Radiation Physics: Radiation Hazards and Mitigation Techniques, Radiation shielding materials, Environmental radioactivity measurements using SSNTDs, CFD Modeling of environmental radioactive pollutants
Nanotechnology: Radiation-Induced material modifications,1D & 2D Nanomaterials, II-VI Semiconductor compound for sensing applications.
Bio-nanomaterials for antimicrobial and drug delivery  applications

Experience :

Teaching: 37 Years

• Research Publications Total: 777:(Int./Nat. Journals: 217, Conf.Proc.:  64, Pres. in conf. etc.:  496)Google Scholar Link: https://scholar.google.com/citations?hl=hi&user=uO_S-SIAAAAJ&view_op=list_works&sortby=pubdateResearchgate Link: https://www.researchgate.net/profile/R_P_ChauhanLink for B.Tech-1st sem Lectures: https://tinyurl.com/RPCNITK

  Link for B.Tech-2nd sem Lectures: https://tinyurl.com/RPCBT2

  Link for Ph.D RM Lectures: https://tinyurl.com/RPCPhDRM

  Link for M.Tech-1st sem Lectures: https://tinyurl.com/MTech-1stsem

  Link for M.Tech-2nd sem Lectures: https://tinyurl.com/MTech2nd

  • R & D Projects                         : 10 (2 UGC+ 2 BRNS+6 IUAC)
  • Patents awarded and Filed    : 2
  • Ph.D. thesis Supervised           : 21 (completed=15,ongoing=6)   
  • M.Phil. thesis supervised        : 18
  • M.Tech Dissert. supervised     : 78
  • M.Tech Minor Projects             : 40
  • Books/chapter published        : 12

  List of SCI Journal Publications (last 5 Years):

  34. 1. Lalita Rani, RP Chauhan. Structural, Morphological and Antibacterial Studies of Solvothermally Synthesized ZnS Nanostructures: Effects of Sulphur Precursors, Indian Journal of Engineering and Material Sciences, 2023, SCI,. https://doi.org/10.56042/ijems.v30i3.3664
      2. Vaishali Sood, RP Chauhan. Analytical Mapping of Materials Science in Quantum Computing using Cite Space, Indian Journal of Engineering and Material Sciences, 2023, , SCI,. https://doi.org/10.56042/ijems.v30i3.3672
      3. Jaspreet Kaur, Navneet Kaur, Tripti Gupta, RP Chauhan, Annu Sharma. Study on the Effect of UV Exposure on WO3/PVA based Nanocomposite Films, Indian Journal of Engineering and Material Sciences, 2023, SCI, IF- 0.9. https://doi.org/10.56042/ijems.v30i3.3701
      4. Tripti Gupta, RP Chauhan. Thickness dependent structural, optical, and electrical properties of ZnSe thin films, Indian Journal of Engineering and Material Sciences, 2023, SCI, IF- 0.9. https://doi.org/10.56042/ijems.v30i3.3669
      5. Deep Shikha, Vimal Mehta, Mahesh Kumar, RP Chauhan. Tailoring the Properties of Nanocrystalline Tin(II) Selenide Films through Precursor Concentration Modulation, Indian Journal of Engineering and Material Sciences, 2023, SCI, https://doi.org/10.56042/ijems.v30i3.3666
      6. Devender Gehlawat, RP Chauhan, K Kant, SK Chakarvarti. Electrical Properties of Gamma-rays Exposed 1D Nanostructures, Indian Journal of Engineering and Material Sciences, 2023, SCI,  https://doi.org/10.56042/ijems.v30i3.3849
      7. Lalita Rani , P. Chauhan. Antibacterial Activity of Solvothermally Synthesized PVP/EDTA Encapsulated Zinc Sulphide Nanoparticles Embedded in Polyacrylonitrile (PAN) Electrospun Nanofibers. Journal of Cluster Science (2023) 34:1789–1804, 33 (2022) 102306. https://doi.org/10.1007/s10876-022-02353-z, SCI, IF 2.7
      8. Tripti Gupta , P. Chauhan. Optical, dielectric and photocatalytic properties of ZnO, ZnSe, and ZnO/ ZnSe photocatalyst. Optical Materials 142 (2023) 114045, SCI, IF 3.9 https://doi.org/10.1016/j.optmat.2023.114045
      9. Lalita Rani ,P. Chauhan. Impact of surfactant (EDTA) on the properties of zinc sulphide nanoparticles and their antibacterial activity. Surfaces and Interfaces, 33 (2022) 102306. https://doi.org/10.1016/j.surfin.2022.102306, SCI, IF 6.2
      10. Amit Kumar, Rajat Parkash, Ajay Garg, Nisha Mann, Jawahar Lal, RP Chauhan. Multilayer Stack Method for Precise Measurement of Radon Diffusion Coefficient of Different Materials. Indian Journal of Pure & Applied Physics, 61, 2023, 450-454. DOI: 10.56042/ijpap.v61i6.2416, SCI, IF:0.846
      11. Jaswinder Kaur, Deep Shikha, Vimal Mehta, RP Chauhan. Assessment of Radionuclide Concentration and Exhalation Rates in some NORMs and TENORMs of Shivalik Region. Indian Journal of Pure & Applied Physics, 61, 2023, 520-525. DOI: 10.56042/ijpap.v61i6.2435, SCI, IF:0.846
      12. P Nehra, RP Chauhan. Antimicrobial activity of nanocellulose composite hydrogel isolated from an agricultural waste. Archives of Microbiology (2023) 205:133, https://doi.org/10.1007/s00203-023-03454-7, SCI, IF: 2.729
      13. V Devi, E Garg, RP Chauhan. An Investigation of Radiological Risk in Test Dwelling through Experimental and Simulation Approaches. Indian Journal of Pure & Applied Physics, 61, 2023, 389-400. DOI: 10.56042/ijpap.v61i6.2405, SCI, IF:0.846.
      14. Rajat Parkash, A Kumar, RP Chauhan. Assessment of Natural Radionuclides Content and Radon Exhalation of Clay Pulverized Fly Ash Bricks. Indian Journal of Pure & Applied Physics, 61, 2023, 416-422. DOI: 10.56042/ijpap.v61i6.2411, SCI, IF:0.846.
      15. Ripsa Rani Nayak, Tripti Gupta and P. Chauhan. Plant metabolites assisted green synthesis of ZnSe: structural, optical and transport properties. Chemical Papers, 26 June 2022, Springer, SCI, IF-2.146. https://doi.org/10.1007/s11696-022-02350-6
      16. Jaya Khatter, P. Chauhan. “Visible light-motivated photo-catalytic activity of CdS-Cu₉S₅ heterostructure for degradation of methylene blue.”Applied Nanoscience 2022, Springer, SCI IF-3.674 DOI- https://doi.org/10.1007/s13204-022-02357-1
      17. Gupta, T., & Chauhan, R. P. (2022). Improved crystallinity, optical and electrical properties of ZnSe–Se2O5 films through O+ implantation. Vacuum, 111215. https://doi.org/10.1016/j.vacuum.2022.111215, SCI Impact Factor: 4.11
      18. Vandana Devi, and P. Chauhan. ” Simulating the dispersion behavior of indoor thoron using Computational Fluid Dynamics (CFD).” Mapan (2022)DOI. 10.1007/s12647-022-00557-2(Springer, SCI IF-1.009).
      19. Poonam Nehra, P. Chauhan. “Facile synthesis of nanocellulose from wheat straw as an agriculturalwaste.” Iranian Polymer Journal, 2021. Scopus, SCI IF-1.899, DOI- https://doi.org/10.1007/s13726-022-01040-0
      20. Gupta, T., & Chauhan, R. P. (2021). Photocatalytic degradation of water pollutants using II-VI semiconducting catalysts: A comprehensive review. Journal of Environmental Chemical Engineering, https://doi.org/10.1016/j.jece.2021. 106734, SCI Impact Factor: 7.968
      21. Rupinderjeet Kaur,Deep Shikha, Anjali Kaushal,Ruchie Gupta,Supreet Pal Singhand P. Chauhan. Measurement of indoor 222Rn, 220Rn and decay products along with naturally occurring radionuclides in some monuments and museums of Punjab, India. Journal of Radioanalytical and Nuclear Chemistry (2021) 330:1357–1364. https://doi.org/10.1007/s10967-021-07996-2. SCI IF-1.754.
      22. Jaya Khatter, P. Chauhan. “Impact of argon ion implantation on CdS nanorod mesh.” Materials Letters, 2022. Elsevier, SCI IF-3.423, DOI-https://doi.org/10.1016/j.matlet.2021.131082
      23. Deep Shikha, Vimal Mehta and P. Chauhan. Effect of different concentrations of the precursor on the properties of chemically induced ZnSe thin films. Optical Materials 126 (2022) 112093, Elsevier, SCI, Scopus  IF-3.08 DOI- https://doi.org/10.1016/j.optmat.2022.112093
      24. Surbhi Slathia, Tripti Gupta, P. Chauhan. Green synthesis of Ag–ZnO nanocomposite using Azadirachta indica leaf extract exhibiting excellent optical and electrical properties. Physica B: Physics of Condensed Matter, 621 (2021) 413287. SCI Impact factor: 2.436 DOI: https://doi.org/10.1016/j.physb. 2021.413287
      25. Jaya Khatter and P. Chauhan. Nitrogen ion induced CdS clusterization: Structural, morphological, and optoelectrical properties. Journal of Alloys and Compounds  888 (2021) 161604, SCI Impact factor: 5.316 DOI: https://doi.org/10.1016/j.jallcom.2021.161604
      26. Tripti Gupta and P. Chauhan. Structural, morphological, and electrical properties of ZnSe nanostructures: Effects of Zn precursors. Surfaces and Interfaces (2021), SCI Impact factor: 6.137  https://doi.org/10.1016/j.surfin.2021.101196
      27. Saloni Goyal and P. Chauhan “Ammonia gas sensing response of gamma irradiated CdTe thin films” Material Science in Semiconductor Processing, 121, 105394 (2021). (SCI, Impact factor – 3.927). DOI: https://doi.org/10.1016/j.mssp.2020.105394
      28. Jaya Khatter, P. Chauhan (2021). “Gamma-ray induced modifications on CdS nanorod mesh: Structural, optical, and electrical properties” Radiation Physics and Chemistry (SCI IF-2.858), DOI: https://doi.org/10.1016/j.radphyschem.2021.109353.
      29. Devi, V and Chauhan, R. P. Implications on dose estimation and dispersion patterns of thoron in a typical indoor environment. Radiation and Environmental Biophysics, 2021 https://doi.org/10.1007/s00411-021-00899-6.
      30. Tripti Gupta and P. Chauhan. Impact of N+ ion implantation on the properties of ZnSe thin films. Journal of Materials Science: Materials in Electronics (2021), SCI Impact factor: 1.798 https://doi.org/10.1007/s10854-021-05335-5
      31. Amit Kumar and P. Chauhan. Measurement of optimal thickness of radon‑resistant materials for insulation using diffusion coefficient. Journal of Radioanalytical and Nuclear Chemistry, DOI-https://doi.org/10.1007/s10967-020-07507-9 (2020), SCI Impact factor: 1.24.
      32. Suresh Panchal and P. Chauhan. Nickel ion beam induced modifications in Cu–Se heterojunction nanowires. Journal of Materials Science: Materials in Electronics (2020) 31:693–703, SCI Impact factor: 1.798 https://doi.org/10.1007/s10854-019-02577-2
      33. Jaya Khatter and P. Chauhan. Effect of temperature on properties of cadmium sulfide nanostructures synthesized by solvothermal method. Journal of Materials Science: Materials in Electronics (2020) 31:2676–2685, SCI Impact factor: 1.798 ttps://doi.org/10.1007/s10854-019-02807-7.
      34. Sushanta K Sethi, Sachin Kadian, Anubhav Goel, Rishi Pal Chauhan, Gaurav Manik.Fabrication and Analysis of ZnO Quantum Dots Based Easy Clean Coating: A Combined Theoretical and Experimental Investigation. Chemistry Europe, 5 (29) 2020: 8942-8950. SCI impact factor-857.
      35. Ngangom Robert, Manjul Tripathi, Gaurav Trivedi, RP Chauhan, Arun Oinam, Ranjit Singh, and Parsee Tomar. A technique to increase the treatment plan indices in GammaKnife: A retrospective study. Jour. of Radiosurgery and SBRT, Vol. 7, pp. 245-248 (2020).
      36. R Gupta, R P Chauhan, R Kumar. Influence of gamma radiation on properties of electrodeposited lead selenide nanowires. Optical Materials, 99 (2020) 109538, SCI Impact factor: 2.687.
      37. Vadera, N., Ashokan, A., Gowd, G. S., Sajesh, K. M., Chauhan, R.P., Jayakumar, R., … & Koyakutty, M. (2020). Manganese doped nano-bioactive glass for magnetic resonance imaging (vol 160, pg 335, 2015). MATERIALS LETTERS, 269, SCI Impact factor: 3.019.
      38. Sushanta K Sethi, Lokesh Soni, Uday Shankar, Rishi Pal Chauhan, Gaurav Manik. A molecular dynamics simulation study to investigate poly (vinyl scetate)-poly (dimethyl siloxane) based easy-clean coating: An insight into the surface behavior and substrate interaction. Journal of Molecular Structure, 2020. SCI Impact factor:12
      39. S Kadian, G Manik, N Das, P Nehra, R P Chauhan, P Roy. Synthsis, chacterization and investigation of synergistic antimicribil activity and cell viability of silver-sulfur doed graphene quantum dot (Ag@S-GQDs) nanocomposites. Journal of Materials Chemistry B, 2020, SCI Impact factor: 5.047
      40. HD Ahlawat, R P Chauhan. Detection and Monitoring of Forest Fire Using Serial Communication and Wi-Fi Wireless Sensor Network. Handbook of Wireless Sensor Networks, 2020 PP 464-492.
      41. Devi, V., Kumar, A., and Chauhan, R. P. (2019). A study on radionuclides content and radon exhalation from soil of Northern India. Environmental Earth Sciences, 78(16), 506.
      42. Devi, V., and Chauhan, R.P. (2019). Estimation of natural radionuclide and exhalation rates of environmental radioactive pollutants from the soil of northern India. Nuclear Engineering and Technology.
      43. Saloni Goyal, R P Chauhan. Influence of Au9+ ion irradiation on the properties of electrodeposited CdTe thin films. Nuclear Inst. and Methods in Physics Research B 461 (2019) 55–62. SCI Impact factor: 1.798, https://doi.org/10.1016/j.nimb.2019.09.020.
      44. Ritika Choudhary and R P Chauhan. Thickness dependent variation in structural, optical and electrical properties of CdSe thin films. Journal of Materials Science: Materials in Electronics (2019), SCI Impact factor: 1.798 https://doi.org/10.1007/s10854-019-00870-8
      45. Suresh Panchal & P. Chauhan. An investigation of modifications induced by silver ion beam in selenium nanowires. Radiation Physics and Chemistry, https://doi.org/10.1016/j.radphyschem.2019.02.048
      46. Saloni Goyal, R P Chauhan. Substrate temperature dependent variation in the properties of cadmium telluride thin films deposited on glass. Journal of Materials Science Materials in Electronics, (2019) 30:1345–1353, SCI Impact factor: 1.798, https://doi.org/10.1007/s10854-018-0402-5.
      47. Suresh Panchal & P. Chauhan. Variation in Structural, Electrical and Optical Properties of Selenium Nanowires after Irradiation with Ni6+ Ions. Electron. Mater. Lett. 2019, 15:216–226. DOI 10.1007/s13391-018-00106-7
      48. Chetna Narula and P. Chauhan. “Enhanced conduction in CdSe nanowires on 200 keV phosphorous negative ion implantation.” Materials Research Bulletin, 108 (2018) 242–249. https://doi.org/10.1016/j.materresbull.2018.09.018 SCI Impact factor=2.87.
      49. Sachin Kadian, Brahm Dutt Arya, Sumit Kumar, Shailesh N. Sharma, Rishi Pal Chauhan, Ananya Srivastava, Pranjal Chandra, and Surinder P. Singh. Synthesis and Application of PHT-TiO2 Nanohybrid for Amperometric Glucose Detection in Human Saliva Sample. Electroanalysis, 30, 1– 11, 2018, DOI: 10.1002/elan.201800207, SCI Impact factor=2.85.
      50. Saloni Goyal, R P Chauhan. Effect of ion implantation on the properties of electrodeposited CdTe thin films. Bulletin of Materials Science, 41:131, 2018, https://doi.org/10.1007/s12034-018-1649-4, SCI Impact factor= 925.
      51. Ngangom Robert, R P Chauhan, Arun Oinamand Bhavana Rai. Angular dependency correction of 2D planar detector I’mRT MatriXX an offline dosimetry system used for IMRT pre-treatment verification. Biomed. Phys. Eng. Express 4 (2018) 055015, 2018. Doi http://iopscience.iop.org/ journal/2057-1976.
      52. Deep Shikha Vimal Mehta, Rishi Pal Chauhan, Gurmel Singh Mudahar. Measurement of Variation of Radon-Thoron and their Progeny Concentrations in Dwellings using Pin Hole Based Dosimeters. Aerosol and Air Quality Research, 18: 811–819, 2018. SCIE Impact factor= 814 doi: 10.4209/aaqr.2017.10.0405
      53. Rashi Gupta, P. Chauhan, S.K. Chakarvarti, M. K. Jaiswal, D. Ghoshal,S. Basu, S. Suresh, Stephen F, Bartolucci, N. Koratkar, Rajesh Kumar. Enhanced field emission from copper nanowires synthesized using ion track-etch membranes as scaffolds. Journal of Materials Science Materials in Electronics, (2018) 29:19013–19027. SCI Impact factor: 1.798, https://doi.org/10.1007/s10854-018-0027-8.
      54. Neha Saini, Saloni Goyal, Chetna Narula, P. Chauhan. Detection of H2O2 by Fe3O4/CdTe magnetic/fluorescent Nanocomposites. Journal of Materials Science: Materials in Electronics, 2018. https://doi.org/10.1007/s10854-018-9760-2
      55. Ritika Choudhary and R P Chauhan. Nitrogen ion implantation effects on the structural, opticaland electrical properties of CdSe thin film. Journal of Materials Science Materials in Electronics, 2018. SCI Impact factor: 1.798. https://doi.org/10.1007/s10854-018-9376-6.
      56. Deep Shikha, Vimal Mehta,Jeewan Sharma and   P. Chauhan. Electrical characterization of nanocrystalline SnSe and ZnSe thin films: effect of annealing. Journal of Materials Science Materials in Electronics, 2018. SCI Impact factor: 1.798, https://doi.org/10.1007/s10854-018-9489-y.
      57. Nisha Mann, Amit Kumar, AJay Garg, Sushil Kumar and R,P Chauhan. Measurement of radium, thorium and potassium from some Indian building construction materials. ISST Journal of Applied Physics, Vol. 9 No. 1, (Jan. – June 2018), p.p. 84-86.
      58. Vimal Mehta, Deep Shikha,Jeewan Sharma and   P. Chauhan. Temperature effect on properties of chemical induced nanocrystalline ZnSe thin films. Journal of Materials Science Materials in Electronics, 2018. SCI Impact factor: 1.798, DOI10.1007/s10854-018-8897-3
      59. Anuj Bathla, Chetna Narula, P. Chauhan. Hydrothermal synthesis and characterization of silica nanowires usingrice husk ash: an agricultural waste. Journal of Materials Science Materials in Electronics, 2018. SCI Impact factor: 1.798, https://doi.org/10.1007/s10854-018-8598-y
          

          Details of Scholars guided/guiding for Ph.D
          S.N	Name	Regn. & date	Thesis Topics	Status
          	Tripti Gupta	2K19-NITK-PhD- 61900025/2019	Semiconducting Nanostructures for sensing applications.	Completed
          	Poonam Nehra	2K18/NITK/Ph.D.-6180098/ 2018	Biomedical Applications of Nanocellulose Extracted from Wheat Straw	Ongoing
          	Jaya Khatter	2K18-NITK-PhD- 6180019/ 2018	Modifications in the Properties of II-VI Semicond. Nanostructures by Ion Beam	Completed
          	Vandana Devi	2K17-NITK-PhD- 6170050/2017	Study of radon and its decay products through modeling and measurements	Completed
          	N.Robert Singh	2K17-NITK-PhD-6170061/2017	Study of Online and Offline patient dosimetry system in radiotherapy	Completed
          	Saloni Goyal	2K16/NITK/Ph.D/ 6160032/2016	Investigation of radiation impact on CdTe thin films for gas sensing application	Completed
          	Suresh Panchal	2K15/NITK/PhD/ 6150003/2015	Ion beam Induced Modifications In Semiconducting Nanostructures	Completed Jan. 2020
          	Ritika Chaudhary	2K15/NITK/PhD/ 6150012/2015	Radiation-Induced Modifications in  Nanostructures	01.01.2019
          	Chetna Narula	2K14/NITK/PhD/6140076/11.8.14	Modifications in CdSe nanowires by ion implantation and gamma irradiation	12.09.2018
          	Pallavi Rana	2K12/NITK/PhD/6120005/23.7.12	Study of the radiation-induced modifications in one-dimensional nanostructures	26.12.2014
          	Neetika Chauhan	2K12/NITK/PhD/ 1411/12.01.2012	Indoor radon studies through measurements and CFD modeling	30.06.2015
          	Amit Kumar	2K12/NITK/PhD/ 1412/12.01.2012	Estimation of Indoor radon-thoron levels and mitigation strategies	21.04.2014
          	Aman deepKaur	2K11/NITK/PhD/ 1399/01.09.2011	Study of electrical and structural properties of irradiated nanostructures	24.06.2014
          	Pooja Chauhan	2K11-NITK-Ph.D 1373/25.04.2013	Estimation of Fertilizers Induced Radioactivity in Plants	25.04.2013
          	Devender	2K09/NITK/PhD/ 1249/26.08.2009	Radiation-induced modifications in nano-/microstructures	26.06.2012
          	Monika Gupta	2K09/NITK/Ph.D/ 1224/Jan. 2009	Estimation of Natural Radioactivity in Tech. Enhanced and Naturally Occurring Materials	June 2011
          	Alka Singhal	2/A/700343/CCUM 03/10/2007	Radon Estimation and Mitigation Methods	11/08/2012
          	Ajay Garg	612087510009/CDLU 14/08/2008	Estimation of Natural Radioactivity in Dwellings and Industrial Units of Eastern Haryana	13/12/2011
          	Vimal Mehta	GRC(S)96-89/P UP 13/10/2011	Estimation of Natural Radioactivity in Environment and Naturally Occu