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Chandra Shekhar Prajapati

Publications

Invited Talks:

  • Indigenously Developed Gas Sensor Technology for Various Applications: Air Quality Monitoring, Leak Detection, Breath Analysis, ISSS Institute of Smart Structures and Systems 2020 (Webinar). YouTube link: https://www.youtube.com/watch?v=RhBtPUsiYRQ&fbclid=IwAR0USyz3qvIg8a3u6Iu...
  • Gas Sensors System: Micro to Nano (Indigenously Developed Technology for Various Applications), “Survival Strategies for the post COVID-19 ERA: Perspective From Science, Technology and Social Science” 20th-26th May 2020, Physics Department at Ewing Christian College, Allahabad University, Allahabad, India.
    Link to video:  https://www.facebook.com/ecc.physics.79/videos/109182897474416/
  • Indigenous Gas Sensors (Sensor Product Talk), Think Nano 2017, 14-15 September 2017, CeNSE, IISc Bangalore, India. 
  • Air quality monitoring sensors, in “Brainstorming session on sensors and its effective utilization in environmental monitoring and management”, 20 August 2018, CSIR-NEERI Nagpur, India
  • Sensor Development, “Realtime Nationwide Low-Cost Sensor Network for Air Quality Monitoring”, Ganga Auditorium, Indira Paryavaran Bhavan, Ministry of Environment, Forest and Climate Change, Government Ministry, New Delhi, Date: August 29, 2018.
  • Air quality monitoring sensors: Towards a miniaturized, low-cost, and scalable technology, 3rd AIR-O-THON - Bangalore Edition, Capitol Hotel, Raj Bhavan Rd, Vasanth Nagar, Bangalore, Date: August 31st, 2018.
  • Micro to Nano Gas Sensors: Indigenously Developed Technology for Various Applications, International Conference on “Nanomaterials Driven Advances in Chemical and Biosensors” (NanoSe - 2019), Department of Bioelectronics & BioSensors, Alagappa University, Karaikudi, Tamil Nadu, India.

Publications:

  • Sensing of LPG with nanostructured zinc oxide thin films grown by spray pyrolysis technique, C.S. Prajapati, S.N. Pandey and P.P. Sahay, Physica B: Condensed Matter, 406 (2011) 2684-2688, DOI:10.1016/j.physb.2011.02.075.
  • Growth, structure and optical characterization of Al-doped ZnO nanoparticle thin films, C.S. Prajapati and P.P. Sahay, Crystal Research Technol. 46, No. 10, (2011) 1086-1092, DOI: 10.1002/crat.201100192.
  • Alcohol-sensing characteristics of spray deposited ZnO nano-particle thin films, C.S. Prajapati and P.P. Sahay, Sensors and Actuators B: Chemical, 160 (2011) 1043 – 1049, DOI:10.1016/j.snb.2011.09.023
  • Studies on Metal-Oxide Semiconductor ZnO as a Hydrogen Gas Sensor, C.S. Prajapati and P.P. Sahay, J. Nano- Electron. Phys. 3, No1, (2011) 714-720.
  • Effect  of  precursors  on structure,  optical  and  electrical  properties  of  chemically  deposited nanocrystalline ZnO thin films, C.S. Prajapati and P.P. Sahay, Applied Surface Science, 258 (2012) 2823-2828.
  • Influence  of  In  doping  on  the  structural,  optical  and  acetone  sensing  properties  of  ZnO nanoparticulate thin films, C.S. Prajapati and P.P. Sahay, Materials Science in Semiconductor Processing, 16 ¬(2013) 200 – 210.
  • Optoelectronics and formaldehyde sensing properties of tin-doped ZnO thin films, C.S. Prajapati, Ajay Kushwaha and P.P. Sahay, Applied Physics A: Materials Science & Processing, 113 (2013) 651 – 662.
  • Influence of Fe doping on the structural, optical and acetone sensing properties of sprayed ZnO thin films, C.S. Prajapati, Ajay Kushwaha and P.P. Sahay, Materials Research Bulletin, 48 (2013) 2687-2695.
  • Study of Zn-Cu Ferrite Nanoparticles for LPG Sensing, Anuj Jain, Ravi Kant Baranwal, Ajaya Bharti, Z. Vakil, and C.S. Prajapati, The Scientific World Journal, 2013 (2013) pp 7.
  • Effect of Al dopants on the structural, optical and gas sensing properties of spray-deposited ZnO thin films, C.S. Prajapati, Ajay Kushwaha and P.P. Sahay, Materials Chemistry and Physics, 142 (2013) 276-285.
  • Experimental   investigation   of   spray-deposited   Fe-doped   ZnO   nanoparticle   thin   films: Structural, microstructural and optical properties, C.S. Prajapati, Ajay Kushwaha and P.P. Sahay, Journal of Thermal Spray Technology, 22 (2013) 1230-1241.
  • Tailoring the Microstructural, Optical, and Electrical Properties of Nanocrystalline WO3 Thin Films Using Al Doping, Ramnayan Mukherjee, C.S. Prajapati, and P.P. Sahay, Journal of Materials Engineering and Performance, 23 (2014) 3141-3151.
  • Tin-Incorporation Induced Changes in the Microstructural, Optical, and Electrical Behavior of Tungsten Oxide Nanocrystalline Thin Films Grown Via Spray Pyrolysis, R. Mukherjee, C.S.  Prajapati, P.P. Sahay, Journal of Thermal Spray Technology 23 (2014), 1445-1455.
  • Single Chip Gas Sensor Array for Air Quality Monitoring, Chandra Shekhar Prajapati, Rohith Soman, S. B. Rudraswamy, Manjunath Nayak and Navakanta Bhat, IEEE Journal of Microelectromechanical Systems, 26 (2017) 433 -439.
  • Honey-comb type ZnO nanostructures for sensitive and selective CO detection, C. S. Prajapati, Dennis Visser, Srinivasan Anand and Navakanta Bhat, Sensors and Actuators B: Chemical 252 (2017) 764 – 772.
  • Investigations of Sol-Gel ZnO Films Nanostructured by Reactive Ion Beam Etching for Broadband Anti-Reflection, D. Visser, Z. Ye, C. S. Prajapati, N. Bhat, S. Anand, ECS Journal of Solid State Science and Technology, 6 (9) P653-P659 (2017). 
  • Self-heating oxidized suspended Pt nanowire for high-performance hydrogen sensor, C. S. Prajapati and Navakanta Bhat, Sensors and Actuators B: Chemical, 260 (2018) 236 – 242. 
  •   Influence of electrodeposition modes on the electrochemical performance of MnO2 films prepared using anionic MnO4− (Mn7+) precursor, R.K. Mishra, C.S. Prajapati, R.R. Shani, A.K. Kushwaha, P.P. Sahay, Ceramics International, (2017) (In Press), DOI: 10.1016/j.ceramint.2017.12.224
  • Ppb level detection of NO2 using WO3 thin film based sensor: Material optimization, Device fabrication and Packaging, C. S. Prajapati and Navakanta Bhat, RSC advances, 8 (2018) 6590 -6599. 
  • An ultra-low power nanosensor array for selective detection of air pollutants, C. S. Prajapati, S. benedict and Navakanta Bhat, Nanotechnology, 31, (2019) 025301.
  • Supercapacitive performance of electrochemically synthesized nanocrystalline MnO2 films using different plating solutions: A comparative study, R.K. Mishra, C.S. Prajapati, P.P. Sahay, Journal of Alloys and Compounds, 749 (2018) 172-179, DOI: 10.1016/j.jallcom.2018.03.271, Impact Factor – 3.133, (Citation – 2), Q1 https://www.sciencedirect.com/science/article/pii/S0272884217329309
  • Highly Sensitive CO Sensor Based on Thickness-Selective ZnO Thin Film: Device Fabrication and Packaging, C. S. Prajapati, and Navakanta Bhat, Crystal Research & Technology, 2019, 1800241, 1 – 10.
  • Modification in the microstructural and electrochromic properties of spray-pyrolysed WO3 thin films upon Mo doping, Anil Kumar, C. S. Prajapati, P. P. Sahay Journal of Sol-Gel Science and Technology 90 (2), 281-295, DOI: 10.1007/s10971-019-04960-1.
  • Results on the microstructural, optical and electrochromic properties of spray deposited MoO3 thin films by the influence of W doping, Anil Kumar, C. S. Prajapati, P. P. Sahay, Materials Science in Semiconductor Processing, 104 (2019) 104668, DOI: 10.1016/j.mssp.2019.104668.
  • Reduction of humidity effect in WO3 thin film based NO2 sensor using physiochemical optimization" Sujoy Ghosh, Murugaiya Sridar Ilango, Chandra Shekhar Prajapati* and Navakanta Bhat, Crystal Research and Technology (2020) Accepted.
  • Activate Zeolite Filter: A gas sensor signal stabilization and enhancement, C.S. Prajapati, MI Sridar, S Benedict, S Ghosh, N Bhat, 2019 IEEE Sensors, 1-4.
  • A baseline correction model for humidity and temperature compensationWO3 film based sensor for NO2 detection, S Ghosh, A Ghosh, N Kodavali, C.S. Prajapati, N Bhat, 2019 IEEE Sensors, DOI: 10.1109/SENSORS43011.2019.8956920

 

Book Chapter(s):

  •   “Chemiresistors and Their Microfabrication”, Baloria V., Prajapati C.S., Bhat N., Gupta G. (2020), Functional Nanomaterials. Materials Horizons: From Nature to Nanomaterials. Springer, Singapore.

Patents

  • · Ultra-low Power MEMS Nano Sensor array, C. S. Prajapati and Navakanta Bhat, (PCT Filed: PCT/IN2018/050646), 10th October 2018.
  • · MEMS Integrated Ultra-low Power Nano-wire Gas Sensor, C. S. Prajapati and Navakanta Bhat, (PCT Filed: PCT/IN2018/050670), 16th October 2018.

Conference and Seminars

  •  Preparation and Characterization of ZnO nano-particulate thin film, C. S. Prajapati, P. P. Sahay, Presented (Oral) in the 3rd National Symposium for Materials Research Scholars (MR-10) at Indian Institute of Technology Bombay, Mumbai, India (May 7-8, 2010).
  • Studies on metal-oxide semiconductor ZnO as a hydrogen gas sensor, C. S. Prajapati, P. P. Sahay, Presented (Poster) in the International Symposium on Semiconductor Materials and Devices (ISSMD 2011) at M.S. University of Baroda, Vadodara, India (28-30 January 28-30, 2011).
  • Studies on alcohol sensing properties of ZnO thin film based sensor, C. S. Prajapati, P. P. Sahay, Presented (Poster) in the National Conference on Sensors and Actuators: Science to technology (NCSA-2011) at Center Glass & Ceramic Research Institute, Kolkata, India (March 11-12, 2011).
  • High acetone sensitivity in In-doped ZnO nanoparticulate thin films, C. S. Prajapati, P. P. Sahay, Presented (Poster) in the International conference on Nanomaterials and Nanotechnology at University of Delhi, India (December 18-21, 2011).
  • Studies of structural and optical properties of In-doped ZnO nanocrystalline thin films, C. S. Prajapati, P. P. Sahay, Presented (Oral) in the International conference on Frontiers of Nanoscience, Nanotechnology and their Applications at Punjab University, Chandigarh, India (February 16-18, 2012).
  • Microstructural and optical Properties of spray deposited nanocrystalline Sn-doped ZnO thin films, C. S. Prajapati, P. P. Sahay, Presented (Poster) in the National symposium on Materials and Processing-2012 (MAP-2012) at Bhabha Atomic Research Center, Mumbai, India (October 10-12, 2012).
  • Microstructural and optical properties of spray deposited nanocrystalline Sn- doped ZnO thin films, C. S. Prajapati, P. P. Sahay, Presented (Oral) in the International Symposium for Research Scholars on Metallurgy (ISRS-2012) at Indian Institute of Technology Madras, Chennai, India (December 13-15, 2012).
  • Nanosensor array development for fast and accurate detection of gases, C. S. Prajapati, Navakanta Bhat, Presented (Oral) in the ISPTS-2015, 7 to 10 March 2015 at Centre for Materials for Electronics Technology [C-MAT], Pune, India.
  • High sensitivity for Nitrogen Dioxide by Thickness Selective WO3 Thin Film Sensor in Temperature Impulse Mode (ICMAT15-A-0089), C. S. Prajapati, Navakanta Bhat, Presented (Oral) in the ICMAT & IUMRS-ICA 2015, 28 June to 03 July 2015 in Singapore.
  • Comparative study of CO sensing characteristics of sputtered and chemically deposited nanocrystalline ZnO thin films, C.S. Prajapati, D. Visser, Z. Ye, S.B. Basuvalingam, S. Anand, and Navakanta Bhat, Presented (Oral) in the IWPSD 2015, December 7 - 10, at IISc, Bangalore, India.