A5055706178- ZnO doping and properties
- Ga2O3 and related materials
- Magnetic and transport properties of perovskites and related materials
- Gas Sensing Nanomaterials and Sensors
- Lipid Membrane Structure and Behavior
- Advanced Condensed Matter Physics
- Multiferroics and related materials
- 2D Materials and Applications
- Spectroscopy and Quantum Chemical Studies
- GaN-based semiconductor devices and materials
- Electronic and Structural Properties of Oxides
- Robotics and Sensor-Based Localization
- Ferroelectric and Piezoelectric Materials
- Graphene research and applications
- Advanced Photocatalysis Techniques
- Molecular Junctions and Nanostructures
- Copper-based nanomaterials and applications
- MXene and MAX Phase Materials
- Robotic Path Planning Algorithms
- Protein Interaction Studies and Fluorescence Analysis
- Photochemistry and Electron Transfer Studies
- Gold and Silver Nanoparticles Synthesis and Applications
- Rare-earth and actinide compounds
- Organic Electronics and Photovoltaics
- Porphyrin and Phthalocyanine Chemistry
Academy of Scientific and Innovative Research
2016-2025
Central Glass and Ceramic Research Institute
2007-2025
Saha Institute of Nuclear Physics
2017-2022
Homi Bhabha National Institute
2019-2022
Jadavpur University
2022
Council of Scientific and Industrial Research
2014-2020
CSIR National Physical Laboratory of India
2011-2019
Pandit Deendayal Petroleum University
2019
Bose Institute
2017
Bhabha Atomic Research Centre
1990-2017
A simplistic design of a self-powered UV-photodetector device based on hybrid reduced-graphene-oxide (r-GO)/gallium nitride (GaN) is demonstrated. Under zero bias, the fabricated photodetector shows photosensivity ∼85% while ohmic contact GaN with an identical structure exhibits only ∼5.3% at 350 nm illumination (18 μW/cm2). The responsivity and detectivity were found to be 1.54 mA/W 1.45 × 1010 Jones (cm Hz½ W−1), respectively, bias fast response (60 ms), recovery time (267 excellent...
Herein, we report the aggregation behavior of catanionic mixtures anionic surfactant sodium dodecyl sulfate (SDS) and cationic cetyltrimethylammonium bromide (CTAB) in solution at air/water interface obtained by Langmuir–Blodgett (LB) technique. We employed Fourier transform infrared spectroscopy, situ phase-contrast inverted microscopy, scanning electron atomic force microscopy to characterize systems solution, interface, LB films. found spherical vesicles SDS/CTAB ratio 35/65 aqueous an...
We present the photoelectrochemical (PEC) water-splitting properties of pristine and reduced graphene oxide (rGO)-coated GaN nanocolumns (NCs) on flexible niobium (Nb) metal foils. The structural, optical, electronic structure analyses rGO-coated GaN-NCs Nb foils revealed formation a rGO/GaN-NCs hybrid structure. Further, valence-band studies pure shows maxima at ∼3.0 eV below Fermi level, which decreased to ∼2.8 for rGO/GaN-NCs. PEC measurement performed under standard (1 Sun) conditions an...
To achieve advanced functionalities in nanostructured MoSe2 for enhanced electrochemical charge storage and improved photosensing, here we propose an effective strategy, i.e., the substitutional doping of heteroatom Mn. We a 313% increase specific capacitance 6.2% Mn compared to pristine at scan rate 5 mV/s three-electrode configuration. For two-electrode arrangement, also superior charge-storage performance is noted. The electrode can be attributed electrical conductivity arising due...
Abstract Compact optical detectors with fast binary photoswitching over a broad range of wavelength are essential as an interconnect for any light‐based parallel, real‐time computing. Despite the tremendous technological advancements yet there is no such single device available that meets specifications. Here multifunctional self‐powered high‐speed ultrabroadband (250–1650 nm) photodetector reported based on graphitic carbon‐nitride (g‐C 3 N 4 )/Si hybrid 2D/3D structure. The shows novel...
Recent trends in 2D materials like graphene are focused on heteroatom doping a hexagonal honeycomb lattice to tailor the desired properties for various lightweight atomic thin-layer derived portable devices, particularly field of gas sensors. To design such sensors, it is important either discover new with enhanced or existing via doping. Herein, we exploit concept codoping heteroatoms more improvements sensing and demonstrate boron- nitrogen-codoped bilayer graphene-derived sensor nitrogen...
A method is presented for the generation of a free gait straight-line motion quadruped walking machine. It uses heuristic graph search procedure based on A* algorithm. The essentially looks into consequences move to certain depth before actually committing it. Deadlocks and inefficiencies are thus sensed well in advance avoided.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Interaction of native ovalbumin (OVA) with 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) Langmuir-Blodgett monolayer has been studied at the air-water interface. A compressibility study shows positive association DPPC. Adsorption kinetics that protein adsorption is a one-step process and amount adsorbed depends on concentration water subphase. Incorporation into DPPC layer surface-pressure dependent. The indicates DPPC-OVA interaction hydrophobic in nature structural reorganization...
Zinc oxide (ZnO) one-dimensional nanostructures are extensively used in ultra-violet (UV) detection. To improve the optical sensing capability of ZnO, various nickel (NiO) based p–n junctions have been employed. ZnO/NiO heterojunction has limited to UV detection and not extended visible region. In present work, p-NiO/n-ZnO composite nanowire (NW) UV-visible photodetector is fabricated. A porous anodic aluminum template electrochemical deposition method adopted for well separated vertically...