Epsita Kar

ORCID: 0000-0003-2693-5560
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About
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Research Areas
  • Advanced Sensor and Energy Harvesting Materials
  • Innovative Energy Harvesting Technologies
  • Conducting polymers and applications
  • Dielectric materials and actuators
  • Tactile and Sensory Interactions
  • Electromagnetic wave absorption materials
  • Interactive and Immersive Displays
  • Advanced battery technologies research
  • Magnetic and transport properties of perovskites and related materials
  • Advancements in Solid Oxide Fuel Cells
  • High voltage insulation and dielectric phenomena
  • Advanced Antenna and Metasurface Technologies
  • Muscle activation and electromyography studies
  • Gas Sensing Nanomaterials and Sensors
  • Electronic and Structural Properties of Oxides
  • Nanomaterials and Printing Technologies
  • Noise Effects and Management
  • Advanced Materials and Mechanics
  • Polymer Nanocomposite Synthesis and Irradiation
  • Energy Harvesting in Wireless Networks

Central Glass and Ceramic Research Institute
2022-2024

National Council Of Educational Research And Training
2024

Indian Institute of Engineering Science and Technology, Shibpur
2015-2021

Institute of Engineering Science
2015-2021

Banasthali University
2019-2021

The influence of copper oxide nanoparticles on the polymorphism PVDF is systematically investigated. Strong interfacial interactions between negative nanoparticle surface and positive –CH<sub>2</sub>dipoles enhance electroactive β-phase.

10.1039/c5ra21903e article EN RSC Advances 2015-01-01

Advancement in self-powered portable and wearable electronics mostly depends on the realization of an efficient human activity-based energy harvester electronic skin (e-skin)-mimicking tactile mechanosensing property natural skin. A can supply power to flexible, potable, equipment associated with body, whereas a e-skin mechanosensor precisely detect static dynamic pressure stimuli. Here, we report development NiO@SiO2/PVDF nanocomposite, facile piezoelectric material possessing superior...

10.1021/acssuschemeng.8b01851 article EN ACS Sustainable Chemistry & Engineering 2018-07-06

Poly(vinylidene fluoride) (PVDF) nanocomposites are recently gaining importance due to their unique dielectric and electroactive responses.

10.1039/c5cp03975d article EN Physical Chemistry Chemical Physics 2015-01-01

Smart, self-powered, and wearable e-skin that mimics the pressure sensing property of human skin is indispensable to boost up cutting edge robotics, artificial intelligence, prosthesis, health-care monitoring technologies. Here, fabrication a facile flexible hybrid piezoelectric (HPES) with multifunctions tactile mechanosensing, energy harvesting, self-cleaning, ultraviolet (UV)-protecting, microwave shielding properties reported. The principal block HPES an SnO2 nanosheets@SiO2...

10.1021/acsami.9b06452 article EN ACS Applied Materials & Interfaces 2019-04-22

Wearable bioelectronic patches are creating a transformative effect in the health care industry for human physiological signal monitoring. However, use of such is restricted due to unavailability proper power source. Ideal biodevices should be thin, soft, robust, energy-efficient, and biocompatible. Here, we report development flexible, lightweight, biocompatible electronic skin-cum-portable source wearable bioelectronics by using processed chicken feather fiber. The device fabricated with...

10.1021/acsami.3c00509 article EN ACS Applied Materials & Interfaces 2023-04-17

We report the prototype fabrication of a flexible, facile multiwalled carbon nanotube@ silica incorporated poly(vinylidene fluoride) (MWCNT@SiO2/PVDF) nanocomposite-based piezoelectric energy harvester as cheaper and cleaner source alternative energy. In depth study local ferroelectric properties nanocomposites was performed by piezoresponse force microscopy (PFM) technique. The nanogenerator scavenges low-frequency biomechanical abundant vibration ambient environment to produce remarkable...

10.1021/acsanm.8b00770 article EN ACS Applied Nano Materials 2018-07-31

We report the prototype fabrication of a flexible, biocompatible bio-piezoelectric energy harvester using keratin-enriched chicken feathers.

10.1039/d0se01433h article EN Sustainable Energy & Fuels 2021-01-01

Here, in this present work, the development of a lightweight, flexible hybrid energy harvester using composite BaTi0.89Sn0.11O3 (BTS)/polydimethylsiloxane (PDMS) has been proposed. A significantly enhanced output performance (HEH) was achieved by strategically coupling piezoelectric effect with triboelectric output. Thus, multiphase coexisted BTS particles as confirmed structural and dielectric properties, high value d33 coefficient ∼412 pC/N, were used filler for functional layer device....

10.1021/acsaem.3c00635 article EN ACS Applied Energy Materials 2023-06-27

The escalating demand for wearables has led to a surge in the development of portable and flexible electronics. Consequently, exploring different materials efficient design device become an inevitable aspect this particular research area. Therefore, work, we present post-transition metal dichalcogenide tin disulfide (SnS

10.1021/acsami.4c14400 article EN ACS Applied Materials & Interfaces 2024-11-28

ABSTRACT The synthesis of Er 3+ @GeO 2 and @SiO nanoparticle impregnated self‐standing poly(vinylidene fluoride) films by a facile solution casting technique has been reported. prepared were thoroughly characterized using X‐ray diffraction technique, field emission scanning electron microscopy, transmission microscopy. optical properties evaluated UV–Vis spectroscopy. Detailed study on the temperature dependent dielectric composite with different content also investigated to establish...

10.1002/app.44016 article EN Journal of Applied Polymer Science 2016-06-26

Confronting the depletion of fossil fuel energy as well pollution generated from chemical batteries, associated with increasing number electronic equipment and internet things, results in a high requirement lightweight, low cost, sustainable, durable power devices. Currently, flexible self-powered piezoelectric harvester (PZEH) is suitable alternative, which may be easily integrated small electronics to realize real-time sustainable generation. Therefore, novel PZEH has been fabricated at...

10.1002/er.8682 article EN International Journal of Energy Research 2022-09-13

Flexible electronic skins (e‐skins) have a wide range of applications in health monitoring, human–machine interfaces, and robotics. Herein, novel architecture e‐skins with combination multimode measurement low‐cost implementation is proposed. A single skin layer used to integrate both the pressure temperature sensing properties. An e‐skin membrane first developed poly(vinylidene) fluoride incorporated silicon dioxide nanoparticles. When combined electrodes, this simple allows sensing. This...

10.1002/ente.202201143 article EN Energy Technology 2022-12-08

The Ba0.90Y0.10SnO3 has prepared by a sol-gel combustion route followed calcination at 1000°C for 8 h and sintered 1300°C 12 h. Rietveld refinement studies of the ceramic sample indicates cubic crystal structure under space group Pm3m. Further, an increase in dielectric constant dissipation factor been noted with temperature particular frequency while they decrease frequency. impedance plot generated various temperatures to separate contribution grain, grain boundary, electrode specimen bulk...

10.1063/5.0016650 article EN AIP conference proceedings 2020-01-01

We demonstrate the potential of dopamine modified 0.5(Ba0.7Ca0.3)TiO3-0.5Ba(Zr0.2Ti0.8)O3 filler incorporated poly-vinylidene fluoride (PVDF) composite prepared by solution cast method as both flexible energy storage and harvesting devices. The introduction in surface functionalization acts bridging elements between polymer matrix results a better dispersion an improved dielectric loss tangent (<0.02) along with permittivity ranges from 9 to 34 which is favorable for storage. Additionally,...

10.48550/arxiv.2102.08608 preprint EN other-oa arXiv (Cornell University) 2021-01-01
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