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

Geon Tae Hwang, Youngsoo Kim, Jeong Ho Lee, Sekwon Oh, Chang Kyu Jeong, Dae Yong Park, Jungho Ryu, Hyuksang Kwon, Sang Goo Lee, Boyoung Joung, Daesoo Kim, Keon Jae Lee

Research output: Contribution to journalArticlepeer-review

184 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)2677-2684
Number of pages8
JournalEnergy and Environmental Science
Issue number9
Publication statusPublished - 2015 Sept 1

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2015.

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution


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