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Publications

Book Chapters

1. Rahul Kumar, Neeraj Goel, and Mahesh Kumar. " Layered Metal Chalcogenides for Gas Sensors."  Oct. 2021, IOP, pages- 3-1 to 3-40, Book name - Gas Sensors: Materials and Devices, doi.org/10.1088/978-0-7503-3995-7ch3.

2. Neeraj Goel, Rahul Kumar, and Mahesh Kumar. " Heterojunction Based Gas Sensors."  Book name- Gas Sensors: Fundamentals to Devices, Springer (under publishing process)

Journals

1. Rahul Kumar, Neeraj Goel, and Mahesh Kumar. "UV-activated MoS2 based fast and reversible NO2 sensor at room temperature." ACS Sensors 2, no. 11 (2017): 1744-1752 (IF~7.7).

2. Rahul Kumar, Neeraj Goel, Monu Mishra, Govind Gupta, Mattia Fanetti, Matjaz Valant, and Mahesh Kumar. "Growth of MoS2–MoO3 hybrid microflowers via controlled vapor transport process for efficient gas sensing at room temperature." Advanced Materials Interfaces 5, no. 10 (2018): 1800071 (IF~6.1).

3. Rahul Kumar, Neeraj Goel, and Mahesh Kumar. "High performance NO2 sensor using MoS2 nanowires network." Applied Physics Letters 112, no. 5 (2018): 053502 (listed in most viewed and most cited articles on device physics in 2019) (IF~3.79).

4. Rahul Kumar, Neeraj Goel, Ramesh Raliya, Pratim Biswas, and Mahesh Kumar. "High-performance photodetector based on hybrid of MoS2 and reduced graphene oxide." Nanotechnology 29, no. 40 (2018): 404001 (IF~3.8).

5. Rahul Kumar, Neeraj Goel, Abhay Vivek Agrawal, Ramesh Raliya, Saravanan Rajamani, Govind Gupta, Pratim Biswas, Mukesh Kumar and Mahesh Kumar."Boosting Sensing Performance of Vacancy-Containing Vertically Aligned MoS2 using rGO Particles" IEEE Sensors Journal 19 (22) (2019): 10214-10220 (IF~3.3).

6. Rahul Kumar, Neeraj Goel, Ramesh Raliya, Govind Gupta,Pratim Biswas, Jun Zhang and Mahesh Kumar. “Plasmonic Au nanoparticles sensitized MoS2 for bifunctional NO2 and light sensing." IEEE Sensors Journal, 21(4) (2020):4191-4197 (IF~3.3)

7. Rahul Kumar, Pawan K Kulriya, Monu Mishra, Fouran Singh, Govind Gupta, Mahesh Kumar. “Highly selective and reversible NO2 gas sensor using vertically aligned MoS2 flake networks" Nanotechnology 29, no. 46 (2018): 464001(Top cited articles from India during 2018-2020 in entire IOP Publication journals) (IF~3.8).

8. Rahul Kumar, Xianghong Liu, Jun Zhang and Mahesh Kumar. “Room-Temperature Gas Sensors under Photoactivation: From Metal Oxides to 2D Materials." Nano-Micro Letters, 12, 164 (2020) (IF~16.4).

9. Rahul Kumar, Wei Zheng, Xianghong Liu, Jun Zhang and Mahesh Kumar. “2D MoS2-based Nanomaterials for Room-Temperature Gas Sensors." Advanced Materials Technologies 5, 5(2020):1901062 (IF~7.8).

10. Rahul Kumar, Neeraj Goel, Mirabbos Hojamberdiev, and Mahesh Kumar. “Transition Metal Dichalcogenides-Based Flexible Gas Sensors." Sensors and Actuators A: Physical 303, (2020):111875 (IF~3.4).

11. Rahul Kumar and Mahesh Kumar. "Single-atom catalysts boosted ultrathin film sensors. Rare Metals, 39, 10 (2020), 1110-1112 (IF~4.0).

12. Neeraj Goel, Rahul Kumar, Mirabbos Hojamberdiev, and Mahesh Kumar. "Enhanced Carrier Density in a MoS₂/Si Heterojunction-Based Photodetector by Inverse Auger Process." IEEE Transactions on Electron Devices 99 (2018): 1-6 (IF~2.9).

13. Neeraj Goel, Rahul Kumar, Basanta Roul, Mahesh Kumar, and S. B. Krupanidhi. "Wafer-scale synthesis of a uniform film of few-layer MoS2 on GaN for 2D heterojunction ultraviolet photodetector." Journal of Physics D: Applied Physics 51, no. 37 (2018): 374003 (IF~3.2).

14. Surajit Das, Rahul Kumar, Jitendra Singh, and Mahesh Kumar. "Fabrication of micro-sensor for detection of low concentration formaldehyde gas in formalin- treated fish" IEEE Transactions on Electron Devices, 67, 12 (2020): 5710-5716 (IF~2.9).

15. Abhay V Agrawal, Rahul Kumar, Swaminathan Venkatesan, Alex Zakhidov, Guang Yang, Jiming Bao, Mahesh Kumar, Mukesh Kumar." Photoactivated Mixed In-Plane and Edge-Enriched p-Type MoS2 Flake-Based NO2 Sensor Working at Room Temperature." ACS Sensors 3, no. 5 (2018): 998-1004 (Top cited articles from India during 2017-1018 in ACS Sensors) (IF~7.7).

16. Mirabbos Hojamberdiev, Neeraj Goel, Rahul Kumar, Zukhra Ch. Kadirova, and Mahesh Kumar. "Efficient NO2 sensing performance of low-cost nanostructured sensor derived from molybdenite concentrate" Green Chemistry 22, (2020): 6981-6991 (IF~10.18).

17. AV Agrawal, Rahul Kumar, S Venkatesan, A Zakhidov, Z Zhu, Jiming Bao, Mahesh Kumar, Mukesh Kumar. “Fast detection and low power hydrogen sensor using edge-oriented vertically aligned 3-D network of MoS2 flakes at room temperature" Applied Physics Letters 111, no. 9 (2017): 093102 (IF~3.7).

18. Neeraj Goel, Rahul Kumar, Monu Mishra, Govind Gupta, and Mahesh Kumar. "Determination of band alignment at two-dimensional MoS2/Si van der Waals heterojunction." Journal of Applied Physics 123, no. 22 (2018): 225301 (IF~2.5).

19. Abhay Vivek Agrawal, Rahul Kumar, Guang Yang, Jiming Bao, Mahesh Kumar and Mukesh Kumar. “Enhanced adsorption sites in monolayer MoS2 pyramid structures for highly sensitive and fast hydrogen sensor." International Journal of Hydrogen Energy 45, 15 (2020):9268-9277 (IF~5.8).

20. Mohit Kumar, Rahul Kumar, Saravanan Rajamani, Sapana Ranwa, Mattia Fanetti, Matjaz Valant, Mahesh Kumar. "Efficient room temperature hydrogen sensor based on UV-activated ZnO nano-network." Nanotechnology 28, no. 36 (2017): 365502 (IF~3.8).

21. Neeraj Goel, Rahul Kumar, Shubhendra Kumar Jain, Saravanan Rajamani, Govind Gupta, Mahesh Kumar, and S. B. Krupanidhi. "High-performance hydrogen sensor based on reverse-biased MoS2/GaN heterojunction. Nanotechnology (2019), 30 (31), 314001 (IF~3.8).

22. Deepu Kumar, Birender Singh, Rahul Kumar, Mahesh Kumar, Pradeep Kumar. “Anisotropic Electron-Photon-Phonon Coupling in Layered MoS2  Journal of Physics: Condensed Matter 32, 41 (2020):415702 (IF~2.3).

23. Md Tawabur Rahman, Rahul Kumar, Mahesh Kumar, and Qiquan Qiaod. “Two-dimensional transition metal dichalcogenides and their composites for sensing applications: Recent progress and future outlook " Sensors and Actuators A: Physical 318, 112517 (2021) (IF~3.4).

24. Neeraj Goel, Jayanta Bera, Rahul Kumar, Satyajit Sahu and Mahesh Kumar. “MoS2-PVP Nanocomposites Decorated ZnO Microsheets for Efficient Hydrogen Detection." IEEE Sensors Journal, 21, 7 (2021): 8878-8885 (IF~3.3)

25. Deepu Kumar, Birender Singh, Rahul Kumar, Mahesh Kumar, Pradeep Kumar. “Davydov Splitting, Resonance Effect and Phonon Dynamics in Chemical Vapor Deposition Grown Layered MoS2” Nanotechnology 32, 28 (2021):258705 (IF~3.8).

26. Neeraj Goel, Rahul Kumar, and Mahesh Kumar. “Visualization of band offsets at few-layer MoS2/Ge heterojunction." Nanotechnology 32,(2021): 375711 (IF~3.8).

27. Xianghong Liu, Wei Zheng, Rahul Kumar, Mahesh Kumar, and Jun Zhang. “Conducting polymer-based nanostructures for gas sensors." Coordination Chemistry Reviews, 462,(2022): 214517 (IF~22.31).

28. Deepu Kumar, Rahul Kumar, Mahesh Kumar, and Pradeep Kumar. “Coupled excitonic quasiparticle-electron–phonon and interlayer coupling in vertically and horizontally aligned MoS2." Journal of Materials Chemistry C, 10,(2022): 5684-5692 (IF~7.3).

29. Deepu Kumar, Vivek Kumar, Rahul Kumar, Mahesh Kumar, Pradeep Kumar. “Electron-phonon coupling, thermal expansion coefficient, resonance effect, and phonon dynamics in high-quality CVD-grown monolayer and bilayer MoSe2." Physical Review B, 105,(2022): 085419 (IF~4.03).

30. Neha Sakhuja, Rahul Kumar, Prateek Katare, and Navakanta Bhat, Structure- Driven, Flexible, Multilayered, Paper-Based Pressure Sensors for Human Machine Interfacing, ACS Sustainable Chemistry & Engineering, 10 (2022): 9697–9706. (IF~9.2).

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Proceeding

1. Rahul Kumar, Neeraj Goel and Mahesh Kumar “NO2 Sensing at Room Temperature Using Vertically Aligned MoS2 Flakes Network” AIP Conference Proceedings 1942, no 1 (2017):060006

2. Rahul Kumar, Neeraj Goel, Ramesh Raliya, Pratim Biswas and Mahesh Kumar “High-performance Ultraviolet Detector Employing out-of-plane rGO/MoS2 PN Heterostructure” IEEE Conference Proceedings, IEEE ICEE 2018, Bangalore, December 17-19 2018.

3. Rahul Kumar, Neeraj Goel, and Mahesh Kumar “Ultraviolet photodetector based on chemical vapor deposition grown MoO3 microplates” IEEE Conference Proceedings, IEEE IEMECON 2019, Jaipur, March 13-15 2019

4. Rahul Kumar, Neeraj Goel, and Mahesh Kumar “Growth of the different microstructure of MoS2 through controlled processing parameters of chemical vapor deposition method” IEEE Conference Proceedings, IEEE I2CT 2019, Pune, March 29-31 2019

5. Neeraj Goel, Rahul Kumar, and Mahesh Kumar “Enhanced sensing response with complete recovery of MoS2 sensor under photoexcitation” AIP Conference Proceedings 1942, no 1 (2017):050060

6. Neeraj Goel, Rahul Kumar, and Mahesh Kumar “Scalable Growth of High-Quality MoS2 Film by Magnetron Sputtering: Application for NO2 Gas Sensing” IEEE Conference Proceedings, IEEE I2CT 2019, Pune, March 29-31 2019

7. Neeraj Goel, Rahul Kumar, and Mahesh Kumar “Growth of Large-Scale α‐MoO3 on SiO2 and Its Uses for Efficient Hydrogen Sensing Application” IEEE Conference Proceedings, IEEE I2CT 2019, Pune, March 29-31 2019.

Conference and workshops

1. Rahul Kumar and Mahesh Kumar “Enhanced NO2 Sensing Performance of Vertically Aligned MoS2 via a Synergistic Vacancy and Interface Engineering” PSCES 2019, IIT Delhi, March 6-8 2019.

2. Rahul Kumar and Mahesh Kumar “NO2 gas sensor based on CVD grown 2D MoS2" Symposium on 2D Materials and Devices 2019, IIT Jodhpur, Sept 27-28 2019.

3. Neeraj Goel, Rahul Kumar, and Mahesh Kumar “ Detection of NO2 gas molecules physio-adsorbed on large area MoSe2 surface" 5th International Conference on Emerging Electronics (ICEE 2020), IIT Delhi, Nov.  26-28 2020.

4. Deepu Kumar, Rahul Kumar, Mahesh Kumar, and Pradeep Kumar “ Anomalous phonons in vertically

and horizontally aligned MoS

" 65th DAE SSPS 2021, DAE Convention Centre, Mumbai, December 15-19, 2021.

5. Deepu Kumar, Rahul Kumar, Mahesh Kumar, and Pradeep Kumar “ Anisotropic Electron-Phonon Coupling in Horizontal and Vertically grown MoS2" 5th International Conference on Emerging Electronics PSCES 2019, IIT Delhi, March 6-8 2019.

6. Surajit Das, Rahul Kumar, and Mahesh Kumar “ Growth of wafer-scale 2D WS2 by vapor transport process for Advanced electronics device applications" Symposium on 2D Materials and Devices 2019, IIT Jodhpur, Sept 27-28 2019.

7. Participated in INUP Hands-on training workshop on “Nanofabrication Technologies” held at IIT Bombay form 20-24 February 2017.

8. Attended a “Summer School on Advanced Lithography and Device Fabrication: From Basics to Contemporary Methods” held on 25 June – 2 July 2019 at IIT Mandi sponsored by MHRD, DST Govt. of India and SCL-Mohali.

9. Attended a “School on Characterizations of Materials” held on 4-9 September 2017 at Inter-University Accelerator Centre New Delhi sponsored by Department of Science and Technology, Govt. of India.

10. Participated in DST-UKIERI workshop on “Emerging Sensor Technologies and Data Analytics for Air Quality Monitoring” held at IIT Delhi on 1 November 2018 sponsored by Department of Science and Technology, Govt. of India

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