1. Hierarchical Self-Organization of Rigid-Rod Molecules: From Tertiary beta-Barrel to Quarternary beta-Fibril Structures. "Lipids and Biomembranes: New Technologies" October 2-5, 2002, Davos, Switzerland.
2. Practical Fluorimetric Sensing Applications of Rigid-Rod beta-Barrel Ion Channels. Fall Meeting of the Swiss Chemical Society, October 17, 2002, Basel Switzerland.
3. Applications of Gaussian software UGC refresher course on "Theoretical and Computational Chemistry", December 8-28, 2003, Birla Institute of Technology and Science, Pilani, Rajasthan, India.
4. Fluorometric Detection of Enzyme Activity with Synthetic Supramolecular Artificial beta-Barrel National Symposium on Chemistry at the Inorganic and Organic Interphase December 6-7, 2004, IIT Guwahati, India.
5. Langmuir-Blodgett Films and Their Use in Molecular Electronics QIP Short term course on "Semi-conducting organics as future generation electro-optical materials" June 20-24, 2005, IIT Guwahati, India.
6. Photo-induced electron transfer (PET) sensors, switches and logic gates QIP Short term course on "Semi-conducting organics as future generation electro-optical materials" June 20-24, 2005, IIT Guwahati, India.
7. Natural and Synthetic Polycarboxylate as a Crystal Growth Modifier of Calcium and Barium Biominerals Modern Trends in Inorganic Chemistry (MTIC-XI) December 8-10, 2005, IIT Delhi, India.
8. Biomineralization: Future of Inorganic Chemistry Kalyani University, Kalyani, West Bengal, June 2006.
9. Luminescence Spectroscopy: Application in analytical chemistry UGC refresher course on "Current Trends in Chemistry with special emphasis on Analytical Techniques" March 11-31, 2007. Gauhati University, Guwahati, Assam, India.
10. Synthesis of Inorganic Mineral through Precursor Complexes Discussion meeting on "Crystal Engineering and Noncovalent Interactions: Contemporary Themes and Futuristic Developments" February 22-25, 2009. Orange County, Coorg, India.
11. Fluorescence Spectroscopy: Principle and Application UGC sponsored course on "2nd Scholars Programme in Sciences (II)" March 25, 2009 Gauhati University, Guwahati, Assam, India.
12. X-ray Diffraction and NMR: An Ultimate Tool for Screening Bio-active Molecules QIP Short term course on "Approaches To The Screening Of Bioactive Molecules From Natural Resources" July 13-17, 2009, IIT Guwahati, India.
13. Peptide Drugs: Synthesis to Application QIP Short term course on "Advances in Drug Discovery " July 20-24, 2009, IIT Guwahati, India.
14. Fluorescence Spectroscopy and it's Application 10th Refresher Course on Chemistry, March 8, 2010 Gauhati University, Guwahati, Assam, India.
15. Biomineralization: The Nature's Architect 10th Refresher Course on Chemistry, March 8, 2010 Gauhati University, Guwahati, Assam, India.
16. Inorganic nanomaterials: towards fabrication of different strategic tools for biological and environmental application 3rd Asian Conference on Coordination Chemistry, October 17-20, 2011, New Delhi, India.
17. Supramolecular Chemistry of Anion: Molecular Recognition and Self-Assembly in Tripodal Scaffolds Frontier Areas of Research in Chemistry, October 24, 2011, Cotton College, Assam, India.
18. Oxidative Cyclization of Thiosemicarbazone: An Optical and Turn-on Fluorescent Chemodosimeter for Cu(II) Emerging Trends in Chemical Sciences, March 30-31, 2012, Gauhati University, Assam, India.
19. Chemosensor for anions Sensors and its Application, November 15, 2013, Institute of Advanced Study in Science and Technology, Assam, India.
20. Inorganic Nanomaterial Interfaces between Chemistry and Biology QIP Short term course on "Molecular tools in Medical Biotechnology Investigations" December 2-6, 2013, IIT Guwahati, India.
21. Selective Detection of Cations and Anions in Physiological Conditions and their Application in Biological Milieu "Modern Trends in Inorganic Chemistry" (MTIC-XV) December 13-16, 2013, IIT Roorkee, India.
22. Anion or Anion-water Assisted Capsular Assembly: A Journey from First to Second Generation Tripodal Recent Trends in Fundamental and Applied Chemical Sciences (RTFACS-2014) November 19-21, 2014, Dirugarh University, Assam, India.
23. Supramolecular Chemistry at Work: Chemosensor for Anions National Seminar on “Recent Advances in Chemical Science and Application” January 6-7, 2017, Department of Chemistry, Vidyasagar College for Women (VCFW), Kolkata.
24. Positional Isomeric Effect of Substituents on Supramolecular Anion-Assemblies of Diamine Based Urea Receptors CHEMCONVENE 17 July 25, 2017, Department of Chemistry, IIT Guwahati, Assam, india.
25. Supramolecular Anion-Assemblies: A Lesson on Positional Isomeric Effect October 16, 2017, NIT Agartala, Tripura.
26. Antibacterial Zinc-Complexes: Structure Guided Lesson "Modern Trends in Inorganic Chemistry" (MTIC-XVII) December 11-14, 2017, NCL Pune, IISER Pune, Pune University, India.
27. A Dual Functional Fluorogenic Probe for Differential Spectroscopic Detection of Hg(II) and Ag(I) Ions via Two Distinct Sensing Mechanisms National Conference on Advances in Spectroscopy: Molecules to Materials (NCASMM 2018), October 4-6 2018, Institute of Infrastructure, Technology, Research and Management (IITRAM), Ahmedabad.
28. A Multi-Functional Aggregation-Induced Emission (AIE) Active Luminogens Renders Al(III) Sensing and Subsequent Tracking of Interaction with DNA National Seminar on Contemporary Challenges in Chemistry (NSC3-2018) November 20-21, 2018 NEHU, Shillong.
29. Synthetic Amphiphiles: A Journey from Laboratory to Cell “Therapeutic Materials : Techniques and Applications” January 19-20, 2019, Department of BSBE, IIT Guwahati, Assam, india.