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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An Epidermal Stimulation and Sensing Platform for Sensorimotor Prosthetic Control, Management of Lower Back Exertion, and Electrical Muscle Activation
Baoxing Xu,Baoxing Xu,Aadeel Akhtar,Yuhao Liu,Hang Chen,Hang Chen,Woon-Hong Yeo,Woon-Hong Yeo,Sung Ii Park,Brandon Boyce,Hyunjin Kim,Jiwoo Yu,Hsin Yen Lai,Sung-Young Jung,Yuhao Zhou,Jeonghyun Kim,Seongkyu Cho,Yonggang Huang,Timothy Bretl,John A. Rogers +19 more
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Paper/Carbon Nanotube-Based Wearable Pressure Sensor for Physiological Signal Acquisition and Soft Robotic Skin
Zhaoyao Zhan,Rongzhou Lin,Van-Thai Tran,Jianing An,Yuefan Wei,Hejun Du,Tuan Tran,Wenqiang Lu +7 more
TL;DR: A flexible, wearable pressure sensor fabricated based on novel single-wall carbon nanotube /tissue paper showed superior performance with concurrence of several merits, including high sensitivity for a broad pressure range and an ultralow energy consumption level.
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Implantable Energy-Harvesting Devices.
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Self-powered deep brain stimulation via a flexible PIMNT energy harvester
Geon-Tae Hwang,Young-Soo Kim,Jeong Ho Lee,SeKwon Oh,Chang Kyu Jeong,Dae Yong Park,Jungho Ryu,Hyuk-Sang Kwon,Sang Goo Lee,Boyoung Joung,Daesoo Kim,Keon Jae Lee +11 more
TL;DR: In this paper, a flexible piezoelectric energy harvester was used to enable self-powered DBS in mice, which achieved an extremely high current reaching 0.57 mA, which satisfies the high threshold current for real-time DBS of the motor cortex.
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Stretchable piezoelectric energy harvesters and self-powered sensors for wearable and implantable devices
TL;DR: This review presents an overview of the recent developments in new intrinsically stretchable piezoelectric materials and rigid inorganic pieZoelectrics materials with novel stretchable structures for flexible and stretchable PiezoeLECTric sensors and energy harvesters.
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