Recent Advances in Organic Piezoelectric Biomaterials for Energy and Biomedical Applications

Shin, Dong‐Myeong; Hong, Suck Won; Hwang, Yoon‐Hwae

doi:10.3390/nano10010123

Cited by 107 publications

(77 citation statements)

References 106 publications

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“…Subsequently, the effective integration of ZnO nanorod arrays dramatically increased the output performance up to 4.4 W m −2 [3]. Successes in nanogenerators comprising ZnO nanostructures have driven the development of many advanced piezoelectric materials [4][5][6][7][8][9][10][11]. Piezoelectric materials, which have been adopted in nanogenerators, can be categorized into two different groups: inorganic and organic materials.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Electrical Outputs of Piezoelectric Nanogenerators by Controlling the Dielectric Constant of ZnO/PDMS Composite

Amangeldinova

Aben

et al. 2021

Micromachines

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Structural optimizations of the piezoelectric layer in nanogenerators have been predicted to enhance the output performance in terms of the figure of merit. Here, we report the effect of dielectric constant on electrical outputs of piezoelectric nanogenerator using ZnO/PDMS composites with varied ZnO coverages. The dielectric constant of piezoelectric layers was adjusted from 3.37 to 6.75. The electrical output voltage of 9 mV was achieved in the nanogenerator containing the ZnO/PDMS composite with the dielectric constant of 3.46, which is an 11.3-fold enhancement compared to the value of the nanogenerator featuring the composite with high dielectric constants. Significantly, lowering the dielectric constant of the piezoelectric layer improves the electrical output performance of piezoelectric nanogenerators.

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Section: Introductionmentioning

confidence: 99%

Enhancing Electrical Outputs of Piezoelectric Nanogenerators by Controlling the Dielectric Constant of ZnO/PDMS Composite

Amangeldinova

Aben

et al. 2021

Micromachines

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“…Poly-d-lactic acid (PDLA) and poly-l-lactic acid (PLLA) are a group of optically active polymers showing piezoelectricity during uniaxial elongation [ 29 , 30 ]. Medical devices from polymers, including the piezoelectric ones, are cheap in processing and material costs [ 31 ]. Most of the piezoelectric polymers become the right candidates for biomechanical devices, bioelectronics, and biological systems.…”

Section: Introductionmentioning

confidence: 99%

Progress in the Applications of Smart Piezoelectric Materials for Medical Devices

2020

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Smart piezoelectric materials are of great interest due to their unique properties. Piezoelectric materials can transform mechanical energy into electricity and vice versa. There are mono and polycrystals (piezoceramics), polymers, and composites in the group of piezoelectric materials. Recent years show progress in the applications of piezoelectric materials in biomedical devices due to their biocompatibility and biodegradability. Medical devices such as actuators and sensors, energy harvesting devices, and active scaffolds for neural tissue engineering are continually explored. Sensors and actuators from piezoelectric materials can convert flow rate, pressure, etc., to generate energy or consume it. This paper consists of using smart materials to design medical devices and provide a greater understanding of the piezoelectric effect in the medical industry presently. A greater understanding of piezoelectricity is necessary regarding the future development and industry challenges.

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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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Recent Advances in Organic Piezoelectric Biomaterials for Energy and Biomedical Applications

Cited by 107 publications

References 106 publications

Enhancing Electrical Outputs of Piezoelectric Nanogenerators by Controlling the Dielectric Constant of ZnO/PDMS Composite

Enhancing Electrical Outputs of Piezoelectric Nanogenerators by Controlling the Dielectric Constant of ZnO/PDMS Composite

Progress in the Applications of Smart Piezoelectric Materials for Medical Devices

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

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