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
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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
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Sara V. Fernandez,David Sadat,Farita Tasnim,Daniel Acosta,Laura Schwendeman,Shirin Shahsavari,Canan Dagdeviren +6 more
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Inner Workings: Self-powered biomedical devices tap into the body’s movements
TL;DR: A flexible sliver of polymer placed between the heart and the fibrous wall that encases it converted the physical strain of its movement into electrical energy stashed into a capacitor,effectively using the heart’s own mechanical motions to power an implanted pacemaker.
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Effects of Orientations on Efficiency of Energy Harvesting from Heart Motion Using Ultrathin Flexible Piezoelectric Devices
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An Implantable Biomechanical Energy Harvester for Animal Monitoring Devices
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TL;DR: In this article , a biomechanical energy harvester that uses a Macro Fiber Composite (MFC) piezoelectric beam to harvest the mechanical energy from animals' body bending movements as the power source for implantable and wearable devices was developed.
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