Gulshan Kumar Verma
@iitj.ac.in
Scopus Publications
- Functional quantum dots: advances and emerging directions for enhanced sensing applications
Gulshan Verma, Ankur Gupta
Nanotechnology, 2026
In recent decades, significant progress has been made in the development of quantum dots (QDs) as sensing materials in advanced sensor technology. This review discusses the brief history, significance, and advancements of QD-based gas sensors. Additionally, it emphasizes the integration of artificial intelligence (AI) and nanotechnology to enhance sensing performance. These advancements have resulted in improved selectivity, sensitivity, and overall performance. However, challenges such as reproducibility and environmental stability persist, requiring further investigation. Emerging innovations are actively addressing these limitations that aims for the wider implementation of QD-based gas sensors. Given their transformative potential, these materials could play a crucial role in industrial safety, medical diagnostics, and environmental monitoring. - Next-Generation Chemiresistive Wearable Breath Sensors for Non-Invasive Healthcare Monitoring: Advances in Composite and Hybrid Materials
Gulshan Verma, Ankur Gupta
Small, 2025
Recently wearable breath sensors have received significant attention in personalized healthcare systems by offering new methods for remote, non‐invasive, and continuous monitoring of various health indicators from breath samples without disrupting daily routines. The rising demand for rapid, personalized diagnostics has sparked concerns over electronic waste from short‐lived silicon‐based devices. To address this issue, the development of flexible and wearable sensors for breath sensing applications is a promising approach. Research highlights the development of different flexible, wearable sensors operating with different operating principles, such as chemiresistive sensors to detect specific target analytes due to their simple design, high sensitivity, selectivity, and reliability. Further, focusing on the non‐invasive detection of biomarkers through exhaled breath, chemiresistive wearable sensors offer a comprehensive and environmentally friendly solution. This article presents a comprehensive discussion of the recent advancement in chemiresistive wearable breath sensors for the non‐invasive detection of breath biomarkers. The article further emphasizes the intricate development and functioning of the sensor, including the selection criteria for both the flexible substrate and advanced functional materials, including their sensing mechanisms. The review then explores the potential applications of wearable gas sensing systems with specific disease detection, with modern challenges associated with non‐invasive breath sensors. - Room temperature operated flexible MWCNTs/Nb2O5 hybrid breath sensor for the non-invasive detection of an exhaled diabetes biomarker
Gulshan Verma, Sonu Sarraf, Aviru K. Basu, Pranay Ranjan, Ankur Gupta
Journal of Materials Chemistry B, 2025
Flexible gas/breath sensors have emerged as a transformative solution in personalized healthcare, offering innovative approaches for remote, non-invasive, and continuous monitoring of health indicators from breath samples. - ZnO nanowire-decorated 3D printed pyrolytic carbon for solar light–driven photocatalytic degradation of wastewater contaminants
Gulshan Verma, Monsur Islam, Ankur Gupta
Advanced Composites and Hybrid Materials, 2025 - Hierarchical MoS2 Nanostructured Tubes on Biodegradable and Flexible Chitosan-Based Platform for Low-Temperature Hydrogen Detection
Gulshan Verma, Prashanth Venkatesan, Suraj Barala, Mahesh Kumar, Naresh Kumar Dega, Ankur Gupta
IEEE Sensors Journal, 2025
The importance of flexible gas sensors is increasingly recognized for their adaptability across various applications. However, the commonly used flexible substrates are synthetic and nonbiodegradable, contributing to environmental pollution. To mitigate this issue, there is a growing focus on developing low cost, environmentally friendly flexible substrates for electronic devices. In this study, we present an efficient approach aimed at fabricating a cost-effective flexible chitosan platform embedded with molybdenum disulfide (MoS2) nanostructured tubes synthesized via a hydrothermal method. This flexible platform, combined with MoS2, underwent meticulous morphological characterization and comprehensive evaluation for detecting hydrogen (H2) gas at <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$50~^{\circ }$ </tex-math></inline-formula> C. The device at <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$50~^{\circ }$ </tex-math></inline-formula> C exhibited a 300% higher response by proportion for 50-ppm H2 compared to those operating at room temperature (RT), demonstrating its enhanced performance at lower temperatures. Furthermore, the sensor also demonstrated excellent repeatability and bendability characteristics, along with a notable selectivity toward H2 over other gases, such as H2S, NH3, and NO2, achieving a low limit of detection (LOD) of ~28 ppb. In a nutshell, these findings emphasize sustainable and biodegradable sensors with good sensitivity, repeatability, and selectivity, for detecting H2, particularly at a lower temperature. - Flexible hybrid nanostructured chemiresistive sensing platform for low-temperature trace hydrogen detection
Gulshan Verma, Hind Kadiri, Anisha Gokarna, Sumit Kumar, Mahesh Kumar, Gilles Lerondel, Ankur Gupta
Sensors and Actuators B Chemical, 2025 - Low cost fabrication of continuous flow optofluidic microreactor for efficient dye degradation using graphene QDs@MOF (Ti) photocatalyst
Gulshan Verma, Prashanth Venkatesan, Deblina Roy, Parthivi Aloni, Naresh Kumar Dega, Ankur Gupta
Environmental Research, 2024 - Flexible ZnO nanowire platform by metal-seeded chemical bath deposition: Parametric analysis and predictive modeling
Gulshan Verma, Anisha Gokarna, Hind Kadiri, Gilles Lerondel, Ankur Gupta
Applied Materials Today, 2024 - Enhanced Performance of Laser-Induced Graphene Supercapacitors via Integration with Candle-Soot Nanoparticles
Arnab Ghosh, Sukhman Kaur, Gulshan Verma, Christian Dolle, Raheleh Azmi, Stefan Heissler, Yolita M. Eggeler, Kunal Mondal, Dario Mager, Ankur Gupta, Jan G. Korvink, De-Yi Wang, Ashutosh Sharma, Monsur Islam
ACS Applied Materials and Interfaces, 2024
Laser-induced graphene (LIG) has been emerging as a promising electrode material for supercapacitors due to its cost-effective and straightforward fabrication approach. However, LIG-based supercapacitors still face challenges with limited capacitance and stability. To overcome these limitations, in this work, we present a novel, cost-effective, and facile fabrication approach by integrating LIG materials with candle-soot nanoparticles. The composite electrode is fabricated by laser irradiation on a Kapton sheet to generate LIG material, followed by spray-coating with candle-soot nanoparticles and annealing. Materials characterization reveals that the annealing process enables a robust connection between the nanoparticles and the LIG materials and enhances nanoparticle graphitization. The prepared supercapacitor yields a maximum specific capacitance of 15.1 mF/cm2 at 0.1 mA/cm2, with a maximum energy density of 2.1 μWh/cm2 and a power density of 50 μW/cm2. Notably, the synergistic activity of candle soot and LIG surpasses the performances of previously reported LIG-based supercapacitors. Furthermore, the cyclic stability of the device demonstrates excellent capacitance retention of 80% and Coulombic efficiency of 100% over 10000 cycles. - Nature inspired Ficus Religiosa leaf mesh coated with antibacterial ZnO/PANi@PMMA nanocomposite for separation and water purification
Gulshan Verma, Saloni Singhal, Ankur Gupta
Catalysis Communications, 2023
In this article, we fabricate a nature inspired Ficus religiosa leaf mesh with a micro/nano hierarchical structure utilizing the ZnO/PANi@PMMA nanocomposite having exceptional hydrophobic and oleophilic characteristics, with a water contact angle of ~130° and an oil contact angle of ~2°, respectively. Different oil/water mixtures were subsequently separated using the mesh, and after 8 cycles, the separation efficiency was ~96.86 ± 0.8% for gasoline. In contrast, the reported mesh carries antibacterial properties and has successfully degraded the methylene orange (MO) dye solution in 140 min with ~91% efficiency in the presence of sunlight, envisioning its potential use in water purification applications. - TiS2 Nanoparticle-Anchored Candle-Soot Decorated Carbon Nanofiber-Based Hydrophobic/Oleophilic Membrane for Oil/Water Separation
Gulshan Verma, Monsur Islam, Ankur Gupta
ACS Es and T Water, 2023 - Multiplexed Gas Sensor: Fabrication Strategies, Recent Progress, and Challenges
Gulshan Verma, Anisha Gokarna, Hind Kadiri, Komla Nomenyo, Gilles Lerondel, Ankur Gupta
ACS Sensors, 2023 - Room temperature operated flexible La-ZnO/MWCNTs sensor for ppb level carbon monoxide detection
Gulshan Verma, Vikas Pandey, Monsur Islam, Mahesh Kumar, Ankur Gupta
Journal of Micromechanics and Microengineering, 2023 - A simple approach to develop a paper-based biosensor for real-time uric acid detection
Gulshan Verma, Saloni Singhal, Prince Kumar Rai, Ankur Gupta
Analytical Methods, 2023 - Nanostructured Gas Sensors: Fundamentals, Devices, and Applications
Ankur Gupta, Gulshan Verma
Nanostructured Gas Sensors Fundamentals Devices and Applications, 2023 - Integrated electrochemical and photocatalytic degradation using ZnO caterpillars photocatalyst: Two-step approach for textile industry based wastewater recovery
Gulshan Verma, Prince Kumar Rai, Jan Gerrit Korvink, Monsur Islam, Ankur Gupta
Materials Science and Engineering B, 2022 - Preparation of Electrospun Porous Alumina Nanofibers for Origami-Inspired Manufacturing
Yu Ni, Ankur Gupta, Gulshan Verma, Sparsh Gupta, Peter G. Weidler, Dario Mager, Jan G. Korvink, Monsur Islam
Advanced Engineering Materials, 2022 - Real-time degradation of methylene blue using bio-inspired superhydrophobic PDMS tube coated with Ta-ZnO composite
Gulshan Verma, Monsur Islam, Ankur Gupta
Chemical Engineering Journal Advances, 2022 - Sensing performance of room temperature operated MEMS gas sensor for ppb level detection of hydrogen sulfide: a review
Gulshan Verma, Ankur Gupta
Journal of Micromechanics and Microengineering, 2022 - Superhydrophobic ZnO-Au nanocomposite over polydimethylsiloxane tubes for efficient photocatalytic dye degradation
Gulshan Verma, Ankur Gupta
Applied Nanoscience Switzerland, 2022 - Recent trends of silicon elastomer-based nanocomposites and their sensing applications
Gulshan Verma, Nikhil Sheshkar, Chandan Pandey, Ankur Gupta
Journal of Polymer Research, 2022 - Si-based MEMS resonant sensor: A review from microfabrication perspective
Gulshan Verma, Kunal Mondal, Ankur Gupta
Microelectronics Journal, 2021 - Highly sensitive, ambient temperature CO sensor using tin oxide based composites
Vinay Kishnani, Gulshan Verma, Rohit K. Pippara, Anshul Yadav, Pankaj Singh Chauhan, Ankur Gupta
Sensors and Actuators A Physical, 2021 - Enhanced thermal and mechanical properties of hydrophobic graphite-embedded polydimethylsiloxane composite
Nikhil Sheshkar, Gulshan Verma, Chandan Pandey, Atul Kumar Sharma, Ankur Gupta
Journal of Polymer Research, 2021 - Design and simulation of piezoresistive polymer accelerometer
Gulshan Kumar Verma, Mohd. Zahid Ansari
Iop Conference Series Materials Science and Engineering, 2019
RECENT SCHOLAR PUBLICATIONS
- Multi-material 3D Printed Pyrolytic Carbon–Polyaniline Scaffold for Room-Temperature Nitrogen Dioxide Detection
G Verma, M Islam, CD Gandhi, P Sappidi, A Gupta
ACS Applied Engineering Materials , 2026
2026 - Scalable fabrication of micro/nanostructured polymeric functional platforms via advanced lithography techniques
G Verma, H Kadiri, A Gokarna, K Nomenyo, G Lerondel, A Gupta
Discover Electronics 3 (7) , 2026
2026
Citations: 1 - Functional quantum dots: advances and emerging directions for enhanced sensing applications
G Verma, A Gupta
Nanotechnology 37 (1), 012002 , 2026
2026
Citations: 4 - Hierarchical MoS2 Nanostructured Tubes on Biodegradable and Flexible Chitosan Based Platform for Low Temperature Hydrogen Detection
G Verma, P Venkatesan, B S., M Kumar, N Dega, A Gupta
IEEE Sensors , 2025
2025
Citations: 4 - Room Temperature Operated Flexible MWCNTs/Nb2O5 Hybrid Breath Sensor for the Non-Invasive Detection of Exhaled Diabetes Biomarker
G Verma, S Sarraf, A Basu, P Ranjan, A Gupta
Journal of Materials Chemistry B , 2025
2025
Citations: 9 - Next‐Generation Chemiresistive Wearable Breath Sensors for Non‐Invasive Healthcare Monitoring: Advances in Composite and Hybrid Materials
G Verma, A Gupta
Small 21 (13), 2411495 , 2025
2025
Citations: 49 - ZnO nanowire-decorated 3D printed pyrolytic carbon for solar light–driven photocatalytic degradation of wastewater contaminants
G Verma, M Islam, A Gupta
Advanced Composites and Hybrid Materials 8 (109) , 2025
2025
Citations: 25 - Flexible hybrid nanostructured chemiresistive sensing platform for low-temperature trace hydrogen detection
G Verma, H Kadiri, A Gokarna, S Kumar, M Kumar, G Lerondel, A Gupta
Sensors and Actuators B: Chemical 422, 136621 , 2025
2025
Citations: 17 - Low cost fabrication of continuous flow optofluidic microreactor for efficient dye degradation using graphene QDs@ MOF (Ti) photocatalyst
G Verma, P Venkatesan, D Roy, P Aloni, NK Dega, A Gupta
Environmental Research 263, 120207 , 2024
2024
Citations: 7 - Flexible ZnO nanowire platform by metal-seeded chemical bath deposition: parametric analysis and predictive modeling
G Verma, A Gokarna, H Kadiri, G Lerondel, A Gupta
Applied Materials Today 40, 102385 , 2024
2024
Citations: 11 - Enhanced performance of laser-induced graphene supercapacitors via integration with candle-soot nanoparticles
A Ghosh, S Kaur, G Verma, C Dolle, R Azmi, S Heissler, YM Eggeler, ...
ACS Applied Materials & Interfaces 16 (31), 40313-40325 , 2024
2024
Citations: 28 - Recent advances in advanced micro and nanomanufacturing for wastewater purification
G Verma, K Mondal, M Islam, A Gupta
ACS Applied Engineering Materials 2 (2), 262-285 , 2024
2024
Citations: 41 - Nature inspired Ficus Religiosa leaf mesh coated with antibacterial ZnO/PANi@ PMMA nanocomposite for separation and water purification
G Verma, S Singhal, A Gupta
Catalysis Communications 185, 106806 , 2023
2023
Citations: 8 - TiS 2 Nanoparticle-Anchored Candle-Soot Decorated Carbon Nanofiber-Based Hydrophobic/Oleophilic Membrane for Oil/Water Separation
G Verma, M Islam, A Gupta
ACS ES&T Water 3 (11), 3687-3695 , 2023
2023
Citations: 14 - Room temperature operated flexible La-ZnO/MWCNTs sensor for ppb level carbon monoxide detection
G Verma, V Pandey, M Islam, M Kumar, A Gupta
Journal of Micromechanics and Microengineering 33 (9), 095003 , 2023
2023
Citations: 21 - Multiplexed gas sensor: fabrication strategies, recent progress, and challenges
G Verma, A Gokarna, H Kadiri, K Nomenyo, G Lerondel, A Gupta
ACS sensors 8 (9), 3320-3337 , 2023
2023
Citations: 75 - Nanostructured gas sensors: fundamentals, devices, and applications
A Gupta, G Verma
Jenny Stanford Publishing , 2023
2023
Citations: 12 - A simple approach to develop a paper-based biosensor for real-time uric acid detection
G Verma, S Singhal, PK Rai, A Gupta
Analytical Methods 15 (24), 2955-2963 , 2023
2023
Citations: 14 - Integrated electrochemical and photocatalytic degradation using ZnO caterpillars photocatalyst: Two-step approach for textile industry based wastewater recovery
G Verma, PK Rai, JG Korvink, M Islam, A Gupta
Materials Science and Engineering: B 286, 116078 , 2022
2022
Citations: 17 - One-Dimensional Nanostructures for Gas Sensing Applications
G Verma, A Gupta
Gas Sensors, 169-184 , 2022
2022
Citations: 1
MOST CITED SCHOLAR PUBLICATIONS
- Si-based MEMS resonant sensor: A review from microfabrication perspective
G Verma, K Mondal, A Gupta
Microelectronics Journal 118, 105210 , 2021
2021
Citations: 96 - Multiplexed gas sensor: fabrication strategies, recent progress, and challenges
G Verma, A Gokarna, H Kadiri, K Nomenyo, G Lerondel, A Gupta
ACS sensors 8 (9), 3320-3337 , 2023
2023
Citations: 75 - Highly sensitive, ambient temperature CO sensor using tin oxide based composites
V Kishnani, G Verma, RK Pippara, A Yadav, PS Chauhan, A Gupta
Sensors and Actuators A: Physical 332, 113111 , 2021
2021
Citations: 70 - Enhanced thermal and mechanical properties of hydrophobic graphite-embedded polydimethylsiloxane composite
N Sheshkar, G Verma, C Pandey, AK Sharma, A Gupta
Journal of Polymer Research 28 (11), 403 , 2021
2021
Citations: 55 - Next‐Generation Chemiresistive Wearable Breath Sensors for Non‐Invasive Healthcare Monitoring: Advances in Composite and Hybrid Materials
G Verma, A Gupta
Small 21 (13), 2411495 , 2025
2025
Citations: 49 - Recent development in carbon nanotubes based gas sensors
G Verma, A Gupta
Materials NanoScience 9 (1), 3-12 , 2022
2022
Citations: 47 - Recent advances in advanced micro and nanomanufacturing for wastewater purification
G Verma, K Mondal, M Islam, A Gupta
ACS Applied Engineering Materials 2 (2), 262-285 , 2024
2024
Citations: 41 - Recent trends of silicon elastomer-based nanocomposites and their sensing applications
G Verma, N Sheshkar, C Pandey, A Gupta
Journal of Polymer Research 29 (5), 195 , 2022
2022
Citations: 34 - Enhanced performance of laser-induced graphene supercapacitors via integration with candle-soot nanoparticles
A Ghosh, S Kaur, G Verma, C Dolle, R Azmi, S Heissler, YM Eggeler, ...
ACS Applied Materials & Interfaces 16 (31), 40313-40325 , 2024
2024
Citations: 28 - Sensing performance of room temperature operated MEMS gas sensor for ppb level detection of hydrogen sulfide: a review
G Verma, A Gupta
Journal of Micromechanics and Microengineering 32 (9), 094002 , 2022
2022
Citations: 28 - ZnO nanowire-decorated 3D printed pyrolytic carbon for solar light–driven photocatalytic degradation of wastewater contaminants
G Verma, M Islam, A Gupta
Advanced Composites and Hybrid Materials 8 (109) , 2025
2025
Citations: 25 - Superhydrophobic ZnO-Au nanocomposite over polydimethylsiloxane tubes for efficient photocatalytic dye degradation
G Verma, A Gupta
Applied Nanoscience 12 (7), 2091-2102 , 2022
2022
Citations: 25 - Design and simulation of piezoresistive polymer accelerometer
GK Verma, MZ Ansari
IOP Conference Series: Materials Science and Engineering 561 (1), 012128 , 2019
2019
Citations: 22 - Room temperature operated flexible La-ZnO/MWCNTs sensor for ppb level carbon monoxide detection
G Verma, V Pandey, M Islam, M Kumar, A Gupta
Journal of Micromechanics and Microengineering 33 (9), 095003 , 2023
2023
Citations: 21 - Flexible hybrid nanostructured chemiresistive sensing platform for low-temperature trace hydrogen detection
G Verma, H Kadiri, A Gokarna, S Kumar, M Kumar, G Lerondel, A Gupta
Sensors and Actuators B: Chemical 422, 136621 , 2025
2025
Citations: 17 - Integrated electrochemical and photocatalytic degradation using ZnO caterpillars photocatalyst: Two-step approach for textile industry based wastewater recovery
G Verma, PK Rai, JG Korvink, M Islam, A Gupta
Materials Science and Engineering: B 286, 116078 , 2022
2022
Citations: 17 - TiS 2 Nanoparticle-Anchored Candle-Soot Decorated Carbon Nanofiber-Based Hydrophobic/Oleophilic Membrane for Oil/Water Separation
G Verma, M Islam, A Gupta
ACS ES&T Water 3 (11), 3687-3695 , 2023
2023
Citations: 14 - A simple approach to develop a paper-based biosensor for real-time uric acid detection
G Verma, S Singhal, PK Rai, A Gupta
Analytical Methods 15 (24), 2955-2963 , 2023
2023
Citations: 14 - Real-time degradation of methylene blue using bio-inspired superhydrophobic PDMS tube coated with Ta-ZnO composite
G Verma, M Islam, A Gupta
Chemical Engineering Journal Advances 12, 100423 , 2022
2022
Citations: 13 - Nanostructured gas sensors: fundamentals, devices, and applications
A Gupta, G Verma
Jenny Stanford Publishing , 2023
2023
Citations: 12
