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Detailed Program
Paper Number : PI-P05
Time Frame : 12:00~13:30
Presentation Date : Thursday, 27, November
Session Name : Piezoelectric Device & Application
Session Chair 1# : -
Session Chair 2# : -
Flexible Single Crystalline PMN-PT Thin Film Energy Harvester and Its Application for Self-powered Cardiac Pacemaker
Mr. Geon Tae Hwang
KAIST
Artificial cardiac pacemaker is widely used to maintain an adequate heart rate. The repetitive surgery are required to replace the pacemakers due to limited lifespan of batteries. Recharging battery in a human body and adopting self-powered nerve stimulation are reasonable solution for solving the problem. This paper describes flexible single crystal PMN-PT thin film nanogenerator (NG) as a high-performance flexible energy harvester for application of self-powered cardiac pacemaker. The NG device generates open-circuit voltage of 8.2 V and short-circuit current of 0.22 mA which is the highest output current among previously reported piezoelectric ceramic-based flexible NGs. We successfully drive 50 LEDs and charge batteries by electric energy harvested from the thin film NG. Finally, the flexible PMN-PT NG is utilized to make direct stimulation of cardiac nerve for artificial heartbeat without external power source.
Acknowledgements : This work was supported by the Basic Science Research Program (grant code: NRF-2012R1A2A1A03010415) and Center for Integrated Smart Sensors as Global Frontier Project (CISS-2012M3A6A6054187) funded by the Korea government (MSIP) through the National Research Foundation of Korea (NRF). This work was also supported by the Small and Medium Business Administration (SMBA) in Korea under contract S2042880.