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Dr. Reetesh Kumar GANGWAR

Associate Professor

Education & Experience:

Ph.D.: Department of Physics, IIT Roorkee (2008 – 2012) 
Associate Professor: IIT Tirupati (01/2024 – Present) 
Assistant Professor: IIT Tirupati (11/2018 – 12/2023)
Assistant Professor: VNIT Nagpur, (03/2018 – 11/2018)

Research Interests: 

Design and development of low temperature plasma systems
Optical diagnostics of plasmas and quantitative analysis of reactive species
Classical and quantum algorithm-based plasma simulation
Machine learning applications in plasma diagnostics and data analysis
Plasma-based systems for water and wastewater treatment, agriculture, and food processing
Quantum mechanical calculation of cross sections and plasma population kinetic modeling

Follow & Contact: 

AB2-313, Department of Physics,
IIT Tirupati, Tirupati, 517619, India. 
Ph: 0091-877-250-3457. 
Email: reetesh@iittp.ac.in 
Personal Webpage,  Google Scholar
LinkedIn, ResearchGate

Teaching

PH301P - Applied Optics and Material Physics Laboratory (Jul–Dec 2026)

PH105L - Introduction to Quantum Science and Technology (Jul–Dec 2026, Jul–Dec 2025, Jul–Dec 2024)

PH001L - Physics Preparatory Course (Jul–Dec 2023)

PH1103 / PH103P - Physics Laboratory (Jul–Dec 2025, Jan–Jun 2024, Jan–Jun 2023, Jul–Dec 2022, Summer 2023, Summer 2022, Jan–Jun 2021, Jan–Jun 2020, Jul–Dec 2019, Jan–Jun 2019)

PH1202 - Introduction to Electrodynamics and Quantum Mechanics (Jan–Jun 2020, Jan–Jun 2019)

PH1101 - Introduction to Classical Mechanics (Jul–Dec 2019)

PH511L - Quantum Mechanics-II (Jan–Jun 2026, Jan–Jun 2025)

PH691G - Project Phase-I (Every Jul–Dec semester (2021–Present))

PH692G - Project Phase-II (Every Jan–Jun semester (2022–Present))

PH605L - Basics and Applications of Plasma Physics (Jul–Dec 2026, Jul–Dec 2025, Jul–Dec 2024, Jan–Jun 2024, Jan–Jun 2023, Jan–Jun 2022, Jul–Dec 2021, Jul–Dec 2020, Jul–Dec 2019)

PH603P - Advanced Physics Lab (Jul–Dec 2024, Jul–Dec 2023)

PH508P - Physics Lab-I (Jul–Dec 2024, Jul–Dec 2023)

PH507L - Mathematical Physics-II (Jan–Jun 2024, Jan–Jun 2023, Jan–Jun 2022, Jan–Jun 2021)

PH702L - Foundations of Experimental Physics (Jan–Jun 2024, Jan–Jun 2023, Jan–Jun 2022)

Selected Publications

2026

V. Bende, P. S. N. S. R. Srikar, R. K. Gangwar, R. L. Bhardwaj, and R. Kar, “A semi-empirical approach to Boltzmann plot analysis for cold atmospheric pressure plasma: Comparison with collision-radiative modelling,” Vacuum 115, 263 (2026).

2026

R. Dey, A. Agrawal, R. K. Gangwar, et al., “Simulation study of neutral tungsten emissions for fusion applications,” Plasma and Fusion Research 21, 2403022 (2026).

2025

P. S. N. S. R. Srikar, I. Suresh, and R. K. Gangwar, “Machine learning-enabled prediction of optical emission spectra in scalable non-thermal Ar atmospheric pressure plasma multi-jet,” Journal of Physics D: Applied Physics 58, 415204 (2025). 

2025

T. P. Gandhi, M. P. Sai, S. M. Allabakshi, R. K. Gangwar, and S. M. Maliyekkal, “Transforming antibiotic treatment: Unleashing the nexus between UV photons and nonthermal atmospheric pressure air plasma in pharmaceutical wastewater,” Journal of Environmental Chemical Engineering 119, 119160 (2025).

2024

S. M.Maliyekkal, R. K. Gangwar, S. Allabakshi, P. Srikar, and A. Kumar, “Chemo-photo-plasma hybrid
advanced oxidation process for ultrafast removal of environmental pollution”, IDF submitted, 2024.

2022

S. M.Maliyekkal, S. Soujit, G. Vajitha, P. Srikar, andR. K. Gangwar, “Plasma-uv assisted bulk production
of graphenic material with tunable surface area and porosity”, Full patent submitted, 2022. 

Read more...

Students

Dr. Indhu Suresh (2020–2025)
Dr. P. S. N. S. R. Srikar (2019–2025)
Dr. S. M. Allabakshi (2019–2024)
Mr. T. Pushparaj Gandhi (2022–Present)
Mr. T. Satish Babu (2022–Present)
Mr. M. Guru Bhavan Narayana (2024–Present) 
Mr. Abhay Kumar (2024–Present)
Mr. Shriyash Vilas Patil (2024–Present)

Mr. Akash Uniyal
Ms. Anamika
Ms. Chebrolu Rajyalakshi
Mr. Debabrat Rout
Ms. Saroj Meena
Ms. Sajal Soan
Ms. Muskan
Mr. Amit Kumar Jangid
Mr. Rahul Samriya
Mr. Diwaskar Rai
Mr. Kartik Paul
Ms. Akhila K. C.
Ms. Shanila M. (Project)
Ms. Somya Pal (M.Tech.)
Mr. Rahul Kumar (M.Tech.)
Ms. Priyanshi Chauhan (Project)
Mr. Jerin Abraham George (M.S.)
Ms. Syed Arwa Balkhi (M.Tech.)
Ms. Palli Priyanka (M.Tech.)


Sponsored Research & Consultancy Projects

Year

2024 – 2027


2023 – 2025


2023-2028


2020 – 2021


2019 – 2022


2024 – 2025



2025 – present
Agency

DST-SERB (CRG)


DAE-BRNS


DST


DST-SERB-(Special COVID Call)

DST-SERB (CRG)


Consultancy
Ozone Research India Pvt. Ltd

Consultancy FaradayEarth India Pvt. Ltd

Title

Development of a novel nonthermal atmospheric pressure plasma reactor for the prevention of aflatoxin in food and agriculture products

Development of an atomic processes database using calculation & measurement in Tokamak & Lab plasma


Membrane Technologies for Desalination, Brine Management, and Water Recycling


Development of a Portable Optical Cavity Sterilization Unit


A novel scheme to cool the translational as well as internal degrees of freedom of any molecular ion beam


Development of atmospheric nonthermal plasma-based liquid fertilizer as a natural growth enhancer and biocidal agent


Optical Diagnostics of an Atmospheric - Pressure Industry Preparatory Plasma Reactor and Preliminary Feasibility Study for Implementing Data-Driven Machine Learning-Based Optical Diagnostics

Professional Activities

R. Gangwar, "Smart Diagnostics of Nonthermal Atmospheric Pressure Plasmas for Efficient Reactor Development", Invited Talk, 29–30 May 2025, IIT Mandi, May 2025.

R. Gangwar, "Implementation of machine learning optical diagnostics for efficient processing and scaling of plasma reactors for pilot-scale applications in agriculture and food processing sector", 2nd Global Forum and International Workshop on Industrial Plasma Processes and Diagnostics (IPPD 2025), 18–20 May 2025, IID Delhi, May 2025.

R. Gangwar, "Application of plasma diagnostics in developing efficient plasma reactors", The 1st Global Forum and International Workshop on Industrial Plasma Processes and Diagnostics (IPPD 2024), 09–10May 2024, IIT Delhi, May 2024.

R. Gangwar, "Study of Atomic and Molecular Processes in a Controlled Plasma Environment", 1st Symposium on Genesis and Evolution of Organics in Space, 18–20 Jan 2024, IIST, Thiruvananthapuram, Jan. 2024.

R. Gangwar, "Development of efficient non-thermal atmospheric pressure plasma reactors for environmental applications using optical diagnostics", 1st International Workshop on Cold Plasma and Pulse Power Technologies for Food, Health, and Agriculture, 21–22 Dec 2024, IIT Jodhpur, Dec. 2024.

R. Gangwar, "Integration of Machine Learning approaches in spectroscopic diagnostic of nonthermal atmospheric pressure plasmas", 8th Asia-Pacific Conference on Plasma Physics, 3–8 Nov 2024, Malacca, Nov. 2024.

R. Gangwar, "Invited Talk at 23rd National Conference on Atomic and Molecular Physics (NCAMP23)", 20–23 Feb 2023, Indian Institute of Space Science and Technology (IIST), Trivandrum, Kerala, India, Feb. 2023.

R. Gangwar, "Invited Talk in One Day Seminar on Atomic and Molecular Spectroscopy", 8 Feb 2023, Justice Basheer Ahmed Sayeed College for Women, Chennai, Feb. 2023.

R. Gangwar, "Role of Plasma Diagnostics in Developing Efficient Atmospheric Pressure Plasma Reactors forWastewater Treatment", 38th National Symposium on Plasma Science & Technology, 4–8 Dec 2023, UPES, Dehradun, Dec. 2023.

R. Gangwar, "Invited Talk at the 6th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2022)", 9–14 Oct 2022, e-Conference, Oct. 2022.

R. Gangwar, "Invited Talk at National Conference on Recent Developments and Evolving Trends in Plasma Science and Technology", 22–24 Sep 2022, Bharathiar University, Coimbatore, Tamil Nadu, Sep. 2022.

R. Gangwar, "Lectures and Tutorial in Pre-conference Workshop on Modelling and Simulation of Industrial Plasmas", 22–24 Sep 2022, Bharathiar University, Coimbatore, Tamil Nadu, Sep. 2022.

R. Gangwar, "Invited Talk at the 37th National Symposium on Plasma Science & Technology", 12–14 Dec 2022, IIT Jodhpur, Dec. 2022.

R. Gangwar, "Invited Talk in Refresher Course on Physics", 20 Oct–3 Nov 2021, organized under PMMMNMTT scheme by TLC, Ramanujan College, University of Delhi and Harish Chandra PG College, Varanasi, Oct. 2021.

R. Gangwar, "Invited Talk at 8th Topical Conference (TC 2020) of ISAMP", 3–5 Mar 2020, IIT Roorkee, Mar. 2020. 

R. Gangwar, "Invited Talk at FOODBIZZ India", 2019, 2019.

R. Gangwar, "Invited Lectures and Tutorials in SERB DST School on Plasma Materials Processing", 3–22 Jun 2019, IIT Bombay, Jun. 2019.

Reviewer for various international journals, including journals published by IEEE, Elsevier, ScienceDirect, Wiley, IOP Publishing, Springer, and APS.

Guest Editor, IEEE Transactions on Plasma Science (IEEE-TPS), Special Issue on Plasma 2025.

Member, Scientific Advisory Board of various national and international conferences.

Reviewer/Evaluator for many PhD theses, project proposals, books and academic evaluations.

Executive Board Member, Plasma Science Society of India.

Executive Board Member, Power Beam Society of India.

Life Member, Indian Society of Atomic and Molecular Physics (ISAMP).

Life Member, Indian Physics Association (IPA)

Life Member, Plasma Science Society of India (PSSI)

Life Member, Power Beam Society of India (PSI)

LifeMember, Division of Plasma Physics, Association of Asia Pacific Physical Societies (AAPPS-DPP)



Address:

Department of Physics
IIT Tirupati 
INDIA - 517 619
Email: ph_office@iittp.ac.in
Ph: 0091-877-250-3451


© Department of Physics, IIT Tirupati - 517 619 (INDIA) 



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