Piezoelectric and mechanical properties of PVDF-PZT composite

Pradhan, Santanu Kumar; Kumar, Amit; Kour, P.; Pandey, Rabichandra; Kumar, Pawan; Kar, Manoranjan; Sinha, Amar Nath

doi:10.1080/00150193.2020.1735889

Cited by 28 publications

(9 citation statements)

References 24 publications

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“…It is highly recommended to consider MFCs in future designs for their great properties, such as a lower Young's modulus than PZT and a higher d31 constant than PVDF. It is also reported that the composites of PZT-PVDF show better performance in electrical and mechanical properties compared to MFCs [138]. This composite could be one of the most promising materials for future energy harvesters in oceanic applications.…”

Section: Methodsmentioning

confidence: 87%

An Atlas of Piezoelectric Energy Harvesters in Oceanic Applications

Kargar

Hao

2022

Sensors

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Nowadays, a large number of sensors are employed in the oceans to collect data for further analysis, which leads to a large number of demands for battery elimination in electronics due to the size reduction, environmental issues, and its laborious, pricy, and time-consuming recharge or replacement. Numerous methods for direct energy harvesting have been developed to power these low-power consumption sensors. Among all the developed harvesters, piezoelectric energy harvesters offer the most promise for eliminating batteries from future devices. These devices do not require maintenance, and they have compact and simple structures that can be attached to low-power devices to directly generate high-density power. In the present study, an atlas of 85 designs of piezoelectric energy harvesters in oceanic applications that have recently been reported in the state-of-the-art is provided. The atlas categorizes these designs based on their configurations, including cantilever beam, diaphragm, stacked, and cymbal configurations, and provides insightful information on their material, coupling modes, location, and power range. A set of unified schematics are drawn to show their working principles in this atlas. Moreover, all the concepts in the atlas are critically discussed in the body of this review. Different aspects of oceanic piezoelectric energy harvesters are also discussed in detail to address the challenges in the field and identify the research gaps.

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Section: Methodsmentioning

confidence: 87%

An Atlas of Piezoelectric Energy Harvesters in Oceanic Applications

Kargar

Hao

2022

Sensors

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“…The piezoelectricity of PVDF and P(VDF-TrFE) can be enhanced by loading piezoelectric ceramic particles (BTO and PZT) [ 68 ], or carbon-based materials (carbon nanotubes) [ 69 ]. However, it should be noted that these particles could deteriorate the flexibility of TDPFs.…”

Section: Methodsmentioning

confidence: 99%

Piezoelectric fibers for flexible and wearable electronics

Qian

Wang

Yan

2023

Front. Optoelectron.

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Flexible and wearable electronics represent paramount technologies offering revolutionized solutions for medical diagnosis and therapy, nerve and organ interfaces, fabric computation, robot-in-medicine and metaverse. Being ubiquitous in everyday life, piezoelectric materials and devices play a vital role in flexible and wearable electronics with their intriguing functionalities, including energy harvesting, sensing and actuation, personal health care and communications. As a new emerging flexible and wearable technology, fiber-shaped piezoelectric devices offer unique advantages over conventional thin-film counterparts. In this review, we survey the recent scientific and technological breakthroughs in thermally drawn piezoelectric fibers and fiber-enabled intelligent fabrics. We highlight the fiber materials, fiber architecture, fabrication, device integration as well as functions that deliver higher forms of unique applications across smart sensing, health care, space security, actuation and energy domains. We conclude with a critical analysis of existing challenges and opportunities that will be important for the continued progress of this field. Graphical Abstract

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“…One of the solutions is to use inorganic nanofillers to make composite materials with PVDF. The inorganic nanofiller can be PZT [ 15 ], BaTiO 3 nanoparticles (NPs) [ 16 ], ZnO nanoparticles [ 17 ], porous cellulose nanofibrils (CNFs) [ 18 ], etc. However, the addition of nanofillers creates additional defects at the interface between the filler and the polymer [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Flexible Film Bulk Acoustic Resonator Based on Low-Porosity β-Phase P(VDF-TrFE) Film for Human Vital Signs Monitoring

Gao

et al. 2023

Sensors

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P(VDF-TrFE) is a promising material for flexible acoustic devices owing to its good piezoelectric performance and excellent stretchability. However, the high density of internal pores and large surface roughness of the conventional P(VDF-TrFE) results in a high propagation attenuation for acoustic waves, which limits its use in flexible acoustic devices. In this paper, a novel method based on two-step annealing is proposed to effectively remove the pores inside the P(VDF-TrFE) film and reduce its surface roughness. The obtained P(VDF-TrFE) film possesses excellent characteristics, including a high breakdown strength of >300 kV/mm, a high-purity β-phase content of more than 80%, and high piezoelectric coefficients (d33) of 42 pm/V. Based on the low-porosity β-phase P(VDF-TrFE) film, we fabricated flexible film bulk acoustic resonators (FBARs) which exhibit high sharp resonance peaks. The pressure sensor was made by sandwiching the FBARs with two PDMS microneedle patches. Heartbeat and respiration rate monitoring were achieved using the pressure sensor. This work demonstrates the feasibility of high-performance flexible piezoelectric acoustic resonators based on low-porosity P(VDF-TrFE) films, which could see wider applications in the wearable sensors for both physical and chemical sensing.

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Piezoelectric and mechanical properties of PVDF-PZT composite

Cited by 28 publications

References 24 publications

An Atlas of Piezoelectric Energy Harvesters in Oceanic Applications

An Atlas of Piezoelectric Energy Harvesters in Oceanic Applications

Piezoelectric fibers for flexible and wearable electronics

Flexible Film Bulk Acoustic Resonator Based on Low-Porosity β-Phase P(VDF-TrFE) Film for Human Vital Signs Monitoring

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