Ajay Beniwal

@ucl.ac.uk

Research Fellow
University College London

Ajay Beniwal
Research and mentoring is an integral part of my career profile which is one of the main reasons for me to pursue a career in academia. The art of research and mentoring as well as learning from your own experience is unique itself. My enthusiasm for research areas such as flexible and printable electronics for healthcare and digital agricultural applications, smart sensing technologies with wireless connectivity, sensor materials and nanocomposites, sustainable and green electronics inspired my drive to pursue a PhD/Post-doctoral and to contribute within several research outcomes/projects. I believe that academic career is a truly rewarding career path for me so far, which has motivated me to work with prominent academics within innovative and exciting research projects, supporting and receiving support from my PhD and Post-doctoral colleagues, presenting and getting feedback in world-leading conferences, and presently being part of a multidisciplinary research group at University Col

EDUCATION

Doctor of Philosophy (PhD)

RESEARCH, TEACHING, or OTHER INTERESTS

Electrical and Electronic Engineering, Surfaces, Coatings and Films, Multidisciplinary, Materials Science
39

Scopus Publications

641

Scholar Citations

13

Scholar h-index

15

Scholar i10-index

Scopus Publications

  • Graphene/PEDOT:PSS Hybrid Ink Based Flexible and Eco-friendly Humidity Sensor for Early Plant Leaf Stress Monitoring
    Ajay Beniwal, Temitope Odedeyi, Izzat Darwazeh
    IEEE Sensors Letters, 2026
    In this work, we present a flexible and eco-friendly humidity sensor suitable for early plant leaf stress monitoring. The humidity sensor was fabricated using graphene/PEDOT:PSS hybrid ink deposited via drop-casting method on interdigitated electrodes (IDEs) screen printed on a eco-friendly paper substrate. Contact angle measurement, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) studies were performed to demonstrate hydrophilic nature, surface morphology and elemental analysis, respectively, of the sensing layer. The sensor exhibited excellent sensing performance in the measured relative humidity (%RH) range from 25% RH to 94% RH having a maximum % response of 226.5%. The sensor demonstrated a nearly linear response (adj. R² = 0.99) in the considered range with a slope observed as 3.21%/%RH. Multi-cyclic repeatability and reproducibility analysis further confirmed high reliability and consistent performance of the developed sensor. Furthermore, the capability of the sensor was successfully evaluated through capturing variations in plant physiological health status (under different environmental conditions, such as un-watered, water availability and solar irradiation) via monitoring microclimatic relative humidity (%RH) variations on plant (<italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Epiremnun aureum</i>) leaves. Through establishing the %RH values for healthy crops or plants under normal (well-watered) and stress conditions (un-watered or excessive solar irradiations), sensor seems to demonstrate strong potential for smart agriculture i.e., detecting early plant leaf stress.
  • Sustainable, Flexible, and Ambient Temperature Operated Polyaniline-Based Chemiresistive Ammonia Sensor With Eco-Friendly Design
    Ajay Beniwal, Rahul Gond, Xenofon Karagiorgis, Brajesh Rawat, Chong Li
    IEEE Sensors Letters, 2026
    In this work, an eco-friendly, flexible and ambient temperature (∼27°C ± 2°C) operated ammonia (NH<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub>) sensor has been developed using electrospun polyaniline (PANI) fibers deposited on an eco-friendly paper substrate having printed graphene-carbon (G-C) interdigitated electrodes (IDEs). The sensor was designed to detect ammonia (NH₃) over a broad concentration range of 0.5 to 500 ppm, targeting applications in environmental and healthcare monitoring. Structural, elemental and morphological properties of the sensing layer were characterized using X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX) and scanning electron microscopy (SEM), confirming the formation of well-aligned PANI fibers with entangled networks and rougher surface. The sensor exhibited excellent % response (1261% at 500 ppm), reproducibility and good repeatability over multiple cycles. Selectivity studies showed a multifold % response towards ammonia gas as compared to interfering gases such as CO<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub>, CO, SO<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub>, and NO<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub>. The use of paper as a low-cost, eco-friendly substrate, combined with the scalable fabrication route, highlights the potential of this work for sustainable and disposable ammonia sensing platforms and environmentally-friendly sensing solutions.
  • Disposable and Highly Sensitive Humidity Sensor Based on PEDOT:PSS/GO Heterostructure
    Prajjwal Shukla, Rahul Gond, Ajay Beniwal, Chong Li, Brajesh Rawat
    IEEE Journal on Flexible Electronics, 2025
    This work reports a flexible and disposable high-performance humidity sensor using the poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) and graphene oxide (GO) heterostructure. The fabrication of the sensor is done using a cost-effective and large-scale production methodology, which involves the screen-printing process for electrodes and spin-coating for sensing layer depositions. Contrary to the PEDOT:PSS, the heterostructure sensor exhibits enhanced humidity sensing performance with high response and quicker response time. At room temperature (RT), the sensor exhibits excellent sensitivity of around 3.953%/RH over a detection range from 10% to 60% RH. The device also possesses excellent repeatability, long-term stability, and robustness against temperature variations. These findings suggest that PEDOT:PSS/GO heterostructure holds great potential as an effective sensing material for high-performance humidity sensor development for agriculture, medical, and industrial applications.
  • Room-Temperature-Operated Fe2O3/PANI-Based Flexible and Eco-Friendly Ammonia Sensor With Sub-ppm Detectability
    Ajay Beniwal, Rahul Gond, Xenofon Karagiorgis, Brajesh Rawat, Chong Li
    IEEE Sensors Letters, 2025
    In this letter, a room temperature (RT) (∼27 °C) operated ferric oxide/polyaniline (Fe2O3/PANI) composite-based flexible ammonia sensor with substantial sensing performance is reported. Initially, interdigitated electrodes were screen printed (using graphene-carbon-based ink) on a bio-degradable paper substrate. Further, PANI nanofibers were electrospun on printed IDEs, followed by drop casting a layer of Fe2O3. X-ray diffraction and Fourier transform infrared spectroscopy studies were performed to confirm the composite formation, followed by scanning electron microscopy analysis to examine the sensing surface morphology. The ammonia sensing performance was examined within the range of 0.5 ppm (i.e., 500 ppb) to 50 ppm, with a 1.99% response achieved even at 0.5 ppm. The response/recovery times were noted as 950/250 s toward 0.5 ppm of ammonia. In addition, selectivity toward interference gases including carbon dioxide, nitrogen dioxide, carbon monoxide, and sulfur dioxide was also investigated. The proposed sensing mechanism of the composite material toward ammonia gas detection is also presented.
  • Additive Strategies to Mitigate Humidity Interference Effects on PEDOT:PSS Sensors for Ammonia Detection
    Ajay Beniwal, Priyanka Ganguly, Gaurav Khandelwal, Rahul Gond, Brajesh Rawat, Chong Li
    IEEE Sensors Journal, 2025
    Development of precise and accurate ammonia sensors suitable for healthcare (point-of-care devices) and environmental monitoring is imperative and absolute necessity. However, a persistent challenge in the gas sensor technology is sensitivity degradation due to humidity interference. To address this challenge, this study presents a screen-printed, flexible, and disposable sensor based on poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) mixed with additives having reduced humidity interference tailored for ammonia (NH3) gas detection. Polar solvents such as ethylene glycol (EG), dimethylformamide (DMF), and dimethyl sulfoxide (DMSO) are used as additives with the base material PEDOT:PSS. Enhanced hydrophobicity is confirmed via contact angle measurements. Current-voltage (I–V) characteristic assessments reveal a linear ohmic behavior, emphasizing the heightened conductivity of the samples with additives compared to the PEDOT:PSS sensor. When assessing the humidity response, the DMF-modified PEDOT:PSS sensor exhibited minimal % response, registering only 37.01% at 90% humidity. This was a marked improvement over the pristine PEDOT:PSS sensor, which recorded 118.5% at the same humidity level, and outperformed other additive variants. Regarding ammonia detection, the PEDOT:PSS/DMF sensor demonstrated an experimental detection ability up to 0.1 ppm with 0.91% response and outperformed the ammonia sensing ability of pristine PEDOT:PSS. Effect of relative humidity (~5%RH–80%RH) on ammonia gas sensing performance of PEDOT:PSS/DMF sensor is also conducted and compared with pristine PEDOT:PSS. The increment in sensor conductivity with rising ammonia concentrations is theorized due to the charge transfer, where ammonia’s lone pair of electrons interacts with the covalent backbone of PEDOT:PSS, suggesting a plausible sensing mechanism.
  • Secure and intelligent data-driven technique with IPv6 in Internet of Things applications
    Arun Kumar Rana, Sumit Kumar Rana, Ritu Dewan, Amit Kesherwani, Ajay Beniwal, Shikha Singh
    Intelligent Data Driven Techniques for Security of Digital Assets, 2025
    Everyone knows that certain security flaws in the way Internet of Things (IoT) networks are currently set up have nothing to do with exposing private information to unauthorized users. People are aware of this information. LLNs, or low power and lossy networks, are currently regarded as one of the most exciting areas of research. They use wireless personal area networks (WPANs), wireless sensor networks (WSNs), and low power line communication (PLC) systems. These kinds of systems are frequently modified for energy-saving purposes, to accommodate non-typical unicast correspondence track designs, to run steering conventions over connection layers with constrained edge sizes, and for a host of other purposes. One new technology that is developing quickly is the Internet of Things. The term “Internet of Things” describes a network architecture where different electronic devices are networked together over the internet and have the ability to be controlled remotely. Routing Protocol for Low-Power and Lossy Networks (RPL) is a protocol used by the Internet of Things. RPL is a simple convention with strong guiding utility, environmental awareness, and support for dynamic topology. It also provides important security benefits. In this study, we examine the safe, secure, and power-efficient RPL IPv6 routing protocol. We also suggest the Caesar Cypher hash algorithm, which uses a powerful tool to ensure the security, privacy, and trustworthiness of data stored on Internet of Things nodes. CCSS is the proprietary built-in security solution of CONTIKI COOJA SIMULATOR. Some terms to search for are Internet of Things, RPL, IPv6, low-power and lossy networks, and Contiki Cooja.
  • Polydimethylsiloxane Foam-Based Fully 3D Printed Soft Pressure Sensors
    Xenofon Karagiorgis, Gaurav Khandelwal, Ajay Beniwal, Radu Chirila, Peter J. Skabara, Ravinder Dahiya
    Advanced Intelligent Systems, 2024
    Highly sensitive pressure sensors, with a wide operating range, are needed in applications such as wearables, prostheses, and haptic‐based interactive systems. Herein, fully 3D printed capacitive pressure sensors comprising polydimethylsiloxane (PDMS) foam‐based dielectric layer, sandwiched between the poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate and silver nanowire‐based electrodes, are presented. The printed electrodes exhibit excellent electrical properties (1.6 Ω sq−1, 20.35 kS m−1) and bendability. Various ratios of PDMS to ammonium bicarbonate (NH4HCO3) are evaluated to obtain dielectric layer with optimum pore sizes for better performance and ease of fabrication. The device with a PDMS:NH4HCO3 ratio of 4:0.8 exhibits a linear response with a sensitivity of 0.0055 kPa−1 in the tested pressure range of 5–170 kPa. The fully 3D printed sensors also show excellent repeatability over 500 cycles with an average hysteresis of 1.53%, and fast response and recovery times of 89 and 195 ms, respectively. The superiority of the presented 3D printed foam‐based device is confirmed by 30% higher sensitivity in comparison with PDMS‐based sensors. Finally, as a proof‐of‐concept, the pressure sensors presented in this study are assessed for their suitability in underwater environments and touch‐based object recognition.
  • Eco-Friendly Textile-Based Wearable Humidity Sensor with Multinode Wireless Connectivity for Healthcare Applications
    Ajay Beniwal, Gaurav Khandelwal, Rudra Mukherjee, Daniel M. Mulvihill, Chong Li
    ACS Applied Bio Materials, 2024
    Textile-based wearable humidity sensors are of great interest for human healthcare monitoring as they can provide critical human-physiology information. The demand for wearable and sustainable sensing technology has significantly promoted the development of eco-friendly sensing solutions for potential real-world applications. Herein, a biodegradable cotton (textile)-based wearable humidity sensor has been developed using fabsil-treated cotton fabric coated with a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) sensing layer. The structural, chemical composition, hygroscopicity, and morphological properties are examined using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), contact angle measurement, and scanning electron microscopy (SEM) analysis. The developed sensor exhibited a nearly linear response (Adj. R-square value observed as 0.95035) over a broad relative humidity (RH) range from 25 to 91.5%RH displaying high sensitivity (26.1%/%RH). The sensor shows excellent reproducibility (on replica sensors with a margin of error ±1.98%) and appreciable stability/aging with time (>4.5 months), high flexibility (studied at bending angles 30°, 70°, 120°, and 150°), substantial response/recovery durations (suitable for multiple applications), and highly repeatable (multicyclic analysis) sensing performance. The prospective relevance of the developed humidity sensor toward healthcare applications is demonstrated via breathing rate monitoring (via a sensor attached to a face mask), distinguishing different breathing patterns (normal, deep, and fast), skin moisture monitoring, and neonatal care (diaper wetting). The multinode wireless connectivity is demonstrated using a Raspberry Pi Pico-based system for demonstrating the potential applicability of the developed sensor as a real-time humidity monitoring system for the healthcare sector. Further, the biodegradability analysis of the used textile is evaluated using the soil burial degradation test. The work suggests the potential applicability of the developed flexible and eco-friendly humidity sensor in wearable healthcare devices and other humidity sensing applications.
  • MESSAGE
    Proceedings IEEE 2024 1st International Conference on Advances in Computing Communication and Networking Icac2n 2024, 2024
  • Disposable and Flexible PEDOT:PSS-based Temperature Sensor for Healthcare Applications
    Ajay Beniwal, Chong Li
    Apscon 2024 2024 IEEE Applied Sensing Conference Proceedings, 2024
    Temperature sensors with excellent disposability, biocompatibility, flexibility, and a facile fabrication process are strongly desirable for real-world applications in the realm of wearable healthcare. In this paper, we demonstrate poly(3,4ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)based temperature sensor that has a PEDOT:PSS sensing layer and drop casted on graphene carbon ink based interdigitated electrodes (IDEs), screen printed on a paper substrate. The temperature sensing characteristics were examined in the range of $25^{\\circ}\\mathrm{C}$ to $60^{\\circ}\\mathrm{C}$. The results show that the sensors have a substantial sensitivity of -0.486 %$/^{\\circ}\\mathrm{C}$ in the considered range and exhibit an excellent linear fit with a Adj. R-Square value of 0.96412. Other imperative characteristics like hysteresis analysis (4.08 %), response/recovery time, repeatability (3-cyclic), reproducibility etc. were also studied and discussed. The results show that the sensor is an excellent candidate for temperature sensing in the healthcare sector particularly for monitoring wound healing temperature via smart bandages.
  • Room Temperature Operated PEDOT: PSS Based Flexible and Disposable NO2Gas Sensor
    Ajay Beniwal, Priyanka Ganguly, Rahul Gond, Brajesh Rawat, Chong Li
    IEEE Sensors Letters, 2023
  • MoS Modified Screen Printed Carbon Electrode Based Flexible Electrochemical Sensor for Detection of Copper Ions in Water
    Deepan Kumar Neethipathi, Ajay Beniwal, Adrian M. Bass, Marian Scott, Ravinder Dahiya
    IEEE Sensors Journal, 2023
  • PEDOT:PSS-Based Disposable Humidity Sensor for Skin Moisture Monitoring
    Ajay Beniwal, Dina Anna John, Ravinder Dahiya
    IEEE Sensors Letters, 2023
  • PEDOT:PSS-Coated Screen-Printed Graphene-Carbon Ink-Based Humidity and Temperature Sensor
    Ajay Beniwal, Deepan Kumar Neethipathi, Ravinder Dahiya
    IEEE Journal on Flexible Electronics, 2023
  • V2O5 Nanowires-Coated Yarn-Based Temperature Sensor With Wireless Data Transfer for Smart Textiles
    Gaurav Khandelwal, Abhishek Singh Dahiya, Ajay Beniwal, Ravinder Dahiya
    IEEE Journal on Flexible Electronics, 2023
  • MESSAGE
    Proceedings IEEE 2023 5th International Conference on Advances in Computing Communication Control and Networking Icac3n 2023, 2023
  • PEDOT:PSS based Disposable Humidity Sensor for Skin Moisture Monitoring
    Ajay Beniwal, Ravinder Dahiya
    Apscon 2023 IEEE Applied Sensing Conference Symposium Proceedings, 2023
  • Degradable nanofibers-based capacitive pressure sensor for underwater monitoring
    Xenofon Karagiorgis, Ajay Beniwal, Peter Skabara, Ravinder Dahiya
    Apscon 2023 IEEE Applied Sensing Conference Symposium Proceedings, 2023
  • Screen-printed graphene-carbon ink based disposable humidity sensor with wireless communication
    Ajay Beniwal, Priyanka Ganguly, Akshaya Kumar Aliyana, Gaurav Khandelwal, Ravinder Dahiya
    Sensors and Actuators B Chemical, 2023
  • Electrochemical Detection of Fe2+ ions in Water using 2-Dimensional g-C3N4 modified Glassy Carbon Electrode-based Sensor
    Deepan Kumar Neethipathi, Ajay Beniwal, Priyanka Ganguly, Adrian Bass, Marian Scott, Ravinder Dahiya
    Apscon 2023 IEEE Applied Sensing Conference Symposium Proceedings, 2023
  • Disposable pH Sensor on Paper Using Screen-Printed Graphene-Carbon Ink Modified Zinc Oxide Nanoparticles
    Akshaya Kumar Aliyana, Priyanka Ganguly, Ajay Beniwal, S. K. Naveen Kumar, Ravinder Dahiya
    IEEE Sensors Journal, 2022
  • Influence of Thickness of Screen Printed Carbon Electrodes on Electrochemical Sensing
    Priyanka Ganguly, Deepan Kumar Neethipathi, Ajay Beniwal, Ravinder Dahiya
    Fleps 2022 IEEE International Conference on Flexible and Printable Sensors and Systems Proceedings, 2022
  • PEDOT:PSS modified Screen Printed Graphene-Carbon Ink based Flexible Humidity Sensor
    Ajay Beniwal, Priyanka Ganguly, Deepan Kumar Neethipathi, Ravinder Dahiya
    Fleps 2022 IEEE International Conference on Flexible and Printable Sensors and Systems Proceedings, 2022
  • MoS2modified screen printed carbon electrode based flexible sensor for detection of Copper
    Deepan K. Neethipathi, Priyanka Ganguly, Ajay Beniwal, Marian Scott, Adrian Bass, Ravinder Dahiya
    Fleps 2022 IEEE International Conference on Flexible and Printable Sensors and Systems Proceedings, 2022
  • Room Temperature Operated Electrospun Nanofibers-Based SnO2/PTh Sensor for Acetone Sensing Applications
    Ajay Beniwal, Sunny
    IEEE Transactions on Electron Devices, 2021
  • Highly selective room temperature operated ammonia sensor synthesized using electrospun yttrium doped SnO2nanofibers
    Utkarsh Nirbhay, Ajay Beniwal, Suraj Kumar Lalwani, Sunny
    Proceedings of the IEEE Conference on Nanotechnology, 2021
  • SnO2-ZnO-Fe2O3tri-composite based room temperature operated dual behavior ammonia and ethanol sensor for ppb level detection
    Ajay Beniwal, Sunny
    Nanoscale, 2020
  • Enhancing room temperature ethanol sensing using electrospun Ag-doped SnO2–ZnO nanofibers
    Suraj Kumar Lalwani, Ajay Beniwal, Sunny
    Journal of Materials Science Materials in Electronics, 2020
  • Novel TPU/Fe2O3 and TPU/Fe2O3/PPy nanocomposites synthesized using electrospun nanofibers investigated for analyte sensing applications at room temperature
    Ajay Beniwal, Sunny
    Sensors and Actuators B Chemical, 2020
  • Electrospun SnO2/PPy nanocomposite for ultra-low ammonia concentration detection at room temperature
    Ajay Beniwal, Sunny
    Sensors and Actuators B Chemical, 2019
  • Surfactant Modified Spin Coated NiO Sensor for Low Concentration Ethanol Detection
    Ajay Beniwal, Sunny
    Proceedings of IEEE Sensors, 2019
  • UV Treated Sol-gel Synthesized SnO2-Polypyrrole Sensor for Ultra-low Ammonia Detection at RT
    Ajay Beniwal, Sunny
    Proceedings of IEEE Sensors, 2019
  • Apple fruit quality monitoring at room temperature using sol–gel spin coated Ni–SnO 2 thin film sensor
    Ajay Beniwal, Sunny
    Journal of Food Measurement and Characterization, 2019
  • Highly selective and sensitive O 2 plasma treated sputtered thin film sensor for sub-ppm level NH 3 detection at room temperature
    Ajay Beniwal, Sunny
    Journal of Materials Science Materials in Electronics, 2019
  • Sol-gel assisted nano-structured SnO2 sensor for low concentration ammonia detection at room temperature
    Ajay Beniwal, Vibhu Srivastava, Sunny
    Materials Research Express, 2019
  • Baseline drift improvement through investigating a novel Ag Doped SnO2/ZnO nanocomposite for selective ethanol detection
    Ajay Beniwal, Suraj Kumar, Sunny
    IEEE Transactions on Nanotechnology, 2019
  • Enhanced Sensing Performance of Nanostructured SnO 2 Sensor Through Oxygen Plasma Treatment
    Ajay Beniwal, Praveen Kumar Sahu, Sunny
    Proceedings of IEEE Sensors, 2018
  • Sol–gel spin coating assisted room temperature operated nanostructured ZnO ethanol sensor with behavior transformation
    Ajay Beniwal, Praveen Kumar Sahu, Sunny Sharma
    Journal of Sol Gel Science and Technology, 2018
  • Ag doped SnO2 sensor for ethanol with high sensitivity at room temperature
    Ajay Beniwal, Suraj Lalwani, Sunny
    Aip Conference Proceedings, 2018

RECENT SCHOLAR PUBLICATIONS

  • Sustainable, Flexible and Ambient Temperature Operated Polyaniline-based Chemiresistive Ammonia Sensor with Eco-Friendly Design
    A Beniwal, R Gond, X Karagiorgis, B Rawat, C Li
    IEEE Sensors Letters , 2026
    2026
    Citations: 1
  • Graphene/PEDOT: PSS Hybrid Ink based Flexible and Eco-friendly Humidity Sensor for Early Plant Leaf Stress Monitoring
    A Beniwal, T Odedeyi, I Darwazeh
    IEEE Sensors Letters , 2026
    2026
  • Additive Strategies to Mitigate Humidity Interference Effects on PEDOT: PSS Sensors for Ammonia Detection
    A Beniwal, P Ganguly, G Khandelwal, R Gond, B Rawat, C Li
    IEEE Sensors Journal , 2025
    2025
    Citations: 8
  • Disposable and Highly Sensitive Humidity Sensor based on PEDOT: PSS/GO Heterostructure
    P Shukla, R Gond, A Beniwal, C Li, B Rawat
    IEEE Journal on Flexible Electronics , 2025
    2025
    Citations: 3
  • Room Temperature Operated Fe 2 O 3 /PANI-based Flexible and Eco-friendly Ammonia Sensor with Sub-ppm Detectability
    A Beniwal, R Gond, X Karagiorgis, B Rawat, C Li
    IEEE Sensors Letters , 2025
    2025
    Citations: 4
  • Polydimethylsiloxane Foam‐Based Fully 3D Printed Soft Pressure Sensors
    X Karagiorgis, G Khandelwal, A Beniwal, R Chirila, PJ Skabara, R Dahiya
    Advanced Intelligent Systems 6 (10), 2300367 , 2024
    2024
    Citations: 26
  • Eco-Friendly Textile-Based Wearable Humidity Sensor with Multinode Wireless Connectivity for Healthcare Applications
    A Beniwal, G Khandelwal, R Mukherjee, DM Mulvihill, C Li
    ACS Applied Bio Materials 7 (7), 4772-4784 , 2024
    2024
    Citations: 35
  • Disposable and Flexible PEDOT: PSS-Based Temperature Sensor for Healthcare Applications
    A Beniwal, C Li
    2024
  • Room Temperature Operated PEDOT: PSS Based Flexible and Disposable NO 2 Gas Sensor
    A Beniwal, P Ganguly, R Gond, B Rawat, C Li
    IEEE Sensors Letters 7 (9), 1-4 , 2023
    2023
    Citations: 13
  • MoS₂ Modified Screen Printed Carbon Electrode Based Flexible Electrochemical Sensor for Detection of Copper Ions in Water
    DK Neethipathi, A Beniwal, AM Bass, M Scott, R Dahiya
    IEEE Sensors Journal 23 (8), 8146-8153 , 2023
    2023
    Citations: 21
  • PEDOT: PSS-Based Disposable Humidity Sensor for Skin Moisture Monitoring
    A Beniwal, DA John, R Dahiya
    IEEE Sensors Letters 7 (3), 1-4 , 2023
    2023
    Citations: 34
  • Electrochemical Detection of Fe2+ ions in Water using 2-Dimensional g-C3N4 modified Glassy Carbon Electrode-based Sensor
    DK Neethipathi, A Beniwal, P Ganguly, A Bass, M Scott, R Dahiya
    2023 IEEE Applied Sensing Conference (APSCON), 1-3 , 2023
    2023
    Citations: 4
  • Degradable nanofibers-based capacitive pressure sensor for underwater monitoring
    X Karagiorgis, A Beniwal, P Skabara, R Dahiya
    2023 IEEE Applied Sensing Conference (APSCON), 1-3 , 2023
    2023
    Citations: 1
  • Screen-printed graphene-carbon ink based disposable humidity sensor with wireless communication
    A Beniwal, P Ganguly, AK Aliyana, G Khandelwal, R Dahiya
    Sensors and Actuators B: Chemical 374, 132731 , 2023
    2023
    Citations: 155
  • PEDOT: PSS-Coated Screen-Printed Graphene–Carbon Ink-Based Humidity and Temperature Sensor
    A Beniwal, DK Neethipathi, R Dahiya
    IEEE Journal on Flexible Electronics 2 (2), 111-118 , 2022
    2022
    Citations: 9
  • V 2 O 5 Nanowires-Coated Yarn-Based Temperature Sensor With Wireless Data Transfer for Smart Textiles
    G Khandelwal, AS Dahiya, A Beniwal, R Dahiya
    IEEE Journal on Flexible Electronics 2 (2), 119-126 , 2022
    2022
    Citations: 5
  • Disposable pH sensor on paper using screen-printed graphene-carbon ink modified zinc oxide nanoparticles
    AK Aliyana, P Ganguly, A Beniwal, SKN Kumar, R Dahiya
    IEEE Sensors Journal 22 (21), 21049-21056 , 2022
    2022
    Citations: 33
  • MoS 2 modified screen printed carbon electrode based flexible sensor for detection of Copper
    DK Neethipathi, P Ganguly, A Beniwal, M Scott, A Bass, R Dahiya
    2022 IEEE International Conference on Flexible and Printable Sensors and … , 2022
    2022
    Citations: 4
  • Influence of Thickness of Screen Printed Carbon Electrodes on Electrochemical Sensing
    P Ganguly, DK Neethipathi, A Beniwal, R Dahiya
    2022 IEEE International Conference on Flexible and Printable Sensors and … , 2022
    2022
    Citations: 4
  • PEDOT: PSS modified Screen Printed Graphene-Carbon Ink based Flexible Humidity Sensor
    A Beniwal, P Ganguly, DK Neethipathi, R Dahiya
    2022 IEEE International Conference on Flexible and Printable Sensors and … , 2022
    2022
    Citations: 10

MOST CITED SCHOLAR PUBLICATIONS

  • Screen-printed graphene-carbon ink based disposable humidity sensor with wireless communication
    A Beniwal, P Ganguly, AK Aliyana, G Khandelwal, R Dahiya
    Sensors and Actuators B: Chemical 374, 132731 , 2023
    2023
    Citations: 155
  • Electrospun SnO2/PPy nanocomposite for ultra-low ammonia concentration detection at room temperature
    A Beniwal, Sunny
    Sensors and Actuators B: Chemical 296, 126660 , 2019
    2019
    Citations: 80
  • Novel TPU/Fe2O3 and TPU/Fe2O3/PPy nanocomposites synthesized using electrospun nanofibers investigated for analyte sensing applications at room temperature
    A Beniwal, Sunny
    Sensors and Actuators B: Chemical 304, 127384 , 2020
    2020
    Citations: 42
  • Sol-gel assisted nano-structured SnO2 sensor for low concentration ammonia detection at room temperature
    A Beniwal, V Srivastava, Sunny
    Materials Research Express 6 (4), 046421 , 2019
    2019
    Citations: 39
  • Eco-Friendly Textile-Based Wearable Humidity Sensor with Multinode Wireless Connectivity for Healthcare Applications
    A Beniwal, G Khandelwal, R Mukherjee, DM Mulvihill, C Li
    ACS Applied Bio Materials 7 (7), 4772-4784 , 2024
    2024
    Citations: 35
  • PEDOT: PSS-Based Disposable Humidity Sensor for Skin Moisture Monitoring
    A Beniwal, DA John, R Dahiya
    IEEE Sensors Letters 7 (3), 1-4 , 2023
    2023
    Citations: 34
  • Sol–gel spin coating assisted room temperature operated nanostructured ZnO ethanol sensor with behavior transformation
    A Beniwal, PK Sahu, S Sharma
    Journal of Sol-Gel Science and Technology 88 (2), 322-333 , 2018
    2018
    Citations: 34
  • Disposable pH sensor on paper using screen-printed graphene-carbon ink modified zinc oxide nanoparticles
    AK Aliyana, P Ganguly, A Beniwal, SKN Kumar, R Dahiya
    IEEE Sensors Journal 22 (21), 21049-21056 , 2022
    2022
    Citations: 33
  • Polydimethylsiloxane Foam‐Based Fully 3D Printed Soft Pressure Sensors
    X Karagiorgis, G Khandelwal, A Beniwal, R Chirila, PJ Skabara, R Dahiya
    Advanced Intelligent Systems 6 (10), 2300367 , 2024
    2024
    Citations: 26
  • MoS₂ Modified Screen Printed Carbon Electrode Based Flexible Electrochemical Sensor for Detection of Copper Ions in Water
    DK Neethipathi, A Beniwal, AM Bass, M Scott, R Dahiya
    IEEE Sensors Journal 23 (8), 8146-8153 , 2023
    2023
    Citations: 21
  • Apple fruit quality monitoring at room temperature using sol–gel spin coated Ni–SnO 2 thin film sensor
    A Beniwal, Sunny
    Journal of Food Measurement and Characterization 13 (1), 857-863 , 2019
    2019
    Citations: 17
  • Enhancing room temperature ethanol sensing using electrospun Ag-doped SnO 2–ZnO nanofibers
    SK Lalwani, A Beniwal, Sunny
    Journal of Materials Science: Materials in Electronics 31 (20), 17212-17224 , 2020
    2020
    Citations: 15
  • Room Temperature Operated PEDOT: PSS Based Flexible and Disposable NO 2 Gas Sensor
    A Beniwal, P Ganguly, R Gond, B Rawat, C Li
    IEEE Sensors Letters 7 (9), 1-4 , 2023
    2023
    Citations: 13
  • PEDOT: PSS modified Screen Printed Graphene-Carbon Ink based Flexible Humidity Sensor
    A Beniwal, P Ganguly, DK Neethipathi, R Dahiya
    2022 IEEE International Conference on Flexible and Printable Sensors and … , 2022
    2022
    Citations: 10
  • Baseline Drift Improvement Through Investigating a Novel Ag Doped SnO 2/ZnO Nanocomposite for Selective Ethanol Detection
    A Beniwal, S Kumar, Sunny
    IEEE Transactions on Nanotechnology 18, 412-420 , 2019
    2019
    Citations: 10
  • PEDOT: PSS-Coated Screen-Printed Graphene–Carbon Ink-Based Humidity and Temperature Sensor
    A Beniwal, DK Neethipathi, R Dahiya
    IEEE Journal on Flexible Electronics 2 (2), 111-118 , 2022
    2022
    Citations: 9
  • SnO 2-ZnO-Fe 2 O 3 tri-composite based room temperature operated dual behavior ammonia and ethanol sensor for ppb level detection
    A Beniwal, Sunny
    Nanoscale 12 (38), 19732-19745 , 2020
    2020
    Citations: 9
  • Additive Strategies to Mitigate Humidity Interference Effects on PEDOT: PSS Sensors for Ammonia Detection
    A Beniwal, P Ganguly, G Khandelwal, R Gond, B Rawat, C Li
    IEEE Sensors Journal , 2025
    2025
    Citations: 8
  • Room Temperature Operated Electrospun Nanofibers-Based SnO 2/PTh Sensor for Acetone Sensing Applications
    A Beniwal, Sunny
    IEEE Transactions on Electron Devices 68 (8), 4084-4089 , 2021
    2021
    Citations: 8
  • Highly selective and sensitive O 2 plasma treated sputtered thin film sensor for sub-ppm level NH 3 detection at room temperature
    A Beniwal, Sunny
    Journal of Materials Science: Materials in Electronics 30 (3), 3144-3155 , 2019
    2019
    Citations: 8

CONSULTANCY

Project: DETECT: Disposable Sensor for Continuous Detection of Renal Disease
Role: Principal Investigator (PI)
Funded Value: £203,795
Funder: Horizon Europe Guarantee / UK Research and Innovation
Funded Period: 2 Years
Organisation: University of Glasgow
Department Name: School of Engineering