Fabrication and modeling of β-phase PVDF-TrFE based flexible piezoelectric energy harvester

Chauhan, Sandeep Singh; Bhatt, Upendra Mohan; Gautam, Piyush; Thote, Shruti; Joglekar, M. M.; Manhas, S. K.

doi:10.1016/j.sna.2020.111879

Cited by 23 publications

(9 citation statements)

References 29 publications

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“…While volts transcends into the 100 V region, the reported current output is generally in the nano-micro amperages range. 67,88,90,107 Consequently, enhancing this current output remains one of the toughest challenges. One possible solution to this problem is to manufacture piezoelectric devices in a multi-stacking design on a exible substrate to use it as a bending energy harvester.…”

Section: Discussion/limitationsmentioning

confidence: 99%

“… 20 One of the most promising PVDF copolymers explored for piezoelectric properties is PVDF- co -TrFE (trifluoroethylene). This copolymer is interesting because it demonstrates a higher piezoelectric power density (312.85 μW cm −3 ) 90 when compared to PVDF (81.3 μW cm −3 ). 91 The TrFE monomer adds an extra fluorine to the polymer, which induces a higher tendency for β form formation.…”

Section: Fundamentals Of Piezoelectricitymentioning

confidence: 99%

“… 91 The TrFE monomer adds an extra fluorine to the polymer, which induces a higher tendency for β form formation. 92 PVDF-TrFE has been used in energy harvesters by spin coating, 90 electro-spinning 93–95 or bar coating 91 of the polymer. The processing and deposition parameters of the polymer are varied to optimise the β crystal phase formation and thus increase the piezoelectric output.…”

Section: Fundamentals Of Piezoelectricitymentioning

confidence: 99%

“…The processing and deposition parameters of the polymer are varied to optimise the β crystal phase formation and thus increase the piezoelectric output. 90 Electrospinning into nanofibers has been found to further increase the piezoelectric power density output of the polymer. 96 During electrospinning, a high bias electric field is applied which leads to dipole alignment along the major axis direction of the nanofibers.…”

Section: Fundamentals Of Piezoelectricitymentioning

confidence: 99%

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The intrinsic piezoelectric properties of materials – a review with a focus on biological materials

2021

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Section: Discussion/limitationsmentioning

confidence: 99%

Section: Fundamentals Of Piezoelectricitymentioning

confidence: 99%

Section: Fundamentals Of Piezoelectricitymentioning

confidence: 99%

Section: Fundamentals Of Piezoelectricitymentioning

confidence: 99%

See 2 more Smart Citations

The intrinsic piezoelectric properties of materials – a review with a focus on biological materials

2021

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“…Direct and inverse piezoelectric effect are well-known phenomena since the end of the XIX century [ 13 , 14 ], which can be exploited in resonators [ 15 ], micropumps [ 16 ], or more complex systems like sonars [ 17 ], continuous pressure monitor devices, [ 18 ] and in the so-called piezoelectric surgery [ 19 ]. Alongside this, pushed by the dramatic increases of energy request, the use of piezoelectric materials, as devices for energy harvesting, appears to be a very appealing research field [ 20 , 21 , 22 , 23 ]. In fact, the possibility of miniaturizing the piezoelectric transductors allowed their integration in shoes to convert, at each step, the effect of the pressure in electric energy [ 24 ], or to put them near the eyes of quadriplegic patients in order to facilitate the communication [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Wet Synthesis of Elongated Hexagonal ZnO Microstructures for Applications as Photo-Piezoelectric Catalysts

et al. 2020

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It is well known that energetic demand and environmental pollution are strictly connected; the side products of vehicle and industrial exhausts are considered extremely dangerous for both human and environmental health. In the last years, the possibility to simultaneously photo-degrade water dissolved pollutants by means of ZnO nanostructures and to use their piezoelectric features to enhance the photo-degradation process has been investigated. In the present contribution, an easy and low-cost wet approach to synthetize hexagonal elongated ZnO microstructures in the wurtzite phase was developed. ZnO performances as photo-catalysts, under UV-light irradiation, were confirmed on water dissolved methylene blue dye. Piezoelectric responses of the synthetized ZnO microstructures were evaluated, as well, by depositing them into films onto flexible substrates, and a home-made layout was developed, in order to stimulate the ZnO microstructures deposited on solid supports by means of mechanical stress and UV photons, simultaneously. A relevant increment of the photo-degradation efficiency was observed when the piezopotential was applied, proposing the present approach as a completely eco-friendly tool, able to use renewable energy sources to degrade water solved pollutants.

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Monolithic Integration of Printable PVDF‐TrFE Piezoelectric Multifunctional Devices: From Sensing to Actuation

Lee,

Bandari,

Paliakkara

et al. 2024

Adv Funct Materials

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This study demonstrates the development of multifunctional printable piezoelectric actuators using PVDF‐TrFE and PEDOT:PSS, capable of operating at low voltages and supporting a wide range of applications. By leveraging the high piezoelectric coefficient of PVDF‐TrFE and the conductivity of PEDOT:PSS, the actuators exhibit stable performance with precise inkjet printing deposition and optimized waveform parameters. The fabrication process integrates inkjet printing and standard lithography, enabling monolithic integration for high‐performance actuation and multifunctional sensing. The PVDF‐TrFE‐based actuators achieve low‐voltage operation (as low as 50 V), efficient energy transfer, and mechanical stability. Enhancing the beta phase of PVDF‐TrFE resulted in a deflection of ≈600 µm and vortex generation, crucial for lift in aerial robotic applications. Durability tests confirmed minimal performance degradation after 2,300 actuation cycles. Beyond mechanical deflection, the actuators exhibit sound detection and strain sensing capabilities. Experimental evaluations validated their ability to differentiate sound frequencies, detect muscle strain, and replicate bio‐inspired flight dynamics. A preliminary proof of concept for a double‐wing structure demonstrated lift generation at low voltages and resonant frequencies. The results indicate that these piezoelectric actuators are well‐suited for miniaturized robotic applications, particularly in aerial locomotion and multifunctional sensing, opening new possibilities for innovations in micro‐robotics, wearables, and aerial robotics.

show abstract

Fabrication and modeling of β-phase PVDF-TrFE based flexible piezoelectric energy harvester

Cited by 23 publications

References 29 publications

The intrinsic piezoelectric properties of materials – a review with a focus on biological materials

The intrinsic piezoelectric properties of materials – a review with a focus on biological materials

Wet Synthesis of Elongated Hexagonal ZnO Microstructures for Applications as Photo-Piezoelectric Catalysts

Monolithic Integration of Printable PVDF‐TrFE Piezoelectric Multifunctional Devices: From Sensing to Actuation

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