A5101722309- Elasticity and Material Modeling
- Solid-state spectroscopy and crystallography
- Topological Materials and Phenomena
- Composite Material Mechanics
- Chemical Thermodynamics and Molecular Structure
- Inorganic Fluorides and Related Compounds
- Chalcogenide Semiconductor Thin Films
- Advanced Materials and Mechanics
- Contact Mechanics and Variational Inequalities
- Graphene research and applications
- 2D Materials and Applications
- Metal Forming Simulation Techniques
- Adhesion, Friction, and Surface Interactions
- Thermal and Kinetic Analysis
- Molecular Spectroscopy and Structure
- Perovskite Materials and Applications
- Luminescence Properties of Advanced Materials
- Advanced Thermoelectric Materials and Devices
- Optical properties and cooling technologies in crystalline materials
- Physics of Superconductivity and Magnetism
- Nonlocal and gradient elasticity in micro/nano structures
- Geotechnical Engineering and Soil Mechanics
- Terahertz technology and applications
- Photonic Crystals and Applications
- Synthesis and characterization of novel inorganic/organometallic compounds
CSIR National Physical Laboratory of India
2021-2023
Academy of Scientific and Innovative Research
2020-2023
Council of Scientific and Industrial Research
2020-2023
Indian Institute of Technology Kanpur
2016-2023
National Institute of Technology Agartala
2018-2020
Chaudhary Charan Singh University
1972-1989
The Abdus Salam International Centre for Theoretical Physics (ICTP)
1988
WTe2 is one of the wonder layered materials, displays interesting overlapping electron-hole pairs, opening surface bandgap, anisotropy in its crystal structure and very much sought appealing material for room temperature broadband photodection applications. Here we report photoresponse thin films microchannel devices fabricated on silicon nitride substrates. A clear sharp rise photocurrent observed under illumination visible (532 nm) NIR wavelengths (1064 nm). The phoresponse convincing...
Topological insulators (TIs) possess exciting nonlinear optical properties due to presence of metallic surface states with the Dirac fermions and are predicted as a promising material for broadspectral phodotection ranging from UV (ultraviolet) deep IR (infrared) or terahertz range. The recent experimental reports demonstrating mostly carried out on non-flexible substrates there is huge demand fabrication high performing flexible optoelectronic devices using new exotic materials their...
The growth of FA-based mixed halide perovskite single-crystal via the ITC method has been investigated and characterized to detect its photosensitive properties. photophysical, responsivity detectivity also investigated.
Topological insulators are anticipated to be a viable option for flexible near-infrared (NIR) photodetection that basic potential comportment future photoelectric applications, wearable devices, and defence applications.
This work investigates the synthesis of Cesium (Cs) based all-inorganic (CsPbBr 3 ) perovskite single crystals (PSCs) at low temperatures (45 °C) for application in photosensitive devices.
Hybridizing topological materials (TM) with two-dimensional (2D) has resulted in interesting structures, such as van der Waals heterostructures (vdW), having potential optoelectronics. However, the performance of devices made out structures relies on charge carrier interactions among layers, which establishes basic trade-off between kinetically controlled dynamics at interface and vdW-based devices. In this perspective, three vdW are fabricated using a wet transfer technique, probed to study...
Gold nano-structures (Au-NS's) assembled on a multiwalled carbon nanotube (MWCNT's) reinforced functional substrate is very attractive system routinely used in optoelectronics, EM shielding plasmonics, catalysis, chemical sensing, and solar energy devices. Here we simple thermal annealing method to assemble gold nano-islands (Au-NI's) quantum dots (QD's) flexible lightweight multiwall (FL-MWCNT) paper. We report thickness dependent Au thin film form Au-NI's i.e. QD's FL-MWCNT The highly...
An isolated positive wedge disclination deforms an initially flat elastic sheet into a perfect cone when the is of infinite extent and elastically inextensible. The latter requires stretching strains to be vanishingly small. In this paper, rigorous analytical numerical results are obtained for disclination-induced deformed shape stress field bounded Föppl-von Kármán with finite extensibility, while emphasizing deviations from solution. particular, Gaussian curvature no longer localized as...
The morphological response of two-dimensional curved elastic sheets to an isolated defect (dislocation/disclination) is investigated within the framework Föppl-von Kármán shallow shell theory. reference surface, obtained as a configuration in absence and external forces, accordingly has finite non-zero curvature. interaction with curvature surface emphasized through problem driven buckling sheet. Detailed bifurcation diagrams, including post-buckling deformation behaviour, are plotted for...
Demonstration of broadband THz absorber based nanostructures topological insulators.
Hybrid flexible thermoelectric (TE) materials are widely being explored for wearable TEs, micro power generators, and self‐powered electronics. The commonly used methods developing hybrid TE organic–inorganic composite which exhibits low performance second is inorganic material deposition over organic substrate making it a two‐sheet structure that has sustainability concerns. In view of this, herein, different class highly designed using network electrospun 1D nanofibers (NFs) as provides...
Abstract The modified orbital valence force field (MOVFF) has been employed to compute the constants for FeF6 3-, GaF6 InCl6 SbCl6 − and M6+O6 (M = Mo, W Te). general mean amplitudes of vibration have also calculated Te) at temperatures: T O°K, 298.16°K 500°K. results briefly discussed. (OVFF) suggested by Heath Linnett1 applied several workers(2-5) octahedral XY6 type systems. In some cases large discrepancy occurs between observed frequencies when four OVFF used. Recently Ramaswamy...
Abstract In the current era of increasing demand for optoelectronic-based devices with ultra-rapid response, it is important to understand processes associated relaxation dynamics hot carriers and transient electrical properties WTe2 material under photoexcitation charge carriers. this work, using femtosecond laser pump-probe spectroscopy at room temperature we performed absorption measurement on sputtered deposited thin films having four different thicknesses study their The photoexcited...