A5019815258- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Innovative Energy Harvesting Technologies
- Tactile and Sensory Interactions
- Energy Harvesting in Wireless Networks
- Crystallization and Solubility Studies
- Gas Sensing Nanomaterials and Sensors
- Dielectric materials and actuators
- X-ray Diffraction in Crystallography
- Advanced Thermoelectric Materials and Devices
- Wireless Power Transfer Systems
- Seismic Waves and Analysis
- ZnO doping and properties
- Pesticide Exposure and Toxicity
- Electrochemical sensors and biosensors
- Quantum Dots Synthesis And Properties
- Geological and Geophysical Studies
- Copper-based nanomaterials and applications
- Ferroelectric and Piezoelectric Materials
- Advanced Semiconductor Detectors and Materials
- Multiferroics and related materials
- Geophysical and Geoelectrical Methods
- Advanced Fiber Optic Sensors
- Polydiacetylene-based materials and applications
- Nanomaterials and Printing Technologies
University of Limerick
2024
Jadavpur University
2002-2022
All India Council for Technical Education
2002
This paper reports a self-powered, flexible, piezo- and pyro-electric hybrid nanogenerator (NG) device that can be fixed on different locations of human skin for detecting static dynamic pressure variations also monitor temperature fluctuations during the respiration process. An efficient cost-effective fabrication strategy has been developed to create electrospun poly(vinylidene fluoride) (PVDF)/graphene oxide (GO) nanofibers, which are used highly sensitive wearable sensor pyroelectric...
This work introduces a piezoelectric–pyroelectric nanogenerator (P-PNG) based on methylammonium lead iodide (CH3NH3PbI3) incorporated electrospun poly(vinylidene fluoride) (PVDF) nanofibers that are able to harvest mechanical and thermal energies. During the application of periodic compressive contact force at frequency 4 Hz, an output voltage ∼220 mV is generated. The P-PNG has piezoelectric coefficient (d33) ∼19.7 pC/N coupled with high durability (60 000 cycles) quick response time (∼1...
Parasitic magnetic noise arising from an electrical power transmission system is the most abundant form of waste energy in our daily life. In this work, a flexible and rollable magneto-mechano-electric nanogenerator (MMENG)-based wireless Internet Things (IoT) sensor has been demonstrated to capture utilize environmental absence direct current field. Free-standing magnetoelectric composites are fabricated by combining magnetostrictive nickel ferrite (NiFe2O4) nanoparticles (∼9 nm diameter)...
The real-time application of piezoelectric nanogenerators (PNGs) under a harsh environment remains challenge due to lower output performance and poor durability. Thus, the development flexible, sensitive, stable PNGs became topic interest capture different human motions including gesture monitoring speech recognition. Herein, scalable approach is adapted where naphthylamine bridging [Cd(II)-μ-I4] two-dimensional (2D) metal–organic framework (MOF)-reinforced poly(vinylidene fluoride) (PVDF)...
An all-fiber pyro- and piezo-electric nanogenerator for IoT based self-powered health-care monitoring has been presented.
In recent years, flexible and sensitive pressure sensors are of extensive interest in healthcare monitoring, artificial intelligence, national security. this context, we report the synthetic procedure a three-dimensional (3D) metal–organic framework (MOF) comprising cadmium (Cd) metals as nodes isoniazid (INH) moieties organic linkers (CdI2–INH═CMe2) for designing self-polarized ferroelectret-based highly mechano-sensitive skin sensors. The as-synthesized MOF preferentially nucleates stable...
An all-fiber acoustoelectric nanogenerator is fabricated by the Mg salt reinforced PVDF nanofibers as an active layer and interlocked conducting micro-fiber-based electrode for converting mechanical acoustic energies into useful electrical power.
Eco‐friendly and antimicrobial globular protein lysozyme is widely produced for several commercial applications. Interestingly, it can also be able to convert mechanical thermal energy into electricity due its piezo‐ pyroelectric nature. Here, we demonstrate engineering of piezoelectric devices that exploit the potential as environmentally friendly, biocompatible material harvesting sensorics, especially in micropowered electronic Noteworthy this flexible, shape adaptive made crystalline...
The design and development of intrinsically stretchable all-organic self-powered sensors concurrently perceiving temperature pressure remain a challenge but deliver an exciting platform to realize environmentally friendly wearable electronics. In this approach, biomimetic energy harvester is designed by xylitol-added poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS/Xyl) film as compatible overlay electrode with polyaniline-reinforced one-dimensional aligned...
Abstract Thermally processed lead iodide (PbI 2 ) thin films were prepared by the vacuum evaporation method in a constant ambient. Measured thickness of film was verified analytically from optical transmittance data wavelength range between 300 and 1600 nm. From Tauc relation for non‐direct inter band transition, gap found to be 2.58 eV X‐ray diffraction analysis confirmed that PbI are polycrystalline, having hexagonal structure. The low fluctuation Urbach energy indicates grain size is...
In this work, we demonstrate a simple and facile route ofcadmium sulfide (CdS) nanoparticle (NPs) grafted reduced graphene oxide (rGO) synthesis. It is found that pinch (0.25 wt%) of as synthesisedCdS/rGOnanocompositecan induce more than 90% electroactive phases in the electrospunpoly(vinylidene fluoride) (PVDF) nanofiber. Moreover, CdS/rGO nanocomposite doped PVDF nanofiber based nanogenerator (NG) can generate an output voltage approximately 4 V upon repetitive finger imparting. Thus, NG...
Abstract A standard sol‐gel method was used to deposit ZnO thin films of suitable thickness on glass substrate.The optical characteristics the visible infrared range thermal stress were critically observed. Morphological signature detected by X‐ray diffraction (XRD) and crystallite size determined Scherrer from XRD data consistent with grain estimated spectroscopic through Meulenkamp equation. The band gap value transmission spectrum found corroborate existing works. (© 2009 WILEY‐VCH Verlag...
Here, we report on the preparation of a piezoelectric nanogenerator (PNG) based reduced graphene oxide incorporated poly(vinylidene fluoride) film. A simple route synthesis is followed to prepare rGO and composite film (rGO-PVDF). It found that, trace amount can induce almost 93% electroactive phases with improved surface morphology in Owing its enhanced phase nucleation, rGO-PVDF be used piezo pyroelectric energy harvesting application. Moreover, PNG produce an open circuit voltage up 5 V...
Abstract Diethyl Chlorophosphate (DCP) is an important nerve agent mimic. Its misused use by terrorists and accidental release from industries creates severe panic among the general public. So, nowadays DCP sensing of great interest to researchers. Herein, polymeric nanofibers in conjunction with 3‐(benzothiazol)‐5‐bromo‐2‐hydroxybenzaldehyde oxime (BBHO) was prepared as a specific device for gas simulant DCP. Scanning electron microscopic study revealed
A magnetotelluric (MT) survey was conducted across the Narmoda-Son lineament to delineate zones of weakness along Khandwa-Indore traverse, Madhya Pradesh, Central India. This taken after two strong earthquakes at Jabalpur and Pandhana, magnitudes 6.4 6.0, came in quick succession. One 100 km long profile from Borgaon Barwaha chosen, with a station spacing about 8 10 km. MT signals were recorded, within period range 0.25 seconds 4096 seconds, Metronix MMS 02E system. These are capable mapping...
Perhaps the most abundant form of waste energy in our surrounding is parasitic magnetic noise arising from electrical power transmission system. In this work, a flexible and rollable magneto-mechano-electric nanogenerator (MMENG) based wireless IoT sensor has been demonstrated order to capture utilize noise. Free standing magnetoelectric (ME) composites are fabricated by combining magnetostrictive nickel ferrite nanoparticles piezoelectric polyvinylidene-co-trifluoroethylene polymer. The 0-3...