Conformal piezoelectric energy harvesting and storage from motions of the heart, lung, and diaphragm
Canan Dagdeviren,Byung Duk Yang,Yewang Su,Yewang Su,Phat L. Tran,Pauline Joe,Eric K. Anderson,Jing Xia,Jing Xia,Vijay A. Doraiswamy,Behrooz Dehdashti,Xue Feng,Bingwei Lu,Robert S. Poston,Zain Khalpey,Roozbeh Ghaffari,Yonggang Huang,Marvin J. Slepian,John A. Rogers +18 more
TLDR
Advanced materials and devices are reported that enable high-efficiency mechanical-to-electrical energy conversion from the natural contractile and relaxation motions of the heart, lung, and diaphragm, demonstrated in several different animal models, each of which has organs with sizes that approach human scales.Abstract:
Here, we report advanced materials and devices that enable high-efficiency mechanical-to-electrical energy conversion from the natural contractile and relaxation motions of the heart, lung, and diaphragm, demonstrated in several different animal models, each of which has organs with sizes that approach human scales. A cointegrated collection of such energy-harvesting elements with rectifiers and microbatteries provides an entire flexible system, capable of viable integration with the beating heart via medical sutures and operation with efficiencies of ∼2%. Additional experiments, computational models, and results in multilayer configurations capture the key behaviors, illuminate essential design aspects, and offer sufficient power outputs for operation of pacemakers, with or without battery assist.read more
Citations
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Pure OPM nanofibers with high piezoelectricity designed for energy harvesting in vitro and in vivo
Tong Li,Zhang-Qi Feng,Zhang-Qi Feng,Zhang-Qi Feng,Yan Ke,Tao Yuan,Wuting Wei,Yuan Xu,Chao Wang,Ting Wang,Ting Wang,Wei Dong,Jie Zheng +12 more
TL;DR: It is demonstrated that the PVDF nanofibers have outstanding biocompatibility and can provide a spontaneous microelectronic stimulation effect to improve the growth of nerve cells and may serve as a powerful tool for developing future flexible force-sensitive microelectric devices and generators for applications in bioelectronics and biomedicine.
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Geometric nonlinear distributed parameter model for cantilever-beam piezoelectric energy harvesters and structural dimension analysis for galloping mode:
TL;DR: In this paper, the effects of structural dimension on the performance of cantilever-beam piezoelectric energy harvesters were investigated using the extended Hamilton's principle.
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Direct Visualization of Cross-Sectional Strain Distribution in Flexible Devices.
TL;DR: A novel experimental method to directly visualize cross-sectional strain distribution in the thin flexible devices is proposed and generation of multiple neutral planes is clearly visualized for a trilayer structure with a very soft adhesive midlayer.
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Ferroelectric and piezoelectric properties of KNbO3films deposited on flexible organic substrate by hydrothermal method
Takahisa Shiraishi,Noriyuki Kaneko,Mutsuo Ishikawa,Mutsuo Ishikawa,Minoru Kurosawa,Hiroshi Uchida,Hiroshi Funakubo +6 more
TL;DR: In this article, a polycrystalline KNbO3 phase was determined at temperature as low as 120 °C in films deposited on (100)cSrRuO3/Pt/Ti/polysulfone substrates, and their ferroelectricity and piezoelectricity were observed.
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Characterization and Modeling of Meshed Electrodes on Free Standing Polyvilylidene Difluoride (PVDF) Films for Enhanced Pyroelectric Energy Harvesting
TL;DR: It is shown that, for the meshed electrode geometries considered in this paper, the polarization-field and current-field characteristics and device capacitance are unaffected since the fringing fields were generally small; this is verified using numerical simulations and comparison with experimental measurements.
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