SANATANA DHARMA COLLEGE
Dr.Sreekanth J.Varma (Assistant Professor)
M.Sc, Ph.D

Dr.SreekanthJ.Varma is an Assistant Professor in the Department of Physics of the Sanatana Dharma College. . His research areas include Organic Electronics (Polymer/Organic Light Emitting Diodes, photovoltaics and FETs), Nanomaterials and Conducting polymers. He was awarded the prestigious Raman PDF (NanoScience Technology Centre, University of Central Florida) during 2016 and Dr.D.S.Kothari postdoctoral fellowship during 2013. He has research collaborations with many institutions of national status including the Department of Physics, CUSAT, NIT Calicut and IIT Kanpur. He has more than 15 international peer-reviewed journal publications. He is a reviewer for a number of reputed international journals. He is an approved research guide in Physics under the University of Kerala.
Education
PhD (Physics) (2008-2012):
PhD thesis entitled “Investigations on polyaniline based systems for technologically important applications and some novel polymers as prospective candidates for fabricating polymer light emitting diodes”, Department of Physics, Cochin University of Science and Technology, Kochi 682022, India.

M.Sc. Physics (2002-2004):
Maharaja’s College, Ernakulam, Kerala - Mahatma Gandhi University, Kerala, India
B.Sc. Physics (1999-2002):
N.S.S College, Cherthala, Kerala, India - Kerala University, Kerala, India

Teaching Experience
• September 2013 – Teaching for the PG and UG courses at S.D.College, Alappuzha
• May – August 2013: Took lecture classes onNanophotonics for MS Nanotechnology course at the Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam

Areas of Interest

• Organic Electronics (photovoltaics and LEDs)
• High power nanogenerators for energy harvestingapplications
• Conducting Polymers &their applications
• Nanomaterials

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Invited Lectures

• “Organic Electronics: In the Perspective of Sensors and Optoelectronic Devices”, in Recent Trends in MEMS Sensors and Devices on the 11th of October 2013 as part of Continuing Education Programme of DRDO at Naval Physical and Oceanographic Laboratory (NPOL)
• “Spin coating technology”, in a workshop on Virtual Instrumentation and Advanced Experimental techniques on the 12th of November 2013 at Government College, Nattakam, Kottayam
• “Graphene as a Prospective Material for Organic Photovoltaic Applications”, in the National Seminar on Recent Trends in Supramolecular Assembly and Nanomaterialsduring the 11thand 12th of December 2013 at MSM College, Kayamkulam
• “Polymer Research: The evolution from passive insulation to active light emission”, in the National seminar on Current Trends in Material Science during the 13th and 14th of August 2014 at Aquinas College, Edakochi

Publications

Book(s)/Chapter(s)

• S.Jayalekshmi,SreekanthJ.Varma, ‘The Versatile Roles of Graphene in Organic Photovoltaic Device Technology’, in Applied Spectroscopy and the Science of Nanomaterials, Progress in Optical Science and Photonics Volume 2, Springer Singapore, 2015, pp. 223-251

International peer-reviewed (Published/In-press)

1. RanjiniR.Mohan*, SreekanthJ.Varma* and JayalekshmiSankaran, “Impressive electromagnetic shielding effects exhibited by highly ordered, micrometer thick polyaniline films”, Applied Physics Letters,108, (2016) 154101 (*Equal contribution)

2. Anand P.B, Shijeesh M.R, Sreekanth J. Varma, S.Jayalekshmi, “Exceptionally crystalline and conducting acid doped Polyaniline (PANI) films by level surface assisted solution casting approach”, Applied Physics Letters, 108, (2016) 161901.

3. Vidya G*, SreekanthJ.Varma*, M.V.Mahesh Kumar, S.Prathapan, S.Jayalekshmi and Rani Joseph, “Semiconducting Thienylene - Biphenylenevinylene Hybrid Polymers: Synthesis, Characterization and Application Prospects in Polymer LEDs”, Dyes and Pigments, 126 (2016) 303-312(*Equal contribution)

4. RanjiniR.Mohan, SreekanthJ.Varma, Muhammad Faisal and Jayalekshmi S, “Polyaniline/graphene hybrid film as an effective broadband electromagnetic shield”, RSC Advances, 5 (2015)5917-5923

5. M. Sajimol Augustine, P.P Jeeju, S.J Varma, P.A Francis Xavier, S. Jayalekshmi, "Enhanced photoluminescence in transparent thin films of polyaniline-zinc oxide nanocomposite prepared from oleic acid modified zinc oxide nanoparticles", Thin solid Films, 562 (2014) 84-89

6. SreekanthJ.Varma, RanjiniR.Mohan, Vidya G, S.Jayalekshmi, S.Prathapan, “Effect of Solvents on the Photoluminescence Emission of a Few Novel, Light Emitting, Segmented Block Copolymers and Hybrid Polymers”, AIP Conference Proceedings, 1576 (2014) 171-175

7. S.J.Varma, Jerin George, Jeeju.P.P, S.Jayalekshmi, “Quantum confinement effects in highly conducting, ultrathin Polyaniline films pursued through spectroscopic investigations”, Journal of Luminescence, 132 (2012) 801-805

8. S.J.Varma, Francis Xavier P.A, Soney Varghese and S.Jayalekshmi, “Synthesis and studies on exceptionally crystalline polyaniline thin films”, Polymer International, 61, (2012) 743–748

9. S.J.Varma, S.Jayalekshmi, “On the prospects of Polyaniline and Polyaniline/MWNT Composites for possible pressure sensing applications”, Journal of Applied Polymer Science, 117 (2010) 138–142

10. Pullarkat P Jeeju, Augustine M Sajimol, Vallath G Sreevalsa, Sreekanth J Varmaand S.Jayalekshmi, “Size-dependent optical properties of transparent, spin-coated polystyrene/ZnOnanocomposite films”, Polymer International, 60 (2011) 1263–1268

11. P.P.Jeeju, S. J.Varma, P.A.Francis Xavier, A.M.Sajimol, S.Jayalekshmi, “Novel Polypyrrole films with excellent crystallinity and good thermal stability”, Materials Chemistry and Physics, 134, (2012) 803-808

12. M.Sajimol Augustine, S.J. Varma, P.A. Francis Xavier and S. Jayalekshmi, “Enhanced photoluminescence in oleic acid modified polyaniline”, Transactions of the Indian Institute of Metals, 64 (2011) 209-212

13. M.Amrithesh, K.P.Chandni, S.Jayalekshmi, FebinKurian, S.J.Varma, On the interesting optical transitions observed in polyaniline films in the conducting and insulating states, Optoelectronics and Advanced Materials – Rapid Communications, Vol.3, No. 2, February 2009, 149 – 154

14. SreekanthJ.Varma, S.Jayalekshmi, “Carbon Nanotube - Polymer Nanocomposites for Possible Pressure Sensor Applications” Proc. of SPIE Vol. 7037, 703716, (2008)

International/National Conferences

1. Praveen P, Arjun B andSreekanthJ.Varma, “Conducting polymer composite based materials for pressure sensing applications”, National Seminar on Material Science with Special Emphasis on Crystallography, 9-11 September 2015, Govt. College, Nattakam

2. RanjiniR.Mohan and SreekanthJ.Varma, “Non-linear optical properties of highly conducting polyaniline films prepared via self-stabilized dispersion polymerization”, Proc. of the National Seminar on Nanochemistry – Techniques, Advancement and Applications, 16th October 2015, Alappuzha

3. Muhammad Faisal and Sreekanth J. Varma, “Fly Ash Incorporated Polyaniline as a High Performance Shield against Electromagnetic Pollution”, Proc. of IC-EEE2015, 4-7th February 2015, Kochi

4. Muhammad Faisal and Sreekanth J. Varma, “X-band electromagnetic interference shielding of polyaniline/barium ferrite composites”, Proc. of the 27th Kerala Science Congress, 27-29 Jan 2015, Alappuzha

5. SreekanthJ.Varma, RanjiniR.Mohan, Vidya G, S.Jayalekshmi, S.Prathapan, “Effect of Solvents on the Photoluminescence Emission of a Few Novel, Light Emitting, Segmented Block Copolymers and Hybrid Polymers”, The 2nd International conference on Optoelectronic Materials and Thin films for Advanced Technology (OMTAT 2013), 3rd-5th January, 2013, Kochi, India

6. S.J.Varma, Francis Xavier and S. Jayalekshmi, “An investigation on the high temperature response of highly conducting polyaniline films” Proc. International conference on Advances in Polymer Technology, Feb. 26-27, 2010, India, Page No. 119

7. S.J.Varma, et al., “A quest for quantum confinement in highly conducting polyaniline thin films through spectroscopic investigations”, Proc. International conference ICMST held during October 2010 at Thiruvananthapuram

8. S.J.Varma, S.Jayalekshmi, Proc. International Conference on “Material Science Research and Nanotechnology (ICMSRN 2008)”, 27-29th February 2008, Kodaikanal, Tamilnadu, India, 46, P 153

9. Sreekanth.J.Varma, Rani Joseph, Honey John, Mani.T.K; PP 17, Proc. National Conference “New Horizons in Theoretical & Experimental Physics (NHTEP 2007)”, October 8-10 (2007), Cochin, India

10. SreekanthJ.Varma, RanjiniR.Mohan, Manoj.M, “Crystallinity in highly conducting PANI films, synthesized by dispersion polymerization”, Proc.Current Trends in the Fields of Nano Science and Nanotechnology, 13th-14th December 2012, K.K.T.M Govt. College, Kodungallur, Kerala, India

11. Muhammad Faisal, Sreekanth J Varma, KC Sajjan, and Syed Khasim, “Polyaniline-Stannous Oxide Composites for EMI Shieldingand Humidity Sensing Applications”, Proc. of International Union of Materials Research Societies - International Conference in Asia-2013 (IUMRS-ICA-2013) December 16-20, 2013, IISC, Bangalore

12. Muhammad Faisal, Ranjini R. Mohan, Sreekanth J. Varma, KC Sajjan, and Syed Khasim, “Polyaniline-yttrium oxide composites for humidity sensing and microwave shielding/absorbing applications”, 26th Kerala Science Congress, 28-31 January 2014, Wayanad (Accepted)

13. Muhammad Faisal, Sreekanth J.Varma, KC Sajjan and Syed Khasim, “Polyaniline-Antimony Oxide Composites for EMI Shielding and Pressure Sensing Applications”, Proc. International Conference on Advanced Polymeric Materials (ICAPM 2013), P27, pp 191-192, 2013

14. K.C.Sajjan, Munammad Faisal, Sreekanth J. Varma, Syed Khasim, “EMW Absorbing Properties of Polyaniline-ChromiumOxide Composites”, Proc. International Conference on Advanced Polymeric Materials (ICAPM 2013), SIL 56, pp 112, 2013

15. Jubeesh M.K, Ranjini R. Mohan, SreekanthJ.Varma, “Nanostructured polyaniline as a prospective candidate for pressure sensing applications”, Proc.Current Trends in the Fields of Nano Science and Nanotechnology, 13th-14th December 2012, K.K.T.M Govt. College, Kodungallur, Kerala, India

16. P.B. Anand, Sreekanth J. Varma, S. Jayalekshmi, Structural and electrical characterization of exceptionally crystalline CSA, NSA doped polyaniline thin films, Proc. Fifth International Conference on “ Electroactive Polymers: Materials and Devices”, Nov. 4-9, 2012, Banaras Hindu University, Varanasi, India

17. Francis Xavier, Amrithesh.M, S.J.Varma, Jeeju P. P and S. Jayalekshmi, “Studies on Polyaniline – functionalised carbon nanotube composite films with exceptional high dc electrical conductivity, Proc. International symposium for research scholars on metallurgy, material science and engineering (ISRS 2010), December 20-22, 2010, ELPM-5, Page No. 199

18. Francis Xavier, S.J.Varma, and S. Jayalekshmi, “An investigation on the high temperature response of H3PO4 doped PANI and PANI-MWNT composites”, Proc. International conference on Advances in Polymer Technology, Feb. 26-27, 2010, India, Page No. 115

19. Francis Xavier P. A, Bobins Augustine, S. J. Varma, Jeeju P. P, Amrithesh.M and S. Jayalekshmi, Functionalization of Multiwalled Carbon Nanotubes as a route to synthesize highly conducting Polymer-Nanocomposites” was presented in the international conference ICMST held during October 2010 at Thiruvananthapuram, HPS05, pp 8.34

20. SajimolAugustine.M, S.J.Varma, Francis Xavier and S. Jayalekshmi, Enhanced photoluminescence behaviour of PANI/ZnOnanocomposite prepared from oleic acid capped ZnO nanoparticles” was presented in the international conference ICMST held during October 2010 at Thiruvananthapuram

21. Jeeju P. P, S J. Varma, Francis Xavier P.A, S.Jayalekshmi, “Polypyrrole films with excellent crystallinity and good thermal stability”, was presented in the international conference ICMST held during October 2010 at Thiruvananthapuram

22. SajimolAugustine.M, S.J.Varma, Francis Xavier and S. Jayalekshmi, “Enhanced photoluminescence in oleic acid modified Polyaniline”, Proc. International conference ‘ISRS 2010’, IITM, Chennai

23. Jeeju.P.P, Sreekanth.J.Varma, Amrithesh.M, S.Jayalekshmi, “Polypyrrolenanorods with appreciable crystallanity and good optical absorption characteristics”, Second International Conference on frontiers in Nanoscience& Nanotechnology: Cochin Nano- 2009, page 144

24. R.Mohan, SrikanthNaik, M. Rao, S.J.Varma, A. M Shanmugharaj, Soney Varghese, Preparation and Characterization of Ferroelectric Polymer-Ceramic Nanocomposites for Non-volatile Memory Applications, Proc. International conference on Advances in Polymer Technology, Feb. 26-27, 2010, India, Page No. 330

UGC Projects

Minor Project entitled “Development of highly crystalline conducting polymers and polymer nanocomposites for electromagnetic shielding applications” funded by University Grants Commission – Rs.5 lakhs

Honours and Awards

• Raman PDF – 2016
• Dr.D.S.Kothari Postdoctoral Fellowship – 2013

Others

• Convener, Research Assessment Committee, S.D.College, Alappuzha (2014-16)
• Member – DST FIST Project Implementation Group
• National Advisory Committee Member, International Conference on Energy Harvesting Storage and Conversion, CUSAT (2015)
• Mentor, ‘Walk-with-a-Scholar’ (Govt. of Kerala),S.D.College, Alappuzha (2014-16)
• Co-ordinator – One-day Seminar “Celebrating the Centenary of Bohr Atom Model” organised by APT, Kerala in collaboration with the Dept. of Physics, S.D.College

Professional Associations
• Reviewer for the international peer-reviewed journals like Applied Physics Letters, Journal of Materials Chemistry C, Polymer Chemistry, RSC Advances, Polymer International, Journal of Frontiers in Environmental Engineering (FIEE), International Journal of Chemistry and Material Science (IJCMS)and Iranian Polymer Journal
• SPIE student member during 2008-09
Other Academic Activities
• Helped 17 post-graduate (MSc. Physics) and 6 M.Phil. students in their research work towards Masters’ and M.Phil. degree theses during 2005-2013
• Supervised 7 PG (MSc. Physics) and 18 UG Students in their research and project work towards MSc and BSc degree theses since September 2013