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Issue 9, 2015
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Self-powered deep brain stimulation via a flexible PIMNT energy harvester

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Abstract

Deep brain stimulation (DBS) is widely used for neural prosthetics and brain–computer interfacing. Thus far in vivo implantation of a battery has been a prerequisite to supply the necessary power. Although flexible energy harvesters have recently emerged as alternatives to batteries, they generate insufficient energy for operating brain stimulation. Herein, we report a high performance flexible piezoelectric energy harvester by enabling self-powered DBS in mice. This device adopts an indium modified crystalline Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 (PIMNT) thin film on a plastic substrate to transform tiny mechanical motions to electricity. With slight bending, it generates an extremely high current reaching 0.57 mA, which satisfies the high threshold current for real-time DBS of the motor cortex and thereby could efficiently induce forearm movements in mice. The PIMNT based flexible energy harvester could open a new avenue for future in vivo healthcare technology using self-powered biomedical devices.

Graphical abstract: Self-powered deep brain stimulation via a flexible PIMNT energy harvester

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Supplementary files

Article information


Submitted
22 May 2015
Accepted
17 Jun 2015
First published
17 Jun 2015

Energy Environ. Sci., 2015,8, 2677-2684
Article type
Paper

Self-powered deep brain stimulation via a flexible PIMNT energy harvester

G. Hwang, Y. Kim, J. Lee, S. Oh, C. K. Jeong, D. Y. Park, J. Ryu, H. Kwon, S. Lee, B. Joung, D. Kim and K. J. Lee, Energy Environ. Sci., 2015, 8, 2677 DOI: 10.1039/C5EE01593F

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