Performance of Piezoelectric Power Generation of Multilayered Poly(vinylidene fluoride) under High Mechanical Strain

Nakajima, Takashi; Okaya, Keiko; Ohta, Kanako; Furukawa, T.; Okamura, Soichiro

doi:10.1143/jjap.50.09nd14

Cited by 10 publications

(5 citation statements)

References 31 publications

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“…15 and an early study indicated in Ref. 23, respectively. From the obtained results, the theoretically calculated force of the 30-multilayered PLLA film is more than 10 times larger than that of the single-layered PVDF film.…”

Section: Evaluation Of Vibration In the Edge Facementioning

confidence: 92%

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Fundamental Study on Vibration in Edge Face of Piezoelectric Chiral Polymer Film

Takarada

Kataoka

Yamamoto

et al. 2013

Jpn. J. Appl. Phys.

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We evaluate the vibration in the edge face of a poly(L-lactic acid) (PLLA) film from the propagated signal of an ultrasonic wave generated by the excitation force of the edge. Although the excitation area is too small to drive the edge face, the vibration can be measured only using the fixing method that does not suppress the resonance and the equipment with a high signal-to-noise ratio. This is considered to be due to the fact that the theoretically calculated force of the PLLA film is more than 10 times larger than that of a well-known ferroelectric polymer film, poly(vinylidene fluoride). We confirm that the film functions as a resonator and can be applied to a resonated transducer. In spite of the vibration in the edge face of the polymer film, we observe compliant responses to excitations by burst or rectangular waves. The practicality of a resonator can be suggested.

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Section: Evaluation Of Vibration In the Edge Facementioning

confidence: 92%

“…Here, we derive and calculate the excitation force theoretically. 8,13,15,[21][22][23] The excitation force of the edge face F is expressed by deriving a d-type piezoelectric equation as…”

Section: Evaluation Of Vibration In the Edge Facementioning

confidence: 99%

Fundamental Study on Vibration in Edge Face of Piezoelectric Chiral Polymer Film

Takarada

Kataoka

Yamamoto

et al. 2013

Jpn. J. Appl. Phys.

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show abstract

“…Moreover, by substituting a H atom by a F atom in one of the four VDF monomers in the cell, a 75/25 mol% P(VDF-TrFE) was constructed, and the e 33 for P(VDF-TrFE) was calculated as −0.211 C m −2 . In addition to the above studies, theoretical calculations can also be obtained for shear piezoelectricity, [230] the effect of large elastic strain on piezoelectric properties, [231] the piezoelectric properties of PVDF-based composite piezoelectric materials, [232,233] and the effect of processing conditions on piezoelectric properties. [234]…”

Section: Theoretical Calculations and Numerical Analysis Of Piezoelec...mentioning

confidence: 99%

Recent Progress on Structure Manipulation of Poly(vinylidene fluoride)‐Based Ferroelectric Polymers for Enhanced Piezoelectricity and Applications

Zhang

Zhu

et al. 2023

Adv Funct Materials

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Poly(vinylidene fluoride) (PVDF)‐based polymers demonstrate great potential for applications in flexible and wearable electronics but show low piezoelectric coefficients (e.g., −d33 < 30 pC N−1). The effective improvement for the piezoelectricity of PVDF is achieved by manipulating its semicrystalline structures. However, there is still a debate about which component is the primary contributor to piezoelectricity. Therefore, current methods to improve the piezoelectricity of PVDF can be classified into modulations of the amorphous phase, the crystalline region, and the crystalline–amorphous interface. Here, the basic principles and measurements of piezoelectric coefficients for soft polymers are first discussed. Then, three different categories of structural modulations are reviewed. In each category, the physical understanding and strategies to improve the piezoelectric performance of PVDF are discussed. In particular, the crucial role of the oriented amorphous fraction at the crystalline–amorphous interface in determining the piezoelectricity of PVDF is emphasized. At last, the future development of high performance piezoelectric polymers is outlooked.

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“…10). 24,25) The surplus electric power from the photoelectric cell was stored in a capacitor, thus eliminating the need for batteries.…”

Section: Applicationsmentioning

confidence: 99%

Film Sensor Device Fabricated by a Piezoelectric Poly(L-lactic acid) Film

Ando

Kawamura

Kageyama

2012

Jpn. J. Appl. Phys.

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Synthetic piezoelectric polymer films produced from petroleum feedstock have long been used as thin-film sensors and actuators. However, the fossil fuel requirements for synthetic polymer production and carbon dioxide emission from its combustion have raised concern about the environmental impact of its continued use. Eco-friendly biomass polymers, such as poly(L-lactic acid) (PLLA), are made from plant-based (vegetable starch) plastics and, thus, have a much smaller carbon footprint. Additionally, PLLA does not exhibit pyroelectricity or unnecessary poling. This suggests the usefulness of PLLA films for the human–machine interface (HMI). As an example of a new HMI, we have produced a TV remote control using a PLLA film. The intuitive operation provided by this PLLA device suggests that it is useful for the elderly or handicapped.

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Performance of Piezoelectric Power Generation of Multilayered Poly(vinylidene fluoride) under High Mechanical Strain

Cited by 10 publications

References 31 publications

Fundamental Study on Vibration in Edge Face of Piezoelectric Chiral Polymer Film

Fundamental Study on Vibration in Edge Face of Piezoelectric Chiral Polymer Film

Recent Progress on Structure Manipulation of Poly(vinylidene fluoride)‐Based Ferroelectric Polymers for Enhanced Piezoelectricity and Applications

Film Sensor Device Fabricated by a Piezoelectric Poly(L-lactic acid) Film

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