Faculty Publications

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Author: search.filters.author.Samanta, S.

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    Security-aware software development life Cycle (SaSDLC) - Processes and tools
    (2009) Talukder, A.K.; Maurya, V.K.; Babu G, S.; Jangam, J.; Muni Sekhar, M.; Jevitha, K.P.; Samanta, S.; Pais, A.R.
    Today an application is secured using invitro perimeter security. This is the reason for security being considered as nonfunctional requirement in Software Development Life Cycle (SDLC). In Next Generation Internet (NGI), where all applications will be networked, security needs to be in-vivo; security must be functions within the application. Applications running on any device, be it on a mobile or on a fixed platform - need to be security-aware using Securityaware Software Development Life Cycle (SaSDLC), which is the focus of this paper. We also present a tool called Suraksha that comprises of Security Designers' Workbench and Security Testers' Workbench thathelps a developer to build Security-aware applications. ©2009 IEEE.
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    A Low Temperature Chemiresistive Hydrogen Sensor Based on Pd: Iron Pthalocyanine (FePc) Thin Films
    (Springer Science and Business Media Deutschland GmbH, 2025) Datta, N.; Raj, A.; Ganapathi, K.; Samanta, S.; Kaur, M.
    Energy transition is advancing rapidly, with hydrogen (H2) gas emerging as a leading clean fuel. Various stakeholders are engaged in building H2-compatible infrastructure for production, storage, and transport. Due to H2 gas explosive nature, reliable systems are essential for safe operations. In this context, our group has already developed a Hydrogen Sensor Device (0.5% to LEL working at 150 °C) based on Pd thin film working on Pellister sensing principle. As a step forward, we have investigated Pd modified FePc thin films as low temperature H2 sensor device based on chemiresistive sensing principle. The films were prepared by thermal evaporation of FePc at 200 °C (80 nm, β phase) substrate temperature followed by sputter deposition of Pd film (10 nm). The Pd: FePc films exhibited room temperature (RT) sensing (lowest detection limit of 0.3% H2) with best sensing characteristics at 100 °C (sensitivity 1.4 times for 2% H2 with a response time of 200 s). The sensing behavior may be attributed to the catalytic behavior of Pd in facilitation of oxygen adsorption on low coordinated Fe atoms in FePc. The same is inferred using Kelvin probe studies on pure and Pd modified FePc films. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.
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    Exploring MIL-101 (Cr) and Its Polymeric Composites as Potential Adsorbents for Volatile Iodine from Nuclear Off-gas: A Detailed Experimental and Computational Study
    (American Chemical Society, 2025) Kolay, S.; Kancharlapalli, S.; Samanta, S.; Muhiuddin, M.; Jha, P.; Pagare, A.; Mishra, R.
    Owing to the rapid growth of nuclear energy as a sustainable, affordable, and clean energy source, the entrapment of radioactive iodine released from the nuclear off-gas stream is considered a vital concern. We view MOFs as potential futuristic adsorbents for this remedy. Herein, we examined the gravimetric iodine adsorption characteristics of radiation and chemically stable MIL-101(Cr) and its polymeric composites with variation of temperatures. The saturation adsorption capacity shown by pristine MIL-101(Cr) is 4.1 g I2 g-1, and the saturation capacity of composites varies based on MIL-101(Cr)’s concentrations. MIL-101(Cr)@PES 2:1 shows an uptake capacity of 2.1 g I2 /gbead, which is ? 350% superior to the reported HKUST-1@PES and ?150% higher compared to MOF-808@PVDF0.7. Based on various spectroscopic studies and DFT calculations, probable host-guest interactions leading to enhanced I2 adsorption have been elucidated. The open Cr metal site acts as the initial adsorption site for I2 that gets converted into iodide and afterward to higher polyiodide through the transfer of charge from the host matrix. These findings suggest that MIL-101(Cr) can be considered one of the potential alternate adsorbents for radioactive iodine. © 2025 American Chemical Society.