Biocompatible CaTiO3-PVDF composite-based piezoelectric nanogenerator for exercise evaluation and energy harvesting

Panda, Sudhansu Sekhar; Hajra, Sugato; Jeong, Hyohoon; Panigrahi, Basanta K.; Pakawanit, Phakkhananan; Dubal, Deepak P.; Hong, Seonki; Kim, Hoe Joon

doi:10.1016/j.nanoen.2022.107682

Cited by 83 publications

(31 citation statements)

References 45 publications

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“…For example, Panda et al studied the effect of different concentrations (2–10 wt%) of CaTiO 3 on the piezoelectric and dielectric properties of PVDF. [ 98 ] They reported maximum enhancement of the β‐phase, as well as a nearly two times increase in the dielectric permittivity in the presence of 8 wt% of CaTiO 3 NPs with a peak‐to‐peak output voltage of 20 V and a current of 250 nA. The authors demonstrated the pressure sensing and human motion sensing capability of the sensor.…”

Section: Sensor Applicationsmentioning

confidence: 98%

Nanofiller‐Induced Enhancement of PVDF Electroactivity for Improved Sensing Performance

Chatterjee

Das

Saha

et al. 2023

Advanced Sensor Research

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Piezoelectric self‐powered sensors are promising platforms for wearable portable devices. Poly(vinylidene fluoride) (PVDF) and its copolymer derivatives are extensively explored as a soft piezoelectric material owing to their high piezoelectric coefficient, chemical thermal stability, biocompatibility, lightweight, and excellent flexibility. It is proved that the dominance of the electroactive (EA) β‐phase crystals versus the non‐electroactive α‐phase crystals is one of the key parameters to obtaining high piezoelectric performance of PVDF. Conventional methods, such as mechanical stretching, electrical poling, and high‐temperature annealing, are investigated to enhance the fraction of the β‐phase. Recently, embedding nanoscale fillers in the PVDF matrix has been investigated to further increase the β‐phase fraction and achieved considerable advances. The introduction of nanofillers is also advantageous in terms of improving the electrical conductivity and dielectric properties of PVDF, which are not readily obtained through conventional methods. This review introduces the principles of EA phase transformation in the presence of nanofillers and summarizes recent advances achieved by introducing various fillers, such as perovskites, oxide semiconductors, and 2D chalcogenides. The potential sensor applications of the PVDF nanocomposites responding to temperature, light, acoustic, and mechanical stimuli are reviewed. This review ends with the outlook of this new approach.

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Section: Sensor Applicationsmentioning

confidence: 98%

Nanofiller‐Induced Enhancement of PVDF Electroactivity for Improved Sensing Performance

Chatterjee

Das

Saha

et al. 2023

Advanced Sensor Research

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“…Panda et al studied new materials such as calcium titanate (CTO) and polyvinylidene fluoride (PVDF), which provide energy for metallograph nanogenerator (PENG). Sensors collect information to monitor people's physical health and prevent chronic diseases and sports injuries [29]. Sahu et al used waste textiles for reprocessing to generate new energy and then used sensors for application in sports facilities [30].…”

Section: 1mentioning

confidence: 99%

Construction and Development Strategy of an Application System of Intelligent Sports in China’s Sports Industry

Tang

Zan

Zhang

et al. 2022

Mathematical Problems in Engineering

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Methods of literature review and model construction were used to study the construction and development strategy of an intelligent sports application system in the sports industry. After the literature review of the sports industry and the application of artificial intelligence in this industry, we analyzed the significance of the intelligent sports application system for the development of the Chinese sports industry from the perspective of elements, data, and policies in the sports industry. The research followed four principles of system construction, which are scientificity, practicalness, efficiency, and coordination. First, we built a framework for the intelligent sports application system and designed its function from governmental, industrial, political, and individual perspectives. Second, the content of the application system was analyzed in detailed in five layers including technology, industry, application, challenge, and security. Finally, we structured the operation model according to four units: the database, intermediary platform, social subjects, and industrial subjects. This study put forward the following policy implication: it is required to (1) improve the top-level design of intelligent sports, (2) optimize the intelligent sports market environment, (3) innovate and upgrade the intelligent sports industry, and (4) build an intelligent sports talent system.

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“…For instance, PVDF-based sensors for pressure sensing [20][21][22], gait detection [23], acoustic detection [24] and sports monitoring [25] have been developed, leveraging their significant advantages in piezoelectric performance, long-term stability, applicability on curved surfaces, and potential for use in dynamic environments. Furthermore, PVDF exhibits very good biocompatibility and is devoid of any odor, taste, or toxicity, rendering it a highly viable option for wearable devices that come into contact with the skin [26,27].…”

Section: Introductionmentioning

confidence: 99%

A Self-Powered Piezoelectric Nanofibrous Membrane as Wearable Tactile Sensor for Human Body Motion Monitoring and Recognition

Yin

Wee

et al. 2023

Adv. Fiber Mater.

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Wearable sensors have drawn vast interest for their convenience to be worn on body to monitor and track body movements or exercise activities in real time. However, wearable electronics rely on powering systems to function. Herein, a self-powered, porous, flexible, hydrophobic and breathable nanofibrous membrane based on electrospun polyvinylidene fluoride (PVDF) nanofiber has been developed as a tactile sensor with low-cost and simple fabrication for human body motion detection and recognition. Specifically, effects of multi-walled carbon nanotubes (CNT) and barium titanate (BTO) as additives to the fiber morphology as well as mechanical and dielectric properties of the piezoelectric nanofiber membrane were investigated. The fabricated BTO@PVDF piezoelectric nanogenerator (PENG) exhibits the high β-phase content and best overall electrical performances, thus selected for the flexible sensing device assembly. Meanwhile, the nanofibrous membrane demonstrated robust tactile sensing performance that the device exhibits durability over 12,000 loading test cycles, holds a fast response time of 82.7 ms, responds to a wide pressure range of 0–5 bar and shows a high relative sensitivity, especially in the small force range of 11.6 V/bar upon pressure applied perpendicular to the surface. Furthermore, when attached on human body, its unique fibrous and flexible structure offers the tactile sensor to present as a health care monitor in a self-powered manner by translating motions of different movements to electrical signals with various patterns or sequences. Graphical Abstract Supplementary Information The online version contains supplementary material available at 10.1007/s42765-023-00282-8.

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Biocompatible CaTiO3-PVDF composite-based piezoelectric nanogenerator for exercise evaluation and energy harvesting

Cited by 83 publications

References 45 publications

Nanofiller‐Induced Enhancement of PVDF Electroactivity for Improved Sensing Performance

Nanofiller‐Induced Enhancement of PVDF Electroactivity for Improved Sensing Performance

Construction and Development Strategy of an Application System of Intelligent Sports in China’s Sports Industry

A Self-Powered Piezoelectric Nanofibrous Membrane as Wearable Tactile Sensor for Human Body Motion Monitoring and Recognition

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