1. Keynote speaker at “3^rd International Conference on Optics, Photonics, and Lasers” held during November 18-19, 2024 at Dubai, UAE.
2. Invited speaker at “Symposium on Advancing Materials for a Sustainable Future” during September 29-30, 2024 at Sathyabama Institute of Science and Technology, Chennai.
3. Resource person at One day Lecture series on 6^th August 2024 at School of Sciences, JC Road Campus, Jain University.
4. Resource person at IMIEU workshop during 11th March 2024 at Netherland.
5. Invited speaker at Materials Research Society of India (MRSI) conference 2023 during December 12-15 at IIT BHU, Varanasi, India.
6. Invited speaker at Recent Progress in Graphene and 2D Materials Research (RPGR) 2023 during 20-23 November at IISC Bangalore, India.
7. Invited speaker at 1st National Conference on “Advances in Low-dimensional Materials for Optoelectronic and Nano Devices (ALMOND 2023)” during March 03-05, 2023 March at IOP Bhubaneswar, India.
8. Invited speaker at Recent Progress in Graphene and 2D Materials Research (RPGR) during 13-17 November 2022 at Taipei, Taiwan.
9. Invited speaker at 3^rd World Congress on Nano Science, Nanotechnology and Advanced Materials during 02-03 November 2022 at Dubai, UAE.
10. National Science Day Talk at Institute of Science, Nagpur on 28^th February 2022.
11. Resource Person at Short-Term Course on Materials Engineering from Synthesis to Applications on February 21-26, 2022 organized by Dept. of MEMS, IIT Indore.
12. Lecture at monthly discussion meeting on 18^th December 2021 organized by Dept. of Chemistry, IIT Madras, India.
13. Resource person at workshop on “2D Materials: Fundamentals to Applications”, on September 20, 2021 organized by SRM Institute of Science and Technology, Chennai, India.
14. The Guru Talk at IIT Madras Alumni Association on 21^st May 2021 organized by Dean of Alumni affairs, IIT Madras, India.
15. Invited Talk at “Webinar on Nanotechnology and Nanomedicine” during March 24-25, 2021 organized by PHRONESIS.
16. Resource person at workshop on “Nanomaterials and Their Applications” during 23-27 November 2020 at NIT Manipur, India.
17. Invited speaker at Global Virtual submit on “ Materials Science and Engineering” during September 11-12 at Materials Chemistry 2020.
18. Colloquium speaker at department of physics IIT Jammu on September 2020.
19. Resource person at “ Webinar Series on Recent Advances in Physics” on 14^th September 2020 organized by dept. of Physics, NIT Meghalaya.
20. Keynote speaker at Workshop on NEMS Technologies “Modern Interdisciplinary approach in Engineering, NEMS TECH 2020” at NIT Silchar, 17-21 August, 2020.
21. The Guru Talk at IIT Madras Alumni Association on 29^th July 2020 organized by Dean of Alumni affairs, IIT Madras, India.
22. Resource person at Faculty Development Programme on “Design and Development of Materials for Technological Applications” during 21-26 October 2019 at VSSUT, Burla, Odisha, India.
23. Session Chair at International Conference on "Frontiers in Materials from Basic Science to Real-time Applications (F2DM) at Centre for Nano and Materials Sciences (CNMS)", Jain University, Bangaluru, India, 13-16 March 2019.
24. Invited speaker at 45th International Conference on Metallurgical Coatings & Thin Films (ICMCTF) Town &Country Convention Center, San Diego, CA, USA, 24th April, 2018.
25. Invited speaker at International Conference on Laser Deposition (iCOLD2017), Dept. of Physics, IIT Madras, 22^nd  November 2017.

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