Polymer electrets for electronics, sensors, and photonics

Bauer‐Gogonea, S.; Bauer, Siegfried

doi:10.1016/b978-012513745-4/50084-6

Cited by 16 publications

(4 citation statements)

References 430 publications

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“…In cases of severe heart failure, the use of pacemakers with coordination in the heart muscle contraction helps relieve the symptoms of the heart failure and often increases the life expectancy of patients. [1][2][3] Pacemakers are devices that produce impulses and direct them to the heart. Any electrical impulse that comes out of the heart leads to heart stimulation and contraction.…”

Section: Introductionmentioning

confidence: 99%

Hybrid fibrous (PVDF-BaTiO₃)/ PA-11 piezoelectric patch as an energy harvester for pacemakers

Mashayekhan

Kabir

Kamalidehghan

et al. 2022

Journal of Industrial Textiles

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Lithium batteries have been widely used to power up implantable medical devices such as pacemakers that are often designed to treat, diagnose, and prevent different diseases. However, due to their limited capacity and lifetime, patients have to undergo a surgical procedure to replace the discharged battery. Recently, nanogenerators have been emerged and are broadly accepted since they can convert tiny biomechanical forces, such as heartbeats, into electrical energy. This study aims to manufacture a biocompatible and high-performance piezoelectric energy harvester (PEH) that is capable to be charged by the energy received from the heartbeat and store the generated voltage. In this research, a hybrid structure of poly (vinylidene fluoride) (PVDF) coupling with polyamide-11 (PA-11) was fabricated using dual electrospinning to enhance the piezoelectric properties of the intended PEH. The piezoelectric test results show an acceptable increase in nanofibers’ piezoelectric sensitivity from 62.87 mV/N to 75.75 mV/N by adding 25% (v/v) of PA-11 to PVDF, indicating the synergistic effect of PVDF and PA-11. The specimen PVDF (75% v/v)-PA-11 (25% v/v) also showed the highest mechanical strength and consequently is suggested as the optimum sample. To further enhance the efficacy and sensitivity of PEH to convert the small mechanical forces into an acceptable voltage, 15% (w/w) of barium titanate (BaTiO3) nanoparticles were added to the hybrid structure. The crystallinity and mechanical strength were noticeably increased by incorporating BaTiO3 nanoparticles into the fibrous structure, leading to a piezoelectric sensitivity of 107.52 mV/N. This result lays the groundwork for producing an effective piezoelectric patch that could be used as pacemaker batteries.

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Section: Introductionmentioning

confidence: 99%

Hybrid fibrous (PVDF-BaTiO₃)/ PA-11 piezoelectric patch as an energy harvester for pacemakers

Mashayekhan

Kabir

Kamalidehghan

et al. 2022

Journal of Industrial Textiles

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“…More recently, polymer foams functioned as piezoelectrets have aroused considerable attention and emerged as a novel class of materials for electromechanical transducers, offering chances for a wide range of challenges and applications for material optimization. However, many of the fundamental properties of these materials and applied aspects are expected to explore further [1][2][3][4][5][6][7][8][9]. Cellular polypropylene (PP) is the most extensively studied piezoelectret and most applications of piezoelectrets are based on PP piezoelectrets.…”

Section: Introductionmentioning

confidence: 99%

Performance of Piezoelectrets Made of Non-Porous Polytetrafluoroethylene and Fluoroethylenepropylene Layers

Sun

Zhang

Cao

et al. 2011

MSF

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The thermal stability of piezoelectricd33coefficients and charge dynamics in the piezoelectret films with tailored microstructure, made of non-porous polytetrafluoroethylene (PTFE) and fluoroethylenepropylene (FEP) layers, are investigated by the measurements of the isothermal decay of piezoelectricd33coefficients at elevated temperatures and the analysis of thermally stimulated discharge (TSD) current spectra in short circuit, respectively. The results show that the quasi-static piezoelectricd33coefficient up to 300 pC/N is achieved and its Young's modulus is about 0.28 MPa. Thed33values in the present studied films show improved thermal stability compared with the films without regular microstructure. The drift path for the most of detrapped charges in the films is through the solid dielectric layer.

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“…Polymer based electrets are dielectric materials that exhibit a quasi-permanent electrical charge. The electret charge may consist either of "real" charges (henceforth called charge electrects) or it may be a "true" polarization charge (dipole electrets) [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…Polymer based electrets have active role in high-technology applications (passive packaging and coating materials, microelectronics) [2]. Other classes of high-technology functional polymers include conducting polymers for batteries and electronic wiring, photosensitive polymers for microelectronic lithography processes, photoconducting polymers for laser printers, photochromic and hole-burning polymers for optical data storage, and electroluminescent polymers for large area displays [2]. For some applications it is desirable to increase polarity of the polymer films.…”

Section: Introductionmentioning

confidence: 99%

Electrical Properties of Polymer Composites

Podgrabinski

Slepička

Rybka³

et al. 2005

MSF

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Permittivity of about 1 µm thin films prepared from polymethylmetactrylate (PMMA) solution doped with 20 % of diphenyl sulfoxide was studied. Permittivity of the films was measured as a function of the temperature. The measurement of the dependence of polarization on electrical field was performed using a standard Sawyer-Tower circuit. The presence of the dopant increases the composite permittivity namely above the PMMA glass transition temperature. Hysteresis loops observed on the measured polarization vs. electrical field dependence indicate easier and more pronounced polarizability of the composite comparing to pristine PMMA.

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Polymer electrets for electronics, sensors, and photonics

Cited by 16 publications

References 430 publications

Hybrid fibrous (PVDF-BaTiO₃)/ PA-11 piezoelectric patch as an energy harvester for pacemakers

Hybrid fibrous (PVDF-BaTiO₃)/ PA-11 piezoelectric patch as an energy harvester for pacemakers

Performance of Piezoelectrets Made of Non-Porous Polytetrafluoroethylene and Fluoroethylenepropylene Layers

Electrical Properties of Polymer Composites

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Polymer electrets for electronics, sensors, and photonics

Cited by 16 publications

References 430 publications

Hybrid fibrous (PVDF-BaTiO3)/ PA-11 piezoelectric patch as an energy harvester for pacemakers

Hybrid fibrous (PVDF-BaTiO3)/ PA-11 piezoelectric patch as an energy harvester for pacemakers

Performance of Piezoelectrets Made of Non-Porous Polytetrafluoroethylene and Fluoroethylenepropylene Layers

Electrical Properties of Polymer Composites

Contact Info

Product

Resources

About

Hybrid fibrous (PVDF-BaTiO₃)/ PA-11 piezoelectric patch as an energy harvester for pacemakers

Hybrid fibrous (PVDF-BaTiO₃)/ PA-11 piezoelectric patch as an energy harvester for pacemakers