Additional surgeries for implantable biomedical devices are inevitable to replace discharged batteries, but repeated surgeries can be a risk to patients, causing bleeding, inflammation, and infection. Therefore, developing self-powered implantable devices is essential to reduce the patient's physical/psychological pain and financial burden. Although wireless communication plays a critical role in implantable biomedical devices that contain the function of data transmitting, it has never been integrated with in vivo piezoelectric self-powered system due to its high-level power consumption (microwatt-scale). Here, wireless communication, which is essential for a ubiquitous healthcare system, is successfully driven with in vivo energy harvesting enabled by high-performance single-crystalline (1 − x)Pb(Mg1/3Nb2/3)O3−(x)Pb(Zr,Ti)O3 (PMN-PZT). The PMN-PZT energy harvester generates an open-circuit voltage of 17.8 V and a short-circuit current of 1.74 µA from porcine heartbeats, which are greater by a factor of 4.45 and 17.5 than those of previously reported in vivo piezoelectric energy harvesting. The energy harvester exhibits excellent biocompatibility, which implies the possibility for applying the device to biomedical applications.
Bibliographical noteFunding Information:
D.H.K., H.J.S., and H.L. contributed equally to this work. This work was supported by research grants from the Korean Healthcare Technology R&D Project funded by the Ministry of Health & Welfare (Grant Nos. HI16C0058 and HI15C1200), and the by Nano Material Technology Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (MSIP) (Grant No. 2016M3A7B4910636). This was also supported by the Global Frontier R&D Program on Center for Integrated Smart Sensors (Grant No. CISS-2016M3A6A6929958) funded by the MSIP through NRF of Korea government, and by the Wearable Platform Materials Technology Center (WMC) funded by the NRF Grant of the Korean Government (MSIP) (Grant No. 2016R1A5A1009926).
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics