitY), Government of India .
10. Coordinated the two-week Faculty Development Programme on “Embedded UVM Open Source Emulation & Functional Verification” jointly organised by Electronics and ICT Academies held from 13th -24th July, 2020, through National Knowledge Network under the ”Scheme of financial assistance for setting up of Electronics and ICT Academies ” of the Ministry of Electronics and Information Technology (MeitY), Government of India.
11. Proctor Coordinator in a two-week Online Faculty Development Programme on “ICT Tools for Teaching, Learning Process and Institute” jointly organized by Electronics and ICT Academies held from 10th - 21st August, 2020 under the Scheme of financial assistance for setting up of Electronics and ICT Academies ” of the Ministry of Electronics and Information Technology (MeitY), Government of India.
12. Coordinated the two-week Online Faculty Development Programme on “Digital Tools for Writing, Authoring & Reviewing Manuscripts” jointly organised by Electronics and ICT Academies held from 21st September – 2nd October, 2020 under the “Scheme of financial assistance for setting up of Electronics and ICT Academies” of the Ministry of Electronics and Information Technology (MeitY), Government of India.

1. Invited lecture on Plasma Immersion Ion Implantation, promises and challenges, in Recent Advances in Signal Processing and Semiconductor Devices held in Dept of ECE, NERIST from 24-29th Jan 2014 sponsored by TEQIP-(MHRD-World Bank Project)

2.Invited lecture during the short term course on “Application of Synopsys Sentaurus TCAD Tool in Modelling Devices” organised by E&ICT Academy IIT Guwahati in Association with National Institute of Technology Mizoram under TEQIP-III held from 8th - 12th October, 2018 in the Department of ECE, NIT Mizoram, India.

3.Delivered a talk on “Open Source Circuit and Device Simulation” in the 3rd One-Week National Workshop on Emerging Tools and technologies in research on the 15th of December 2020, organised by the Dept. of Information Technology, Tripura University, India.

4.Delivered a talk on “Digital Technologies for Older Persons and Healthy Ageing” during the Celebration of World Telecommunication and Information Society Day On 10th June, 2022 Jointly Organized by The Institution of Engineers (India), Mizoram State Centre in collaboration with National Institute of Technology Mizoram, India.

Journal:

1. Ashok Ray, Rajashree Nori, Piyush Bhatt, Saurabh Lodha, Richard Pinto, Valipe Ramgopal Rao, and François Jomard, Michael Neumann-Spallart, “Optimization of a Plasma Immersion Ion Implantation Process for Shallow Junctions in Silicon,” Journal of Vacuum Science & Technology A, vol. 32, no. 6, September 2014, pp. 061302-1–9, https://doi.org/10.1116/1.4896756.
2. Dheeraj Kumar  Sinha, M. Salahuddin Ansari, Ashok Ray, Gaurav Trivedi, Amitabh Chatterjee and Ronald D. Schrimpf, "Fast Ionization-Front-Induced Anomalous Switching Behavior in Trigger Bipolar Transistors of Marx-Bank Circuits Under Base-Drive Conditions," in IEEE Transactions on Plasma Science, vol. 46, no. 6, pp. 2064-2071, June 2018, DOI: 10.1109/TPS.2018.2835465.
3. Ashok Ray, Sushanta Bordoloi , Biplab Sarkar, Pratima Agarwal, Gaurav Trivedi, "Numerical Simulation of Enhanced-Reliability Filleted-Gate AlGaN/GaN HEMT", Journal of Electronic Materials, 2020, Vol 49, No. 3, pp. 2018–203
4. L. Arivazhagan, D. Nirmal, P. Pavan Kumar Reddy, J. Ajayan, D. Godfrey, P. Prajoon and Ashok Ray, "A Numerical Investigation of Heat Suppression in HEMT for Power Electronics Application," Silicon, pp. 1–8,   2020, https://doi.org/10.1007/s12633-020-00647-3
5. Sushanta Bordoloi, Ashok Ray and Gaurav Trivedi, "Introspection into Reliability Aspects in AlGaN/GaN HEMTs with Gate Geometry Modification," in IEEE Access, doi: 10.1109/ACCESS.2021.3096988. (2021, July)
6. Sushanta Bordoloi, Ashok Ray and Gaurav Trivedi, “ Access Region Stack Engineering for Mitigation of Degradation in AlGaN/GaN HEMTs ,” IEEE Transaction on Device and Materials Reliability, Vol . 22, No. 1, March 2022.
7. Nabojwal Acharjee, Sarita Singh, Anil Prasad Dadi, Sushanta Bordoloi and Ashok Ray, “Investigation of High-k Dielectric Passivation Effects on DC Performance of AlN/ β -Ga2O3 HEMTs,” Semiconductors, Springer, vol. 59, no. 5, 2025, pp. 452–464, https://doi.org/10.1134/S1063782624602632.
8. Ellapu Bhanu Prakash, Bhukya Harini, Ashok Ray and Sushanta Bordoloi, “Effect of Ge Mole Fraction on Performance Characteristics of Si 1−x Ge x -based Double Gate Field Effect Transistors,” Semiconductors, Springer, vol. 59, no. 7, 2025, pp. 711–723, https://doi.org/10.1134/S1063782625600536.
9. Sarita Singh, Alokojjwal Das, Sushanta Bordoloi and Ashok Ray, “Design Optimization of AlGaN/GaN HEMT Biosensors for Enhanced Biomolecule Sensitivity: Gate Dielectric and Spacing Effects,” Semiconductors, Springer, vol. 59, no. 11, 2025, pp. 1213–1225, https://doi.org/10.1134/S1063782625602468.
10. Ellapu Bhanu Prakash, Anil Prasad Dadi, Vijay Maitra, Tathagata Ghose, Pranjal Barman, Ashok Ray and Sushanta Bordoloi, ”Enhancing Breakdown Voltage and Switching Performance in AlGaN/GaN HEMTs via GaN Cap and Field Plate Co-Design,” Semiconductors, Springer, vol. 59, no. 12, 2025, pp. 1328–1342, https://doi.org/10.1134/S1063782 62560305X. • Ellapu Bhanu Prakash, Bhukya Harini, Ashok Ray and Sushanta Bordoloi, “Investigating the Temperature-Induced Variations on the DC, Linearity Distortion and Analog/RF Performance of Ge-Source DG-TFETs,” Advanced Theory and Simulations, Wiley Online, pp. e01278, 2025, https://doi.org/10.1002/adts.202501278.
11. Anil Prasad Dadi, Ellapu Bhanu Prakash, Vijay Maitra, Ashok Ray and Sushanta Bordoloi, “Design and optimization of a buffer-free AlGaN/GaN HEMT with dielectric stack engineering for high power and frequency applications,” AEU International Journal of Electronics & Communications, vol. 264, 2026, pp. 156102, https://doi.org/10.1016/j.aeue .2025.156102.

Book Chapters

1. Ashok Ray, Gaurav Kumar, Sushanta Bordoloi, Dheeraj Kumar Sinha, Pratima Agarwal and Gaurav Trivedi, “FEM Based Device Simulator for High Voltage Devices” in International Symposium on VLSI Design and Test, pp. 127–135. Publisher: Springer, Singapore (2017, June), eBook ISBN-978-981-10-7470-7.
2. Sushanta Bordolo, Ashok Ray, and Gaurav Trivedi, “Simulation framework for GaN devices with special mention to reliability concern” VLSI and Post-CMOS Electronics: Devices, Circuits and Interconnects, Vol-2 (2019, Sept), pp. 63–83. IET Digital Library, e-ISBN: 978-1-83953-054-8.
3. Amit Kumar Chaturvedi, Pranja Barman, Ashok Ray, Sushanta Bordolo, “Design and Analysis of Dual AlN/SiN Passivation Layer for Mitigation of Self-heating in HEMTs” in Artificial Intelligence in Internet of Things (IoT): Key Digital Trends, Proceedings of 8th International Conference on Internet of Things and Connected Technologies (ICIoTCT 2023), Lecture Notes in Networks and Systems 1072, Springer Nature Singapore Pte Ltd, e-ISBN 978-981-97-5786-2.
4. Ashok Ray, P Barman and S Bordoloi (2025). On the Mitigation of Current Collapse Phenomenon in Gate-Shaped AlGaN/GaN HEMTs. In: Lin, F., Patel, A., Kesswani, N., Sambana, B. (eds) Applications of Computational Intelligence in Management and Mathematics II. ICCM 2023. Springer Proceedings in Mathematics & Statistics, vol 493. Springer, Cham. https://doi.org/10.1007/978-3-031-84513-0_35
5. V. Maitra, A. P. Dadi, E. B. Prakash, T. Ghose, Ashok Ray, and S. Bordoloi, (2025). Optimizing the Design of Non-Linear Power Amplifier Using an Advanced Small-Signal Model for AlGaN/GaN HEMT. In: Lin, F., Kesswani, N., Patel, A., Bordoloi, S., Koley, C. (eds) Integration of Artificial Intelligence in IoT: Opportunities and Challenges. ICIoTCT 2024. Lecture Notes in Networks and Systems, vol 1361. Springer, Singapore. https://doi.org/10.1007/978-981-96-591 8-0_31

International Conferences:

1. Debnath, Shreyasee; Tamuli, Manashwi; Ray, Ashok; Trivedi, Gaurav, "A review on accelerating scientific computations using the Conjugate Gradient method," Electronic Design, Computer Networks & Automated Verification (EDCAV), 2015 International Conference on , vol., no., pp.150,153, 29-30 Jan. 2015 doi: 10.1109/EDCAV.2015.7060557
2. Ansh; Yadav, Rakesh; Deb, Debajyoti; Ray, Ashok, "Multi-purpose auto-programmable reconfigurable embedded system architecture," Electronic Design, Computer Networks & Automated Verification (EDCAV), 2015 International Conference on , vol., no., pp.48,51, 29-30 Jan. 2015 doi: 10.1109/EDCAV.2015.7060537 
3. M. Tamuli, S. Debnath, A. Ray and S. Majumdar, "Implementation of Jacobi iterative solver in verilog HDL," 2016 2nd International Conference on Control, Instrumentation, Energy & Communication (CIEC), Kolkata, 2016, pp. 103-105, doi: 10.1109/CIEC.2016.7513747.
4. Gaurav  Kumar, Mandeep Singh, Ashok Ray and G. Trivedi, "An FEM based framework to simulate semiconductor devices using streamline upwind Petrov-Galerkin stabilization technique," 2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA), Brno, 2017, pp. 1-5, doi: 10.1109/RADIOELEK.2017.7936644.
5. Pankaj Kumar, Syed Samsuz Zaman, Manash Pratim Sarma, Ashok Ray and Gaurav Trivedi, "Basic CMOS Gate Design by Mixed-Mode Analysis of Step-Channel TMDG-MOSFET". 2017 IEEE International Symposium on Nanoelectronic and Information Systems (iNIS), Bhopal, 2017, (pp. 173-178),  December, 2017
6. Syed Samsuz Zaman, Pankaj Kumar, Manash Pratim Sarma, Ashok Ray and Gaurav Trivedi, "Design and Simulation of SF-FinFET and SD-FinFET and Their Performance in Analog, RF and Digital Applications," 2017 IEEE International Symposium on Nanoelectronic and Information Systems (iNIS), Bhopal, 2017, pp. 200-205, doi: 10.1109/iNIS.2017.49.
7. Koushik Bharadwaj, Ashok Ray, Sushanta Bordoloi and Gaurav Trivedi, "Current Collapse Reduction Technique Using N-Doped Buffer Layer into the Bulk Region of a Gate Injection Transistor," 2019 32nd International Conference on VLSI Design and 2019 18th International Conference on Embedded Systems (VLSID), Delhi, NCR, India, 2019, pp. 494-495, doi: 10.1109/VLSID.2019.00103.
8. Ashok Ray, Sushanta Bordoloi, Pratima Agarwal, Gaurav Trivedi, “Investigation of electrical aspect in lateral and vertical SiC Diodes”, poster in XXth International Workshop on Physics of Semiconductor Devices organized by S. N. Bose National Centre for Basic Sciences, Kolkata and IIT Kharagpur from 17-20 December 2019 Novotel Hotel And Residences, Kolkata, India
9. Sushanta Bordoloi, Ashok Ray and Gaurav Trivedi, “Numerical analysis of the Impact of Gate Geometry variations on the Reliability of AlGaN/GaN HEMT” 2021 IEEE 4th International Conference on Computing, Power and Communication Technologies (GUCON) on 24-26 September , 2021 University of Malaya, Kuala Lumpur, Malaysia.
10. Ellapu Bhanu Prakash, Vijay Maitra, Anil Prasad Dadi, Ashok Ray and Sushanta Bordoloi, ”Investigation of AlGaN/GaN HEMT Device Performance with Variation of GaN Cap Layer Thickness along with Doping Concentration,” 2024 15th International Conference on Computing Communication and Networking Technologies (ICCCNT), Kamand, India, 2024, pp. 1-6, doi: 10.1109/ICCCNT61001.2024.10724793.
11. A. P. Dadi, E. B. Prakash, V. Maitra, A. Ray and S. Bordoloi, ”Effect of Buried depth, Thickness of Channel and Gate length on Breakdown Voltage in AlGaN/GaN HEMT,” 2024 12th International Conference on Internet of Everything, Microwave, Embedded, Communication and Networks (IEMECON), Jaipur, India, 2024, pp. 1-6, doi: 10.1109/IEMECON62401.2024.10846033.
12. E. B. Prakash, A. Ray and S. Bordoloi, ”Evaluating the Effect of the Varying Field Plate’s Length on the Performance of a GaN HEMT with a Graded AlGaN Back Barrier,” 2025 8th International Conference on Trends in Electronics and Informatics (ICOEI), Tirunelveli, India, 2025, pp. 174-179, doi: 10.1109/ICOEI65986.2025.11013608.
13. S. Singh, S. Bordoloi and A. Ray, ”Effect of Barrier Layer Thickness on the Sensing Performance in AlGaN/GaN HEMTBased Bio-Sensors,” 2025 IEEE Guwahati Subsection Conference (GCON), Itanagar, India, 2025, pp. 1-6, doi: 10.1109/GCON65540.2025.11173419.
14. S. Singh, S. Bordoloi and A. Ray, ”On the Sensing Strategy and Approaches of Liquid Sensors based on AlGaN/GaN HEMTs,” 2025 IEEE Guwahati Subsection Conference (GCON), Itanagar, India, 2025, pp. 1-6, doi: 10.1109/GCON65540.2025.11173389.

National Conference:

1. D.Debnath, A.Choudhury, A.Chakraborty, A.K.Ray, S.Majumder.MATLAB Based Motion Detection Circuit National Conference Mathematical Techniques: Emerging Paradigms for Electronics and IT Industries (MATEIT '10), . Department of Electronics, Deen Dayal Upadhyaya College, New Delhi INDIA National Conference pg TS-6.2.1-4