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Fullerene- MoSe2 nanocomposite-based sensor for selective detection of formaldehyde

Hazra, Arnab (IEEE, 2023)

Selective detection of volatile organic compound is crucial for medical applications. Here, we have synthesized fullerene (C 60 )-MoSe2(F-MoSe2) composite for selective detection of formaldehyde at room temperature. MoSe2 ...

Highly selective formaldehyde sensing using ZnO nano-rods

Choudhary, Sumita; Hazra, Arnab; Gangopadhyay, Subhashis (AIP, 2023-03)

Early detection of formaldehyde emission from any household materials is technologically very demanding as it can be a serious human health hazard. Even indirect inhaling of formaldehyde may cause significant harm to our ...

Room-Temperature Au/TiO2Nanorods/Ti TFT Butanone Sensor: Role of Surface States

Hazra, Arnab (Springer, 2023-03)

A one-dimensional TiO2 nanorod-based thin film transistor (TFT) for butanone sensing is presented here. A low-cost hydrothermal process was used to deposit TiO2 nanorods on a Si/SiO2 substrate. X-ray diffraction, field-emission ...

GO/p-TiO2 hybrid channel based depletion-mode field-effect transistors with On/Off ratio higher than 103 at room temperature

Hazra, Arnab (Springer, 2023-09)

The graphene field-effect transistor (GFET) has the severe drawback of the device turn off owing to the zero band gap of graphene that results in a limited on/off current ratio at room temperature. In this report, we propose ...

Highly Reproducible and Reliable Methanol Sensor Based on Hydrothermally Grown TiO2 Nanoparticles

Hazra, Arnab (IEEE, 2023-10)

In the present paper, TiO2 nanoparticles were synthesized through low cost hydrothermal method at 150°C. Structural, morphological and optical properties of the grown materials were characterized through X-ray diffraction ...

Hybridized Graphene Field-Effect Transistors for Gas Sensing Applications

Hazra, Arnab (Wiley, 2023-09)

The extraordinary properties of graphene and its derivatives from chemical, physical, electronic, and mechanical perspectives have sparked great interest in a variety of applications. The two-dimensional (2D) nature, high ...

Feature extractions from transfer characteristics of hybrid GO FETs for selective detection of volatile organic compounds

Hazra, Arnab (Elsevier, 2023-11)

The current work concerns a new strategy for selective classifications of multiple volatile organic compounds (VOCs) by using an array of field effect transistor (FET) type sensors and extraction of device-specific features ...

Oxygen-functionalized MoSe2 nanoflowers for selective detection of xylene at room temperature

Hazra, Arnab (Elsevier, 2023-12)

The selective detection of xylene among its chemically similar counter VOCs is very crucial, and challenging and has great implications in breath analysis. At this point, we are introducing MoSe2 nanoflowers, which are ...

A Graph Convolutional Network for Visual Categorization

Bera, Asish; Hazra, Arnab (Springer, 2024-10)

The Convolutional Neural Networks (CNNs) have attained enhanced performance over conventional feature descriptors for image classification. Recently, Graph Convolutional Networks (GCNs) have also been witnessed in achieving ...

Surface energy and stress driven growth of extremely long and high-density ZnO nanowires using a thermal step-oxidation process

Panda, Sri Aurobindo; Choudhary, Sumita; Hazra, Arnab; Gangopadhyay, Subhashis (RSC, 2024-09)

Formation of highly crystalline zinc oxide (ZnO) nanowires with an extremely high aspect ratio (length = 60 μm, diameter = 50 nm) is routinely achieved by introducing an intermediate step-oxidation method during the thermal ...

A MoS2 quantum dot functionalized TiO2 nanotube array for selective detection of xylene at low temperature

Hazra, Arnab (RSC, 2024-10)

Xylene is among the most complex volatile organic compounds (VOCs) and is significant in many applications. Xylene as an efficient breath marker of lung cancer raises the concern of discrimination between compounds having ...

Hybridized Graphene Oxide FETs with Amplified Gas Sensitivity

Hazra, Arnab (IEEE, 2024)

The current study concerns a new approach to achieve amplified gas sensitivity in hybrid graphene oxide (GO) based field effect transistors (FET) sensors. Chemically synthesized TiO 2 nanoparticles, WO 3 nanoflowers and ...

SrTiO3 passivated MXene (Ti3C2Tx) for efficient VOC detection in hazardous humid ambient

Hazra, Arnab (Elsevier, 2024-02)

Humidity interference is a crucial consideration in gas sensing technology for real-time applications. MXenes are new-age two-dimensional (2D) materials with unique properties making them promising candidates for gas ...

Resolving the polycistronic aftermath: Essential role of topoisomerase IA in preventing R-loops in Leishmania

Hazra, Arnab (Elsevier, 2024-04)

Kinetoplastid parasites are “living bridges” in the evolution from prokaryotes to higher eukaryotes. The near-intronless genome of the kinetoplastid Leishmania exhibits polycistronic transcription which can facilitate ...

Surface trapping induced negative photoconductivity in Au nanoparticles functionalized SnO2/SnSe2 nanosheets under visible and NIR light

Hazra, Arnab (Elsevier, 2024-05)

In this study, we report negative photoconductivity in SnO2/SnSe2 nanosheets. We synthesized 2D n-type SnSe2 nanosheets by the hydrothermal route and observed highly stable and repeatable negative photoconductivity (NPC) ...

Synthesis and characterization of hybrid NiO/CeO2 p-n heterojunction nanofibers for room temperature ammonia sensing application

Hazra, Arnab (Elsevier, 2024-08)

The development of room temperature chemiresistive NH3 gas sensors with superior selectivity and stability is always an uphill task to solve. This work describes the synthesis and characterization of NiO/CeO2 p-n heterojunction ...

Feature Extraction From Impedance Spectrum of Au/ZrO2 Nanotube/Zr-Based MIM Sensor for Selective Discrimination of VOCs: A Potential Approach for E-Nose Application

Hazra, Arnab (IEEE, 2024-07)

This report proposes a new method to extract features from the impedance spectrum of zirconium oxide (ZrO2) nanotube-based single sensor to detect and distinguish multiple volatile organic compounds (VOCs). The process of ...

Exploring an N-Type Conducting Polymer (BBL) as a Potential Gas Sensing Material for NH3 and H2S Detection: A Theoretical Study

Hazra, Arnab (2024)

Conducting polymers (CPs) have garnered significant interest in being used as an active material in gas sensors mainly because of their structural flexibility, ease of synthesis, and enhanced performance at room temperature. ...

Transformation of MoSe2 to MoSe2-xOy via controlled oxidation for high-performance resistive switching

Hazra, Arnab (Elsevier, 2024)

The current study shows an improvised resistive switching in oxygenated MoSe2 (MoSe2-xOy) thin film. 2D nanosheets assembled nanoflower morphology of MoSe2 was synthesized with hydrothermal route and then treated with ...

Design & Analysis of Performance-efficient Comparator for IoT Application

Shekhar, Chandra; Gupta, Anu (IEEE, 2022)

The regenerative latch comparator prototype for high-speed up to 1 Giga Hertz analog-to-digital conversion is shown in this article. Cascading structure of different modules makes the proposed comparator a suitable choice ...

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