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Ajay Beniwal

Ajay Beniwal
Ajay Beniwal
 
PhD (Electronics and Communication Engineering), IIIT Allahabad

Contact Details

 
079-68261745
 
# 3211, FB-3, DA-IICT, Gandhinagar, Gujarat, India – 382007
 
https://sites.google.com/view/ajay-beniwal/home

Biography

Dr. Ajay Beniwal is currently serving as an Assistant Professor at Dhirubhai Ambani University (Formerly DA-IICT) - Gandhinagar, India. Prior to this, he worked as a Postdoctoral Research Fellow at University College London (UCL), UK and held the prestigious Marie Curie Postdoctoral Fellowship (UKRI funded) at the University of Glasgow, UK. He holds ongoing visiting and research affiliate positions at the UCL and University of Glasgow, respectively.

He completed his PhD in Electronics and Communication Engineering from Indian Institute of Information Technology (IIIT) – Allahabad, India, where he was recognized with the Emerging Researcher Award. He has been awarded with University Gold Medal during his Master’s degree.

Dr. Beniwal is also a recipient of DST INSPIRE Faculty Fellowship awarded by Ministry of Science & Technology, Government of India. His research interests include flexible and printed electronics, smart sensing technologies, sensor materials, sustainable and green electronics.

Specialization

Flexible and Printable Electronics for Healthcare and Digital Agricultural Applications, Smart Sensing Technologies with Wireless Connectivity, Sensor Materials and Nanocomposites, Sustainable and Green Electronics.

Publications

JOURNAL PUBLICATIONS:

  • Ajay Beniwal, Priyanka Ganguly, Gaurav Khandelwal, Rahul Gond, Brajesh Rawat and Chong Li, “Additive Strategies to Mitigate Humidity Interference Effects on PEDOT:PSS Sensors for Ammonia Detection,” IEEE Sensors Journal, vol. 25, no. 6, pp. 9357-9366, 2025. doi: 10.1109/JSEN.2025.3533298
  • Ajay Beniwal, Rahul Gond, Xenofon Karagiorgis, Brajesh Rawat and Chong Li, “Room Temperature Operated Fe2O3/PANI-based Flexible and Eco-friendly Ammonia Sensor with Sub-ppm Detectability,” IEEE Sensors Letters, vol. 9, no. 2, pp. 1-4, 2025. doi: 10.1109/LSENS.2025.3527229
  • P. Shukla, R. Gond, Ajay Beniwal, C. Li and B. Rawat, “Disposable and Highly Sensitive Humidity Sensor based on PEDOT:PSS/GO Heterostructure,” IEEE Journal on Flexible Electronics, 2025. doi: 10.1109/JFLEX.2025.3533498
  • Ajay Beniwal, Gaurav Khandelwal, Rudra Mukherjee, Daniel M. Mulvihill, Chong Li, “Eco-friendly textile-based wearable humidity sensor with multi-node wireless connectivity for healthcare applications,”
    ACS Applied Bio Materials, 7(7), 4772-4784, 2024. (doi: 10.1021/acsabm.4c00593)
  • Ajay Beniwal, Priyanka Ganguly, A. K. Aliyana, Gaurav Khandelwal, and Ravinder Dahiya, “Screen-printed graphene-carbon ink based disposable humidity sensor with wireless communication,” Sensors and Actuators B: Chemical, 374, 132731, 2023. doi: 10.1016/j.snb.2022.132731
  • X. Karagiorgis, G. Khandelwal, Ajay Beniwal, R. Chirila, P.J. Skabara, and Ravinder Dahiya, “Polydimethylsiloxane Foam-Based Fully 3D Printed Soft Pressure Sensors,” Advanced Intelligent Systems, 6, 2300367, 2024. doi: https://doi.org/10.1002/aisy.202300367
  • Ajay Beniwal, D. K. Neethipathi and Ravinder Dahiya, “PEDOT:PSS coated Screen Printed Graphene-Carbon Ink based Humidity and Temperature Sensor,” IEEE Journal on Flexible Electronics, vol. 2, no. 2, pp. 111-118, 2023, doi: 10.1109/JFLEX.2022.3228970.
  • Ajay Beniwal, Priyanka Ganguly, Rahul Gond, Brajesh Rawat and Chong Li, “Room Temperature Operated PEDOT: PSS Based Flexible and Disposable NO2 Gas Sensor,” IEEE Sensors Letters, vol. 7, no. 9, pp. 1-4, 2023. doi: 10.1109/LSENS.2023.3308518
  • Ajay Beniwal, Dina A. John, and Ravinder Dahiya, “PEDOT:PSS based disposable humidity sensor for skin moisture monitoring,” IEEE Sensors Letters, vol. 7, no. 3, pp. 1-4, 2023. doi: 10.1109/LSENS.2023.3245624
  • Deepan K. Neethipathi, Ajay Beniwal, A. Bass, M. Scott, and Ravinder Dahiya, “MoS2 modified screen printed carbon electrode based flexible electrochemical sensor for detection of copper ions in water,” IEEE Sensors Journal, vol. 23, no. 8, pp. 8146-8153, 2023. doi: 10.1109/JSEN.2023.3257188
  • Gaurav Khandelwal, A. S. Dahiya, Ajay Beniwal and Ravinder Dahiya, “V2O5 nanowires coated yarn based temperature sensor with wireless data transfer for smart textiles,” IEEE Journal on Flexible Electronics, vol. 2, no. 2, pp. 119-126, 2023. doi: 10.1109/JFLEX.2022.3227528
  • A. K. Aliyana, P. Ganguly, Ajay Beniwal, S. K. N. Kumar and Ravinder Dahiya, “Disposable pH Sensor on Paper Using Screen-Printed Graphene-Carbon Ink Modified Zinc Oxide Nanoparticles,” IEEE Sensors Journal, vol. 22, no. 21, pp. 21049-21056, 2022. doi: 10.1109/JSEN.2022.3206212
  • Ajay Beniwal, Sunny, “Room Temperature Operated Electrospun Nanofibers-Based SnO₂/PTh Sensor for Acetone Sensing Applications,” IEEE Transactions on Electron Devices, 68 (8), 4084-4089, 2021. doi: 10.1109/TED.2021.3093378
  • Ajay Beniwal, Sunny, “SnO2-ZnO-Fe2O3 tri-composite based room temperature operated dual behavior ammonia and ethanol sensor for ppb level detection,” Nanoscale (Royal Society of Chemistry), 12, 19732 - 19745, 2020. doi: https://doi.org/10.1039/D0NR05389A
  • Ajay Beniwal, Sunny, “Novel TPU/Fe2O3 and TPU/Fe2O3/PPy nanocomposites synthesized using electrospun nanofibers investigated for analyte sensing applications at room temperature,” Sensors & Actuators: B. Chemical, vol. 304, pp. 127384, 2020. doi: https://doi.org/10.1016/j.snb.2019.127384
  • Ajay Beniwal, Sunny, “Electrospun SnO2/PPy nanocomposite for ultra-low ammonia concentration detection at room temperature” Sensors & Actuators: B. Chemical, vol. 296, pp. 126660, 2019. https://doi.org/10.1016/j.snb.2019.126660
  • Ajay Beniwal, Suraj Lalwani, Sunny, “Baseline drift improvement through investigating a novel Ag doped SnO2/ZnO nanocomposite for selective ethanol detection” IEEE Transactions on Nanotechnology, vol. 18, pp. 412-420, 2019. doi: https://doi.org/10.1109/TNANO.2019.2912497
  • Ajay Beniwal, Vibhu Srivastava, Sunny, “Sol-gel assisted nano-structured SnO2 sensor for low concentration ammonia detection at room temperature” Materials Research Express, vol. 6, pp. 046421, 2019. doi: https://doi.org/10.1088/2053-1591/aafdd8
  • Ajay Beniwal, Sunny, “Highly selective and sensitive O2 plasma treated sputtered thin film sensor for sub-ppm level NH3 detection at room temperature” Journal of Materials Science: Materials in Electronics, vol. 30, Issue 3, pp 3144–3155, 2019. doi: https://doi.org/10.1007/s10854-018-00594-1
  • Ajay Beniwal, Sunny, “Apple fruit quality monitoring at room temperature using sol–gel spin coated Ni–SnO2 thin film sensor”, Journal of Food Measurement and Characterization, vol. 13, issue 1, pp 857–863, 2019. https://doi.org/10.1007/s11694-018-9998-7
  • Ajay Beniwal, Praveen Kumar Sahu, Sunny, “Sol-gel spin coating assisted room temperature operated nanostructured ZnO ethanol sensor with behavior transformation” Journal of Sol-Gel Science and Technology, vol. 88, Issue 2, pp 322–333, 2018. doi: https://doi.org/10.1007/s10971-018-4841-5
  • Suraj Kumar Lalwani, Ajay Beniwal, Sunny, “Enhancing room temperature ethanol sensing using electrospun Ag-doped SnO2–ZnO nanofibers” Journal of Materials Science: Materials in Electronics, vol. 31, pp. 17212–17224, 2020. doi: https://doi.org/10.1007/s10854-020-04276-9

CONFERENCE PUBLICATIONS:

  • Ajay Beniwal and Chong Li "Disposable and Flexible PEDOT:PSS-based Temperature Sensor for Healthcare Applications," IEEE Applied Sensing Conference (APSCON) 2024, Goa, India, pp. 1-4, 2024.doi: 10.1109/APSCON60364.2024.10465834 (https://ieeexplore.ieee.org/document/10465834)
  • D. K. Neethipathi, Ajay Beniwal, P. Ganguly, A. Bass, M. Scott and Ravinder Dahiya, "Electrochemical Detection of Fe2+ ions in Water using 2-Dimensional g-C3N4 modified Glassy Carbon Electrode-based Sensor," IEEE Applied Sensing Conference (APSCON), Bengaluru, India, 2023, pp. 1-3.
    doi: 10.1109/APSCON56343.2023.10101086
  • X. Karagiorgis, Ajay Beniwal, P. Skabara and R. Dahiya, "Degradable nanofibers-based capacitive pressure sensor for underwater monitoring," IEEE Applied Sensing Conference (APSCON), Bengaluru, India, 2023, pp. 1-3.
    doi: 10.1109/APSCON56343.2023.10101231
  • Ajay Beniwal, Priyanka Ganguly, Deepan K. Neethipathi, and Ravinder Dahiya, “PEDOT:PSS modified Screen Printed Graphene-Carbon Ink based Flexible Humidity Sensor, ” IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS) 2022, Vienna, Austria, 10th - 13th July 2022. (DOI: 10.1109/FLEPS53764.2022.9781534).
  • Priyanka Ganguly, Deepan K. Neethipathi, Ajay Beniwal, and Ravinder Dahiya, “Influence of Thickness of Screen Printed Carbon Electrodes on Electrochemical Sensing,” IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS) 2022, Vienna, Austria, 10-13 Jul 2022. (DOI: 10.1109/fleps53764.2022.9781549).
  • Deepan K. Neethipathi, Priyanka Ganguly, Ajay Beniwal, Marian Scott, Adrian Bass and Ravinder Dahiya, “MoS2 modified screen printed carbon electrode based flexible sensor for detection of Copper,” IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS) 2022, Vienna, Austria, 10-13 Jul 2022. (DOI: 10.1109/FLEPS53764.2022.9781564)
  • Ajay Beniwal, Sunny, “UV Treated Sol-gel Synthesized SnO2-Polypyrrole Sensor for Ultra-low Ammonia Detection at RT,” IEEE SENSORS 2019, (18th IEEE Conference on Sensors), Montreal, Canada, 27-30 October, 2019. DOI: 10.1109/SENSORS43011.2019.8956656
  • Ajay Beniwal, Sunny, “Surfactant Modified Spin Coated NiO Sensor for Low Concentration Ethanol Detection,” IEEE SENSORS 2019, (18th IEEE Conference on Sensors), Montreal, Canada, 27-30 October, 2019. DOI: 10.1109/SENSORS43011.2019.8956887
  • Ajay Beniwal, Praven K. Sahu and Sunny, “Enhanced Sensing Performance of Nanostructured SnO2 Sensor through Oxygen Plasma Treatment,” IEEE SENSORS 2018, (17th IEEE Conference on Sensors), New Delhi, India, 28-31 October, 2018, New Delhi, India. DOI: 10.1109/ICSENS.2018.8589714
  • Ajay Beniwal, Suraj Lalwani and Sunny, “Ag doped SnO2 sensor for ethanol with high sensitivity at room temperature,” AIP Conference Proceedings, vol. 2009, pp. (020039)1-4, (2018), 15-17 March, 2018, AMN-2018, Noida India. https://doi.org/10.1063/1.5052108
  • Utkarsh Nirbhay, Ajay Beniwal, Suraj Lalwani and Sunny, “Highly selective room temperature operated ammonia sensor synthesized using electrospun yttrium doped SnO2 nanofibers” IEEE NANO 2021 (21st International Conference on Nanotechnology, 28 – 30 July 2021, Montreal, Canada. DOI: 10.1109/NANO51122.2021.9514344

Teaching

Flexible and Printed Electronics

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