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Dr. B. T. S. Ramanujam

Assistant Professor, Department of Physics, School of Physical Sciences, Coimbatore

Qualification: M.Tech, MSc, Ph.D
bts_ramanujam@cb.amrita.edu
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Research Interest: Structure-Property Correlation in Conducting Polymer Nanocomposites, Polymer Blends, Conducting polymer based energy storage and energy harvesting materials, Nanogenerators, Bio-degradable polymers, Synthesis of carbon nanostructures and metal oxides

Bio Publications Academic Qualification Professional Appointments Research Projects Research Guidance Awards and Achievements Invited Presentations Membership in Professional Bodies Reviewer for the following journals Teaching
Bio

Dr. B. T. S. Ramanujam currently serves as Assistant Professor (SL) at the Department of Physics, Amrita School of Physical Sciences, Coimbatore.

Publications

Journal Article

Year : 2022

Polyvinylidene fluoride‐poly (vinyl acetate)‐natural graphite blend nanocomposites: Investigations of electroactive phase formation, electrical, thermal, and wetting properties

Cite this Research Publication : Haridas Menon, N, Sabu, A, B. T. S., R. Polyvinylidene fluoride-poly(vinyl acetate)-natural graphite blend nanocomposites: Investigations of electroactive phase formation, electrical, thermal, and wetting properties. Polym Adv Technol. 2022; 33( 12): 4023- 4040. doi:10.1002/pat.5833

Publisher : John Wiley & Sons, Ltd.

Year : 2022

Nanoclay-based Polymer Nanocomposites for Electromagnetic Interference Shielding

Cite this Research Publication : MR Nigil, BTS Ramanujam, R Thiruvengadathan, "Nanoclay-based Polymer Nanocomposites for Electromagnetic Interference Shielding", Adv. Appl. Micro Nano Clay II Synth. Polym. Compos Volume 129 Pages 53-78, 2022

Year : 2022

Polyvinylidene fluoride‐natural graphite flexible composite films: Formation of graphite nanosheets, electroactive phase, analysis of electrical and thermal properties

Cite this Research Publication : J Ayyappan, Niranjan Haridas Menon, Aleena Sabu, BTS Ramanujam, "Polyvinylidene fluoride‐natural graphite flexible composite films: Formation of graphite nanosheets, electroactive phase, analysis of electrical and thermal properties", Polymers for Advanced Technologies Volume 33 Issue 12 Pages 3997-4011, 2022

Publisher : John Wiley & Sons, Ltd.

Year : 2021

Investigations of structure development, electrical and thermal properties of polyvinylidene fluoride-expanded graphite nanocomposites

Cite this Research Publication : Ramanujam, B.T.S., Gopalakrishnan, C. Investigations of structure development, electrical and thermal properties of polyvinylidene fluoride-expanded graphite nanocomposites. Bull Mater Sci 44, 66 (2021). https://doi.org/10.1007/s12034-021-02354-0

Publisher : Indian Academy of Sciences

Year : 2021

Effect of casting solvent on the structure development, electrical, thermal behavior of polyvinylidene fluoride (PVDF)–carbon nanofiber (CNF) conducting binary and hybrid nanocomposites

Cite this Research Publication : Ramanujam, B.T.S., Adhyapak, P.V., Radhakrishnan, S. et al. Effect of casting solvent on the structure development, electrical, thermal behavior of polyvinylidene fluoride (PVDF)–carbon nanofiber (CNF) conducting binary and hybrid nanocomposites. Polym. Bull. 78, 1735–1751 (2021). https://doi.org/10.1007/s00289-020-03176-6

Publisher : Springer Berlin Heidelberg

Year : 2020

Polyvinylidene fluoride (PVDF)-poly (methyl methacrylate)(PMMA)-expanded graphite (ExGr) conducting polymer blends: Analysis of electrical and thermal behavior

Cite this Research Publication : M Sachin, Reshma Haridass, BTS Ramanujam, "Polyvinylidene fluoride (PVDF)-poly (methyl methacrylate)(PMMA)-expanded graphite (ExGr) conducting polymer blends: Analysis of electrical and thermal behavior", Materials Today: Proceedings Volume 28 Pages 103-107, 2020

Publisher : Materials Today: Proceedings

Year : 2018

Effect of oxidizing agents on the expansion characteristics of natural graphite

Cite this Research Publication : Abhishek Trivedi, Namita Pisharath, B.T.S. Ramanujam,
Effect of Oxidizing Agents on the Expansion Characteristics of Natural Graphite,
Materials Today: Proceedings,
Volume 5, Issue 8, Part 3,
2018,
Pages 16695-16702,
ISSN 2214-7853,
https://doi.org/10.1016/j.matpr.2018.06.033.

Publisher : Elsevier

Year : 2017

Analysis of electrical and thermal conductivities of polyethersulfone-graphite based hybrid nanocomposites

Cite this Research Publication : Ramanujam, B.T.S., Radhakrishnan, S. & Deshpande, S.D. Analysis of electrical and thermal conductivities of polyethersulfone-graphite based hybrid nanocomposites. Macromol. Res. 25, 311–316 (2017). https://doi.org/10.1007/s13233-017-5045-5

Publisher : The Polymer Society of Korea

Year : 2017

Polyphenylene sulfide-expanded graphite nanocomposites: processing route dependent electrical percolation

Cite this Research Publication : Ramanujam B, Radhakrishnan S, Deshpande S. Polyphenylene sulfide- expanded graphite nanocomposites: Processing route dependent electrical percolation. Journal of Thermoplastic Composite Materials. 2017;30(12):1603-1614. doi:10.1177/0892705716646420

Publisher : SAGE Publications

Year : 2017

Polypropylene-based conducting nanocomposites: effect of aspect ratio of second conducting filler on the electrical percolation

Cite this Research Publication : Ramanujam B, Radhakrishnan S, Deshpande S. Polypropylene-based conducting nanocomposites: Effect of aspect ratio of second conducting filler on the electrical percolation. Journal of Thermoplastic Composite Materials. 2017;30(6):840-854. doi:10.1177/0892705715614063

Publisher : SAGE Publications

Year : 2015

Solution-blended polyethersulfone–graphite hybrid composites: formation of nanographite and electrical characterization

Cite this Research Publication : Ramanujam B, Radhakrishnan S. Solution-blended polyethersulfone–graphite hybrid composites: Formation of nanographite and electrical characterization. Journal of Thermoplastic Composite Materials. 2015;28(6):835-848. doi:10.1177/0892705713518784

Publisher : SAGE Publications

Year : 2010

Polyphenylene sulfide-graphite hybrid composites: Charge transport and impedance characteristics

Cite this Research Publication : Ramanujam BTS, "Polyphenylene sulfide-graphite hybrid composites: Charge transport and impedance characteristics", 2010

Publisher : Central Institute of Plastics Engineering & Technology

Year : 2010

Polyphenylene sulfide-graphite hybrid composites: Charge transport and impedance characteristics

Cite this Research Publication : Ramanujam, B.T.S., Radhakrishnan, S. Polyphenylene sulfide-graphite hybrid composites: Charge transport and impedance characteristics. Int J Plast Technol 14 (Suppl 1), 37–44 (2010). https://doi.org/10.1007/s12588-010-0008-0

Publisher : Springer-Verlag

Year : 2010

Polyethersulfone-expanded graphite nanocomposites: charge transport and impedance characteristics

Cite this Research Publication : BTS Ramanujam, Rajashree Y Mahale, S Radhakrishnan, "Polyethersulfone-expanded graphite nanocomposites: charge transport and impedance characteristics", Composites Science and Technology Volume 70 Issue 14 Pages 2111-2116, 2010

Publisher : Elsevier

Year : 2009

Electrical properties of conducting polyphenylene sulfide graphite hybrid composites

Cite this Research Publication : Ramanujam BTS, Kanchan Nehete, "Electrical properties of conducting polyphenylene sulfide graphite hybrid composites", 2009

Publisher : Macmillan Publishers India

Year : 2007

High-temperature, polymer–graphite hybrid composites for bipolar plates: effect of processing conditions on electrical properties

Cite this Research Publication : S Radhakrishnan, BTS Ramanujam, A Adhikari, S Sivaram, "High-temperature, polymer–graphite hybrid composites for bipolar plates: effect of processing conditions on electrical properties", Journal of Power Sources Volume 163 Issue 2 Pages 702-707

Publisher : Elsevier

Year : 2001

WRONG SIZE EFFECT IN NaCl-LiCI MIXED CRYSTALS

Cite this Research Publication : BTS Ramanujam, K Shahi, "WRONG SIZE EFFECT IN NaCl-LiCI MIXED CRYSTALS", Ion Conducting Materials: Theory and Applications Pages 9, 2001

Publisher : Alpha Science Int'l Ltd.

Year : 1997

A fresh study of potential energy functions

Cite this Research Publication : S Durai, BTS Ramanujam, "A fresh study of potential energy functions", ACTA CIENCIA INDICA PHYSICS Volume 23 Pages 225-226, 1997

Publisher : PRAGATI PRAKASHAN MEERUT

Book Chapter

Year : 2021

Synthesis and Characterization of Carbon Nanostructures

Cite this Research Publication : Rajagopalan Thiruvengadathan, BTS Ramanujam, "Synthesis and Characterization of Carbon Nanostructures", Carbon Nanostructures: Fundamentals to Applications Pages 2-1-2-30, 2021

Publisher : AIP Publishing LLC

Year : 2021

Carbon Nanostructures and Their Desirable Functionalization for Energy Harvesting

Cite this Research Publication : BTS Ramanujam, Aleena Sabu, Reshma Haridass, Rajagopalan Thiruvengadathan, "Carbon Nanostructures and Their Desirable Functionalization for Energy Harvesting", 2021

Year : 2021

Conducting polymer nanocomposites with carbon nanostructures as advanced emi shielding materials: recent advancements and challenges

Cite this Research Publication : B. T. S. Ramanujam, Aleena Sabu, M. Pranesh, Rajagopalan Thiruvengadathan, "Conducting Polymer Nanocomposites with Carbon Nanostructures as Advanced EMI Shielding Materials: Recent Advancements and Challenges", Carbon Nanostructures: Fundamentals to Applications, Rajagopalan Thiruvengadathan, Somnath C. Roy, Poonam Sundriyal, Shantanu Bhattacharya

Book

Year : 2023

Electroactive Polymers and Their Carbon Nanocomposites for Energy Harvesting

Cite this Research Publication : Ramanujam, B.T.S., Haridass, Reshma, Muralidharan, Pranesh, Nanjundan, Ashok Kumar, Dubal, Deepak, and Annamalai, Pratheep K. (2023). Electroactive polymers and their carbon nanocomposites for energy harvesting. Nanogenerators: basic concepts, design strategies, and applications. Edited by Inamuddin, Mohd Imran Ahamed, Rajender Boddula, and Tariq Altalhi. Boca Raton, FL, United States: CRC Press.361-396

Publisher : CRC Press

Year : 2021

Nanocellulose-based carbon as electrode materials for sodium-ion batteries

Cite this Research Publication : B.T.S. Ramanujam, Ashok Kumar Nanjundan, Pratheep K. Annamalai, "Chapter 12 - Nanocellulose-based carbon as electrode materials for sodium-ion batteries", Editor(s): Sabu Thomas, Yasir Beeran Pottathara, In Micro and Nano Technologies, Nanocellulose Based Composites for Electronics, Elsevier, 2021, Pages 295-312, ISBN 9780128223505,
https://doi.org/10.1016/B978-0-12-822350-5.00012-6.
(https://www.sciencedirect.com/science/article/pii/B9780128223505000126)

Publisher : Elsevier

Year : 2017

Electrical Properties of Conducting Polymer‐MWCNT Binary and Hybrid Nanocomposites

Cite this Research Publication : BTS Ramanujam, S Radhakrishnan, "Electrical Properties of Conducting Polymer‐MWCNT Binary and Hybrid Nanocomposites", Trends and Applications in Advanced Polymeric Materials Pages 127-143, 2017

Publisher : John Wiley & Sons, Inc.

Year : 2017

Conducting polymer–graphite binary and hybrid composites: Structure, properties, and applications

Cite this Research Publication : BTS Ramanujam, Pratheep K Annamalai, "Conducting polymer–graphite binary and hybrid composites: Structure, properties, and applications", Hybrid Polymer Composite Materials Pages 1-34, 2017

Publisher : Hybrid Polymer Composite Materials

Year : 2017

Conducting polymer–graphite binary and hybrid composites: Structure, properties, and applications

Cite this Research Publication : BTS Ramanujam, Pratheep K Annamalai, "Conducting polymer–graphite binary and hybrid composites: Structure, properties, and applications", Hybrid Polymer Composite Materials Pages 1-34, 2017

Publisher : Woodhead Publishing

Academic Qualification
Degree University
Ph.D Physics (Conducting Polymer Composites) National Chemical Laboratory/Pune University, Pune, 2006-2011
M.Tech Materials Science Dissertation: Wrong Size Effect in NaCl-LiCl mixed crystals (Solid Electrolytes) Indian Institute of Technology, Kanpur, Uttar Pradesh, 1998 – 2000
M.Sc Physics Dissertation: A Fresh study of Potential Energy Functions for Diatomic Molecules A.M. Jain College/Madras University, Chennai, Tamil Nadu, 1995-1997
B.Sc Physics D.G. Vaishnav College, Chennai, Tamil Nadu, 1992-1995
Professional Appointments
Position Held Institute/University
Assistant Professor (SG) Department of Sciences, Amrita Vishwa Vidyapeetham, Coimbatore, Tamil Nadu. 01st July 2021 to till date
Assistant Professor (Sr. Gr) Department of Sciences, Amrita Vishwa Vidyapeetham, Coimbatore, Tamil Nadu. 19th June 2017 – 31st June 2021
Assistant Professor School of Engineering and Technology, Navrachana University, Vadodara, Gujarat 29th June 2012- 26th May 2017.
Post Doctoral Researcher Behr Process Paints (India) Pvt. Ltd., Pune, Maharashtra. (US based MNC-A MASCO Company) 01st February 2011- 31st January 2012
Senior Chemist Behr Process Paints (India) Pvt. Ltd., Pune, India (US based MNC- A MASCO Company) 01st February 2012 – 07th June 2012
Technical Officer Central Institute of Plastics Engineering and Technology (CIPET), Bhubaneswar, Orissa. 24th May 2010 – 16th January 2011
Junior and Senior Research Fellow Polymer Science and Engineering Division, National Chemical Laboratory, Pune December 2004 – May 2006
Guest Worker Polymer Science and Engineering Division, National Chemical Laboratory, Pune. January 2004 – October 2004
Guest Scientist Department of Physics, Freiburg University, Freiburg, Germany June 2003- October 2003
Senior Research Fellow (CSIR) Department of Physics, Indian Institute of Technology, Madras September 2000 – February 2002
Research

Research Interests

  1. Structure-property correlation in conducting polymer composites
  2. Electroactive polymer based nanogenerators
  3. Inherently conducting polymer hybrid nanocomposites and polymer based solid electrolytes for energy storage applications
  4. Conducting polymer nanocomposites for EMI shielding applications
  5. Biodegradable polymers, Carbon nanostructures and synthesis of metal oxides for diversified applications

Research activities of my group predominantly lies in understanding structure-property correlation in conducting polymer composites so that they can be used for diversified applications such as EMI shielding in microwave frequency range, fuel cell bipolar plates, sensors and actuators etc. We investigate the electrical, and thermal properties of different semi-crystalline polymers incorporated with carbon nanostructures such as carbon nanotubes, carbon nanofiber etc. for EMI shielding applications.

Apart from insulating polymer-based nanocomposites, our group further focuses attention on the synthesis of inherently conducting polymers such as polyaniline and hybrid nanocomposites prepared with PANI nanostructures for energy storage applications.

Projects

Sanctioned Project

  • Development of electroactive polymer-based hybrid nanocomposite nanogenerator for biomedical application- Sanctioned under UGC-DAE Collaborative Research Scheme. (June 2022-ongoing) (1.35 Lakhs)
Research Guidance

Current PhD Students: 2+2 (Direct PhD) +1 (co-guide)
Master Thesis: 8 Completed + 4 on going
Bachelor’s Thesis: 01 completed +01 ongoing

  1. Aleena Sabu : Aleena Sabu after completion of M.Sc [Physics] from Baselius College, Kottayam Joined our group in August 2020 for pursuing Ph.D. and working on synthesis and characterization of semicrystalline polymer-based hybrid nanocomposites which can be used as microwave absorbing material. She has been awarded Junior Research Fellowship from University Grand Commission under the Scheme Savitribai Jyotirao Phule Single Girl Child Fellowship (SJSGC).
  2. Nikhitha Augustin : Nikhitha Augustin, Ph.D. student Joined conducting polymers group in August 2022. Her primary research interest lies in understanding structure-property correlations in polymer blend nanocomposites for energy harvesting applications. She is currently awarded research assistantship by Amrita Vishwa Vidyapeetham. She was a recipient of Aspire scholarship (from Govt. of Kerala) for carrying out M.Sc. project.
  3. Lavaneethan T : Mr. Lavaneethan has registered for direct Ph.D. Currently he is pursuing final semester Int.M.Sc.[Physics] at School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore. His primary research interest lies in the synthesis and energy storage applications of inherently conducting polymer-based hybrid nanocomposites. Also, he is working in the area of conducting polymer based anticorrosion coatings. He has been shortlisted for the award of Amrita University research fellowship to pursue Ph.D.
  4. Kanya KS : Ms. Kanya KS has registered for direct Ph.D. Currently she is in final semester Int.M.Sc.[Physics]. Her research interest chiefly lies in the area of solid polymer electrolytes/gel polymer electrolytes for battery applications. She has been shortlisted for the award of University Research Fellowship to carry out Ph.D. in the above-mentioned area.
  5. Daphne Mary John (Co-Guide) : Ms. Daphne is currently working on semicrystalline polymer- based nanocomposite for energy harvesting applications. Part of the work- related to her Ph.D. will be carried out with our group. She has been associated with our group since August 2021. Her work is in collaboration with Dr. K.M. Sreekanth group.
  6. Keerthana Balakrishnan : Ms. Keerthana Balakrishnan is currently a final year student of Int.M.Sc.[Physics]. Her major project work deals with structure-property correlation in Biodegradable polymer-based nanocomposites.
  7. Vaishak G : Mr. Vaishak is a final year Int.M.Sc.[Physics] student. His major project work is related to structure-property correlation in semi-crystalline polymer blend nanocomposites.

Past Group Members

Name of the Student Degree Year of Passing Present position
1. Reshma Haridass Int. Msc.[Physics] student 2020 Senior Chemist, Behr Process Paints India Pvt. Ltd., Pune, India [US based company]
2. Niranjan Haridas Menon Int.M.Sc.[Physics] 2021 Graduate student in Materials Engineering Newark, New Jersey, United States.
3. J. Ayyappan Int.M.Sc.[Physics] 2021 Software Engineer, Infosys
4. Athul AK Int.M.Sc.[Physics] 2022 JRF, IIST-Trivandrum
5. Shivankari PR Int.M.Sc.[Physics] 2022 In Pharmaceutical company, Chennai
Awards and Achievements
  1. Visiting Scholar in the Department of General Practice and Materials Science, College of Dentistry, Ohio State University, USA and worked on the Synthesis and characterization of block co-polymers for dental applications between 15th May 2015 to 01st August 2015 under Scott Schricker.
  2. INSA visiting scientist fellow from 15th June 2015 to 15th August 2015 to work under Dr. Parag V Adhyapak in Centre for Materials for Electronics Technology, Pune (C-MET, Pune).
  3. Stood University Third in Sc.[Physics] Degree examination.
  4. Qualified GATE – all India level examination (Graduate Aptitude Test in Engineering) with 97.69 percentile in
  5. Senior Research Fellowship from Council of Scientific and Industrial Research (CSIR),
  6. Second prize for oral presentation in the international conference APM (Advancements in Polymeric Materials)-2010 held at CIPET- Bhubaneswar, India in Feb’2010.
  7. Dean choice award for teaching in the School of Engineering and Technology, Navrachana University, Vadodara for the year 2014-2015.
Invited Presentations
  1. “Current trends in architectural coatings technology” at KDJ Center for Research in Materials & Technology (KCRMT), Pune, India in December
  2. Invited as a resource person to deliver a talk on nanomaterials for the UGC sponsored National seminar held at Sacred Heart College, Chalakudy, Kerala, India in November
  3. Invited Presentation on the topic “Role of Electronic Conducting Materials in ion conducting Energy Storage Devices” in 12th National Conference on Solid State Ionics held in the Department of Physics, Birla Institute of Technology and Science (BITS), Pilani, Rajasthan, India in December 2017.
Membership in Professional Bodies
  • Life Member-Indian Plastics Institute
Reviewer for the following journals
  1. Composites Part B: Engineering
  2. Materials Letters
  3. Journal of Thermoplastic Composite Material
  4. Polymer Bulletin
Teaching

Amrita

  1. Physics for first semester Tech. students
  2. Mechanics for Integrated Sc. (Chemistry) students
  3. Electricity and Magnetism for Integrated Sc.(Mathematics) students
  4. Physics of Semiconductor Devices for Integrated Sc (Physics) students and B.Tech.[AE}
  5. Basics of Electricity and Magnetism for M.Sc.[Physics] students
  6. Advanced Electrodynamics for M.Sc [Physics] students
  7. Concepts of Nanophysics and Nanotechnology for Tech.[Aerospace Engineering] students
  8. Mechanics and Properties of Matter for M.Sc [Physics] students
  9. Electrodynamics for fifth semester M.Sc [Physics] students
  10. Mastery Over Mind- Exclusively Offered in Amrita Vishwa Vidyapeetham
  11. Physics of Electronic Materials for Tech. students

Lab Courses: First Semester B.Tech. Lab, Electricity and magnetism Lab for second year Integrated M.Sc. (Physics) students, Mechanics and Properties of Matter Lab for First year Int.M.Sc [Physics] students, Spectroscopy Lab for Fourth Year Integrated M.Sc (Physics) students

NUV

  1. Atomic and Nuclear Physics
  2. Mechanics
  3. Paint Technology
  4. Introduction to Polymer Science and Engineering
  5. Modern Physics etc

CIPET

  1. Plastic Testing Methods
  2. Carbon nanotubes and related structures
  3. Polymeric Materials
  4. Materials Science
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