Piezoelectric characteristics of three-dimensional solid object of poly(l-lactide) fabricated by three-dimensional printing

Hayashi, Syota; Kamimura, Yuki; Tsukamoto, Nobuyuki; Imoto, Kenji; Sugitani, Hideki; Kondo, Takashi; Imada, Yuya; Nakiri, Takuo

doi:10.7567/jjap.54.10nf01

Cited by 14 publications

(13 citation statements)

References 33 publications

(57 reference statements)

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“…Under optimised conditions, the piezoelectric coefficient was doubled with respect to the untreated material. The use of additives has since been used to create piezoelectric structures from 3D printed PLLA [108].…”

Section: Additivesmentioning

confidence: 99%

Piezoelectric polymers: theory, challenges and opportunities

Smith

Kar‐Narayan

2021

International Materials Reviews

143

107

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Piezoelectric materials can directly transduce electrical and mechanical energy, making them attractive for applications such as sensors, actuators and energy harvesting devices. While often associated with ceramic materials, piezoelectric behaviour is also observed in many polymers. The flexibility, ease of processing and biocompatibility of piezoelectric polymers mean that they are often preferable for certain applications, despite their lower piezoelectric coefficients. This review will cover some theoretical and practical concepts of piezoelectricity in polymers, such as the symmetry requirements, the underlying mechanism and the necessary materials processing. A brief review of the applications of piezoelectric polymers is also presented. One of the main motivations of this review is to discuss the challenges and open questions in the field in an effort to highlight potential future research directions.

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Section: Additivesmentioning

confidence: 99%

Piezoelectric polymers: theory, challenges and opportunities

Smith

Kar‐Narayan

2021

International Materials Reviews

143

107

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“…3D printed BT [237][238][239], modified KNN [240], PVDF [241,242] and PLLA [243] have recently been fabricated for piezoelectric sensors and functional scaffolds which have limitedly been researched for tissue engineering applications. There are however challenges in processing and formulation of the raw material for printing and inducing piezoelectricity.…”

Section: D Printing Of Piezoelectric Materialsmentioning

confidence: 99%

Piezoelectric materials as stimulatory biomedical materials and scaffolds for bone repair

2018

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Electrical stimulation/electrical microenvironment are known effect the process of bone regeneration by altering the cellular response and are crucial in maintaining tissue functionality. Piezoelectric materials, owing to their capability of generating charges/potentials in response to mechanical deformations, have displayed great potential for fabricating smart stimulatory scaffolds for bone tissue engineering. The growing interest of the scientific community and compelling results of the published research articles has been the motivation of this review article. This article summarizes the significant progress in the field with a focus on the fabrication aspects of piezoelectric materials. The review of both material and cellular aspects on this topic ensures that this paper appeals to both material scientists and tissue engineers.

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“…The piezoelectricity of PLLA fibers used in the piezoelectric PLLA braided cords developed to date has been improved to the highest extent to enhance their sensing function. As reported previously [ 31 , 32 , 33 ], we increased the degree of crystallinity and the coefficient of fiber orientation, and controlled the higher-order structure so as to exclude amorphous portions to the greatest extent possible. As a result, current piezoelectric PLLA fibers lose their inherent strength and flexibility, and become brittle.…”

Section: Improved Piezoelectric Properties While Maintaining High Mec...mentioning

confidence: 99%

“…The results are summarized in Figure 2 . The figure shows images of a sample prepared by simple stretching, having piezoelectricity too low for use as a sensor (a), a sample with high piezoelectricity, which was obtained using a previously reported starching process (b) [ 22 , 27 , 30 , 31 , 32 , 33 ], and a sample that we developed with practical piezoelectricity and improved mechanical properties (c). We can clearly see that a well-developed higher-order structure was necessary to realize a high piezoelectric constant.…”

Section: Improved Piezoelectric Properties While Maintaining High Mec...mentioning

confidence: 99%

Application of Piezoelectric PLLA Braided Cord as Wearable Sensor to Realize Monitoring System for Indoor Dogs with Less Physical or Mental Stress

et al. 2023

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We attempted to realize a prototype system that monitors the living condition of indoor dogs without physical or mental burden by using a piezoelectric poly-l-lactic acid (PLLA) braided cord as a wearable sensor. First, to achieve flexibility and durability of the piezoelectric PLLA braided cord used as a sensor for indoor dogs, the process of manufacturing the piezoelectric PLLA fiber for the piezoelectric braided cord was studied in detail and improved to achieve the required performance. Piezoelectric PLLA braided cords were fabricated from the developed PLLA fibers, and the finite element method was used to realize an e-textile that can effectively function as a monitoring sensor. As a result, we realized an e-textile that feels similar to a high-grade textile and senses the complex movements of indoor dogs without the use of a complex computer system. Finally, a prototype system was constructed and applied to an actual indoor dog to demonstrate the usefulness of the e-textile as a sensor for indoor dog monitoring.

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Piezoelectric characteristics of three-dimensional solid object of poly(l-lactide) fabricated by three-dimensional printing

Cited by 14 publications

References 33 publications

Piezoelectric polymers: theory, challenges and opportunities

Piezoelectric polymers: theory, challenges and opportunities

Piezoelectric materials as stimulatory biomedical materials and scaffolds for bone repair

Application of Piezoelectric PLLA Braided Cord as Wearable Sensor to Realize Monitoring System for Indoor Dogs with Less Physical or Mental Stress

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