Version 2 2016-06-07, 19:25Version 2 2016-06-07, 19:25
Version 1 2016-06-06, 13:50Version 1 2016-06-06, 13:50
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posted on 2016-06-07, 19:25authored byQiang Zheng, Hao Zhang, Bojing Shi, Xiang Xue, Zhuo Liu, Yiming Jin, Ye Ma, Yang Zou, Xinxin Wang, Zhao An, Wei Tang, Wei Zhang, Fan Yang, Yang Liu, Xilong Lang, Zhiyun Xu, Zhou Li, Zhong Lin Wang
Harvesting
biomechanical energy in vivo is an important route
in obtaining sustainable electric energy for powering implantable
medical devices. Here, we demonstrate an innovative implantable triboelectric
nanogenerator (iTENG) for in vivo biomechanical energy
harvesting. Driven by the heartbeat of adult swine, the output voltage
and the corresponding current were improved by factors of 3.5 and
25, respectively, compared with the reported in vivo output performance of biomechanical energy conversion devices. In
addition, the in vivo evaluation of the iTENG was
demonstrated for over 72 h of implantation, during which the iTENG
generated electricity continuously in the active animal. Due to its
excellent in vivo performance, a self-powered wireless
transmission system was fabricated for real-time wireless cardiac
monitoring. Given its outstanding in vivo output
and stability, iTENG can be applied not only to power implantable
medical devices but also possibly to fabricate a self-powered, wireless
healthcare monitoring system.