A5080109209- Gas Sensing Nanomaterials and Sensors
- Analytical Chemistry and Sensors
- ZnO doping and properties
- Advanced Chemical Sensor Technologies
- Transition Metal Oxide Nanomaterials
- Advanced Sensor and Energy Harvesting Materials
- Graphene research and applications
- Conducting polymers and applications
- Advanced Memory and Neural Computing
- Membrane Separation Technologies
- Ferroelectric and Piezoelectric Materials
- Electromagnetic wave absorption materials
- Acoustic Wave Resonator Technologies
- Innovative Energy Harvesting Technologies
- Advanced Antenna and Metasurface Technologies
- Advanced Thermoelectric Materials and Devices
- Electrochemical Analysis and Applications
- Analytical Chemistry and Chromatography
- Dielectric materials and actuators
- Copper-based nanomaterials and applications
- Electrochemical sensors and biosensors
- Plant responses to elevated CO2
- Graphene and Nanomaterials Applications
- Water Quality and Pollution Assessment
- Thermal Radiation and Cooling Technologies
University of Delhi
2010-2024
CuO nanoparticles on sputtered SnO2 thin-film surface exhibit a fast response speed (14 s) and recovery time (61 for trace level (20 ppm) H2S gas detection. The sensitivity of the sensor (S∼2.06×103) is noted to be high at low operating temperature 130 °C. allow effective removal excess adsorbed oxygen from uncovered due spillover hydrogen dissociated H2S–CuO interaction.
H 2 S gas interaction mechanisms of sputtered SnO2 and SnO2–CuO bilayer sensors with a varying distribution the Cu catalyst on are studied using Pt interdigital electrodes within sensing film. Sensitivity to H2S is investigated in range 20–1200 ppm. Changes induced surface, interface, internal bulk region film upon exposure have been analyzed explain increasing sensitivity three different SnO2, SnO2–CuO, CuO islands. covered 0.6 mm diameter ultrathin (∼10 nm) dots found exhibit high 7.3×103...
Abstract An electrochemical sensing platform for the detection of paracetamol is proposed in this work. The sensor (Asp‐MWCNTs/IL/ITO) based on Indium Tin Oxide (ITO) electrode loaded with asparagine functionalised Multi Walled Carbon Nanotubes (MWCNTs) and Ionic Liquid (IL). Initially, in‐silico studies were performed to check favourable interaction drug nanocomposite. potential energy surface Asp‐MWCNTs complexes explored using density functional theory single‐point coupled cluster...
Abstract Graphene based 2D materials with a surfeit of active sites and advantageously high surface to volume ratio are effectively linked well established nanostructured semiconducting metal oxides for development nanocomposites enhanced gas sensing properties. Oxide (GO), sister material graphene, is therefore natural choice room temperature operated sensors. In the current investigation hydrothermally grown GO ZnO nanorods composite (GO–ZnO–NR) utilised H 2 SO gases. Room detection at...
In this paper, nanostructured tungsten oxide (WO3) thin films are deposited using the RF-magnetron sputtering technique in Glancing Angle (GLAD) arrangement. Variation structural, morphological, optical, and resistive switching (RS) characteristics of WO3 film is investigated as a function GLAD angle (60°–80°). Electrical studies on at room temperature found to exhibit enhanced bipolar resistive-switching properties metal–insulator–metal pattern [Au/WO3/ITO]. The RON/ROFF ratio between high...
H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> S gas-sensing properties of a novel SnO -CuO structure consisting ultrathin (∼10 nm) CuO dotted islands (600 μm diameter) on 120-nm thick, sputtered film are compared with pure and bilayer sensor. The -CuO-dotted sensor exhibited high sensitivity 7.3×10 <sup xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> at low operating temperature 150°C. A fast response time 14 s for 20 ppm gas...