Dr. Nirmal Ch Roy

Assistant Professor
Department of Electronics & Communication Engineering
Motilal Nehru National Institute of Technology Allahabad, Prayagraj, India-211004
E-mail: nirmalroy[at]mnnit[dot]ac[dot]in
Telephone: NA(O)

Research Publications

Patents:: Nirmal Roy, Shirsendu Mitra, Dipankar Bandyopadhyay, Harshal B. Nemade, Tapas K. Mandal, "Point-of-care detection of ethanol in human breath and other analytes", Indian Patent Office, 446162, 21/08/2023 (Granted); Rupam Sinha, Nirmal Roy, Tapas K. Mandal, "Paper based flexible and self-powered UV photodetector", Indian Patent Office, 202031051178, 24/11/2020 (Published)
Journals:: Nirmal Roy, Abhinav Gupta, Sanjeev Rai, "Analytical surface potential modeling and simulation of junction-less double gate (JLDG) MOSFET for ultra low-power analog/RF circuits", Microelectronics Journal, 46 (10), 916-922, 2015. DOI: 10.1016/j.mejo.2015.07.009 (IF: 1.992); Nirmal Roy, Shirsendu Mitra, Nayan Mani Das, Nilanjan Mandal, Dipankar Bandyopadhyay, Harshal B. Nemade, Tapas K. Mandal, "Paper based enzymatic chemiresistor for POC detection of ethanol in human breath", IEEE Sensors Journal, 20 (5), 2278-2286, 2020. DOI:10.1109/JSEN.2019.2952940 (IF: 4.325); Shirsendu Mitra, Nirmal Roy, Surjendu Maity, Dipankar Bandyopadhyay, "Multimodal chemo-/magneto-/phototaxis of 3G CNT-bots to power fuel cells", Microsystems & Nanoengineering, 6 (19), 1-12, 2020. DOI: 10.1038/s41378019-0122-x (IF: 8.006); Rupam Sinha, Nirmal Roy, Tapas K. Mandal, "Growth of carbon dot-decorated ZnO nanorods on a graphite-coated paper substrate to fabricate a flexible and self-powered Schottky diode for UV detection", ACS Applied Materials & Interfaces, 12 (29), 33428-33438, 2020. DOI:10.1021/acsami.0c10484 (IF: 10.383); Nirmal Roy, Rupam Sinha, Thomas T. Daniel, Harshal B. Nemade, Tapas K. Mandal, "Highly sensitive room temperature CO gas sensor based on MWCNT-PDDA composite", IEEE Sensors Journal, 20 (22), 13245-13252, 2020. DOI: 10.1109/JSEN.2020.3004994 (IF: 4.325); Rupam Sinha, Nirmal Roy, Ravula Rajasekhar, Aabhas Karnawat, Tapas K. Mandal, "N-doped carbon dot from cigarette-tobacco: Picric acid sensing in real water sample and synthesis of CD-MWCNT nano-composite for UV-photodetection", Journal of Environmental Chemical Engineering, 9 (1), 104971, 2021. DOI: 10.1016/j.jece.2020. (IF: 7.968); Nirmal Roy, Shirsendu Mitra, Harshal B. Nemade, Tapas K. Mandal, "Non-enzymatic urea sensing based on MWCNT nanocomposite", IEEE Sensors Journal, 21 (17), 18417-18424, 2021. DOI: 10.1109/JSEN.2021.3088752 (IF: 4.325); Rupam Sinha, Nirmal Roy, Tapas K. Mandal, "SWCNT/ZnO nanocomposite decorated with carbon dots for photoresponsive supercapacitor applications", Chemical Engineering Journal, 431, 133915, 2022. DOI: 10.1016/j.cej.2021.133915 (IF: 16.744); Nirmal Roy, Rupam Sinha, Harshal B. Nemade, Tapas K. Mandal, "Synthesis of MoS2-CuO nanocomposite for room temperature acetone gas sensing application", Journal of Alloys and Compounds, 910, 164891, 2022. DOI:10.1016/j.jallcom.2022 (IF: 6.371); Rupam Sinha, Nirmal Roy, Tapas K. Mandal, "N-doped carbon dots and ZnO conglomerated electrodes for optically responsive supercapacitor applications", Langmuir, 39 (12), 4518-4529, 2023. DOI:10.1021/acs.langmuir.3c00300 (IF: 4.331); Nirmal Roy, "Design and performance evaluation of MoS2 photodetector in vertical MSM configuration", Optical Materials, 148, 114817, 2024. DOI:10.1016/j.optmat.2023.114817 (IF: 3.9)
Conference Proceedings:: Nirmal Roy, "Synthesis of surface modified carbon nanotube composite for environmental pollutant sensing application", 7th International Conference on Advanced Nanomaterial and Nanotechnology (ICANN-2021), IIT Guwahati, India, 2021; Nirmal Roy, Rupam Sinha, Tapas K. Mandal, "PDDA functionalized MWCNT composite as room temperature CO sensor", International Conference on Advances in Sustainable Research for Energy and Environmental Management (ASREEM-2021), SVNIT Surat, India, 2021; Rupam Sinha, Nirmal Roy, Tapas K. Mandal, "Paper based flexible and self-powered UV photodetector", International Conference on Advances in Sustainable Research for Energy and Environmental Management (ASREEM-2021), SVNIT Surat, India, 2021; Nirmal Roy, "Paper based sensor for alcohol detection and its application as breath analyzer", International Conference on Advances in Chemical Engineering-2020 (AdChE-2020), UPES Dehradun, India, 2020; Nirmal Roy, "A disposable chemiresistive sensor based on Multiwall carbon nanotubes for alcohol detection", 6th International Conference on Advanced Nanomaterial and Nanotechnology (ICANN-2019), IIT Guwahati, India, 2019; Shirsendu Mitra, Nirmal Roy, and Dipankar Bandyopadhyay, "Gold nanoparticle embedded modified MWCNT electrodes for electrochemical detection of arsenic in water", ECS Meeting Abstracts, MA2019-02, 2229, 2019. DOI: 10.1149/MA2019-02/51/2229; Nirmal Roy, "Surface modification of Multiwall carbon nanotubes and its applications on alcohol detection", National Conference on Advanced Nanomaterials and their Applications (ANA-2018), MNNIT Allahabad, India, 2018; Nirmal Roy, Shirsendu Mitra, Tapas K. Mandal, "Multiwall carbon nanotube based chemi-resistive sensor for urea detection", 12th International Conference on Complex Fluids and Soft Matter (COMPFLU -2018), IIT Roorkee, India, 2018; Nirmal Roy, "MWCNT, AuNP nanocomposite based POCT sensor for quantitative detection of urea in biological samples", Research Conclave 2018, IIT Guwahati, India, 2018; Nirmal Roy, "Computational performance evaluation of a probe coupled U-type waveguide rotary joint designed in X-band", National Conference on Advances in Electronics & Communication Technology (AECT-2013), SRMS College of Engineering & Technology, Bareilly, India, 2013