1. Biji.P and A.Patnaik., Electron transport across monolayer containing macrocycle-capped gold nanoclusters., International Conference on Molecules to Materials (ICMM 2006), March 3-4, 2006

2. Biji.P and A.Patnaik., Fabrication of surfactant assisted gold nanostructures by Langmuir-Blodgett technique., Eighth International Conference on Nanostructured Materials (NANO 2006), Indian Institute of Science, Bangalore, August 20-25, 2006

3. Biji.P and A.Patnaik., Phase states and stability of the in-situ formed 2D arrays of Tetraoctylammonium Bromide anchored gold colloids., Annual IIT Madras Chemistry Symposium & The First Mid-Year Meeting of the CRSI, IIT Madras, July 12-13, 2006

4. Biji.P and A.Patnaik., Electron Transport through Surface-Confined Highly Oriented Nanostructures., European School on Nanosciences and Nanotechnologies (ESONN’07),Grenoble, France, August 25-September 15, 2007

5. Biji.P and A.Patnaik., Odd-Even Parity Effects in TOAB Anchored Interfacial Gold Nanoclusters, International Conference on Advanced Materials (ICAM 2008), Mahatma Gandhi University, Kerala, February 18-21, 2008.

6. Biji.P and A.Patnaik., 2D Janus gold cluster arrays as nano-molecular capacitors, International Conference on Functional Materials (FM 2008), IIT Madras, November 27-29, 2008 (Best Poster Award).

7. S.Prasanna, P.Biji, G.Mohan Rao, M.D.Kannan and S.Jayakumar, Dielectric studies on DC reactive magnetron sputtered Al₂O₃ thin films, “International Materials Research Congress (IMRC 2010)”, Cancun-Mexico, August 15 – 19, 2010

8. S.Prasanna, P.Biji, G.Mohan Rao, M.D.Kannan and S.Jayakumar, Structural and Dielectric Properties of Reactive Magnetron Sputtered Al₂O₃ Thin Films, International Conference on Nanomaterials and Nanotechnology (NANO 2010), K.S.Rangasamy College of Technology, Tiruchengode, Namakkal, December 13–16, 2010

9. V.P. Dinesh and P.Biji, Hybrid ZnO@Au Core-Shell Nanostructures for Trace Level Sensing of NH₃ Gas for Safety and Environmental Applications, National Workshop on Nanotechnology for Defense Applications (NWNDA-2011), SSPL, New Delhi, November 16-17, 2011

10. A.Sukhananazerin, P.Biji, Functionalized Carbon Nanotube Based Ammonia Gas Sensors for Environmental and Safety Applications, National Workshop on Nanotechnology for Defense Applications (NWNDA-2011), SSPL, New Delhi, November 16-17, 2011

11. P.Biji, M.Kumaravel, A.K.Tyagi, M.Kamaruddin and V.P.Dinesh, Development of Core-Shell Nanoparticles Based Gas Sensors, Technology & Engineering Exhibition (TechEx 2011), Codissia Trade Fair Complex, November 25-27, 2011

12. P.Biji, Bindu Salim, Anju Gupta, T.Lazar Mathew, P.Radhakrishnan, A.Sukhananazerin and D.Jayaseelan, Development of Portable Toxic Gas Sensors Based on Hybrid Metal Nanoparticles-SWNT Composite Nanofibers For Environmental Monitoring, Technology & Engineering Exhibition (TechEx 2011), Codissia Trade Fair Complex, November 25-27, 2011

13. V.P.Dinesh, Anuradha Ashok and P.Biji, Hybrid Silver Nanowires for Trace Level Sensing of NH₃ Gas for Environmental Applications, 4^th Bangalore Nano 2011, Royal Orchid Resort & Convention Centre, Bangalore, December 8-9, 2011

14. A.Sukhananazerin and P.Biji Development of ZnO Nanotube Based Photoelectrodes for Dye-Sensitized Solar Cell Applications, International Conference on Advanced Materials (ICAM 2011), PSG College of Technology, Coimbatore, December 12-16, 2011

15. G.R. Rakesh, G.S.Ranjit, P.Biji and P.Radhakrishnan, Production of Aligned Nano and Microfibers by Electrospinning Using Slotted Collector Plates, International Conference on Advanced Materials (ICAM 2011), PSG College of Technology, Coimbatore, December 12-16, 2011

16. R.Sriram kumar, P.Biji, P.Manoj Kumar and P.Radhakrishnan, Development of Cost-Effective, Eco-Friendly Dye-Sensitized Solar Cells, International Conference on Advanced Materials (ICAM 2011), PSG College of Technology, Coimbatore, December 12-16, 2011

17. S.Prasanna, P.Biji, G.Mohan Rao, S.Jayakumar and M.D.Kannan, Deposition and Characterization of Al₂O₃ Thin Films by DC Reactive Magnetron Sputtering, International Conference on Advanced Materials (ICAM 2011), PSG College of Technology, Coimbatore, December 12-16, 2011

18. V.P. Dinesh, P.Biji, M.Kumaravel, A.K.Tyagi and M.Kamaruddin, Synthesis and Characterization of Hybrid ZnO@Ag Core-Shell Nanospheres for Gas sensor Applications, International Conference on Advances in Metallic Materials and Manufacturing Processes for Strategic Sectors (ICAMPS 2012), The Indian Institute of Metals (IIM), Thiruvandapuram, January 19-21, 2012

19. S.P.Suriyaraj, M.Benasir Begam, S.G.Deepika, P.Biji, R. Selvakumar, Photocatalytic removal of Nitrate ions from drinking water using electrospun TiO₂ blended PAN Nanofibers, First International Conference on Emerging Technologies for Clean Water Department of Chemistry, Indian Institute of Technology, Madras, September 14- 16, 2012.

20. M.Silambarasan, R.Selvakumar, P.Biji, Anju Gupta, V.P.Dinesh, S.Aravindh Development of Uranium Biosensor Using Microbial S-Layer Coated Gold Nanoparticle Conjugate System, 2^nd National Conference on Micro and Nanotechnologies (NCMN-2012) 12^th May 2012.

21. V. P. Dinesh, P.Biji, Arun K Prasad, A.K. Tyagi, Enhanced ammonia sensing properties using Au decorated ZnO nanorods, IEEE SENSORS 2013, Baltimore, Maryland USA, November 3-6, 2013.

22. A. Sukhananazerin, S. Pradeep, P. Biji and T. Lazar Mathew, Highly water soluble poly(m-amino benzene sulfonic acid) functionalized MWCNTs Based Nanocomposites for NH₃ Gas Sensors, International conference on Advanced Polymeric Materials 2013 (ICAPM 2013), Mahatma Gandhi University, Kottayam, 11-13^th, October, 2013 (Best Poster Award).

23. Keerthi G. Nair and P. Biji, Fabrication of Langmuir monolayers of aligned silver nanowires using Poly (vinyl pyrrolidone) as a structure directing agent, International conference on Advanced Polymeric Materials 2013 (ICAPM 2013), Mahatma Gandhi University, Kottayam, 11-13^th, October, 2013.

24. Jayaseelan D, Bindu Salim, Sukhananazerin A, Biji P and Lazar Mathew T, ZigBee based Wireless System for f-MWCNT based Ammonia Gas Sensor for Clinical Breath Analyzer Applications, International Conference on Innovative Trends In Electronics Communication and Application – 2013 (ICIECA-2013), 27-29^th December, 2013.

25. A. Sukhananazerin, P. Biji and T. Lazar Mathew, Fabrication of NH₃ Gas Sensors Based on Highly Oriented Langmuir Monolayers of PANI/MWCNTs for Clinical Breath Analyzer Applications, International Union of Materials Research Societies–International Conference in Asia – 2013 (IUMRS-ICA-2013), IISc, Bangalore, December 16-20^th, 2013.

26. Dinesh V. P., Suriyaraj S. P., Selvakumar R., Biji P, Enhanced Antibacterial Activity of Hybrid ZnO@Ag Heterojunction Core-Shell Nanorods against Escherichia coli, Staphylococcus aureus and Pseudomonas spp. International Union of Materials Research Societies – International Conference in Asia – 2013 (IUMRS-ICA-2013), IISc, Bangalore, December 16-20^th, 2013.

27. D. Jayaseelan, P. Biji, Finite Element Analysis of Magnetic Field Assisted Electrospinning (MFAES)Systems for Alignment of Magnetic Nanofibers, 25^th Annual General Meeting of Materials Research Society of India (MRSI-AGM-2014), IISc, Bangalore, 12-14^th February, 2014.

28. D. Jayaseelan, P. Biji, Role of Magnetic Field in Electrospinning Systems for Alignment of Magnetic Nanofibers: Finite Element Analysis (FEA) Approach, ISSS International Conference on Smart Materials, Structures and Systems, IISc, Bangalore, 8-11^th July, 2014.

29. A. Sukhananazerin, P. Biji, Synthesis and Characterization of Highly Water Soluble MWCNT/PABS Composites for NH₃ Gas Sensors, ISSS International Conference on Smart Materials, Structures and Systems, IISc, Bangalore, 8-11^th July, 2014.

30. K. K. Karthikeyan, P. Radhakrishnan and P. Biji, Morphological Evaluation of Template-Assisted, Electrospun Porous Polyacrylonitrile Nanofibers, ISSS International Conference on Smart Materials, Structures and Systems, IISc, Bangalore, 8-11^th July, 2014.

31. Keerthi G. Nair and P. Biji, Aligned Silver Nanowire Thin Films using Langmuir Blodgett Technique for Solar Cell Applications, International Conference on Sustainable Energy Technologies, PSG College of Technology, Coimbatore, 11-13^th December, 2014.

32. P. Biji, A. Sukhananazerin, D. Jayaseelan, M. Vijay, P. Prabhahari and T. Lazar Mathew, Development of Functionalized Multi-walled Carbon Nanotubes based NH₃ Gas Sensors for Breath Analyzer Applications, International Conference on MEMS and Sensors (ICMEMSS 2014), IIT Madras, 18-20^th December, 2014 (Best paper award-Oral).

33. P. Biji and V. P. Dinesh, Metal Oxide based Core-Shell Nanostructures as Excellent Gas Sensor Elements for Trace Level NO₂ Detection, Regional Conference of Young Scientists on Nanoscience & Nanomaterials, TWAS Regional Office for Central & South Asia (TWAS-ROCASA), JNCSR, Bangalore, 18-20^th February, 2015.

34. I. Nithya, V. P. Dinesh and P. Biji, National Conference on Physics of Bulk and Nanomaterials & Devices ((P-BAND - 2015), Bharathidasan Institute of Technology (BIT-Campus), Anna University, Trichi, 19-20^th March, 2015 (Best Poster Award).

35. V. P. Dinesh and P. Biji, Highly Sensitive, Graphene Oxide Supported Zinc Stannate (Zn₂SnO₄) Nanocubes and their Room Temperature NO₂ Gas Sensor Properties, IEEE Sensors 2015, Busan, South Korea, November 1-4^th, 2015.

36. A. Sukhananazerin, D. Jayaseelan, M. Vijay, P. Prabhahari, K. K. Venkataraman, T. Lazar Mathew, P. Biji, Functionalized multiwalled carbon nanotubes based portable NH₃ gas sensors for clinical breath analyzer applications, International Conference on Advances in Micro/Nanotechnologies for Biological Applications (ICAMB-2015), August 7-8^th, 2015.

37. V. P. Dinesh, S. Gokulnath and P. Biji, Detection of Paracetamol Using Zn₂SnO₄@rGO Nanocomposite Based Electrochemical Sensor, International Conference on Advances in Micro/Nanotechnologies for Biological Applications (ICAMB-2015), August 7-8^th, 2015.

38. A. Sukhananazerin, M. Ambika, P. Biji, Fabrication of NH₃ Gas Sensors Based on Highly monodispersed PANI and Au@PANI Nanospheres for Clinical Breath Analyzer Applications, International Conference on Advances in Micro/Nanotechnologies for Biological Applications (ICAMB-2015), August 7-8^th, 2015.

39. D. Jayaseelan, P. Biji , Effect of Temperature on Adsorption Kinetics and Electronic Transport of CuO Nanoparticles During H₂S Gas Sensing, International Conference on Advances in Micro/Nanotechnologies for Biological Applications (ICAMB-2015), August 7-8^th, 2015.

40. S. Joseph Antony, Adeola Olugbenga, Zuhair Jahanger, N. Ozerkan, K.N. Sheeba, Judes Sujatha and P. Biji, Micro-mechanical behaviour of Geo-materials: Advanced Multi-scale Experimental Characterizations and Modelling, 12^th UK Travelling Workshop – GeoMechanics: from Micro to Macro (GM3-2015), 17-18^th December, Nottingham, UK, 2015.

41. R. Vishnuraj, Keerthi G Nair and P. Biji, Charge Transport Characteristics and Gas Sensing Properties of n-p Type Ultra-long, Core-Shell ZnO@Bi₂O₃ Heterojunction Nanorods 4^th International Conference on Nanoscience and Nanotechnology (ICONN-2017), SRM University, Chennai, August 9-11, 2017.

42. Keerthi G.Nair, R.Vishnuraj and P.Biji, End-to-End Alignment and Electrical Properties of Core Shell, ZnO@Au Heterojunction Nanorods Reinforced Electrospun polyvinyl pyrrolidone Nanofibers for Gas Sensing Applications, 4^th International Conference on Nanoscience and Nanotechnology (ICONN-2017), SRM University, Chennai, August 9-11, 2017.