| 초록 |
The practical use of biomechanical energy has been demonstrated in flexible single crystal PMN-PZT energy harvesters. We show a self-powered wireless data transfer activated by in vivo biomechanical energy derived from cardiac movement in a large animal model using a flexible piezoelectric energy harvester realized by monocrystalline PMN-PZT. In contraction and relaxation of the pig heart, the single crystal flexible energy harvester generated an open circuit voltage of 17.8 V and a short circuit current of 1.74 μA, 4.45 and 17.4 times higher than previously reported in vivo. Piezoelectric Energy Harvesting. Various cell viability tests and histological methods were performed to show the biocompatibility of the PMN-PZT flexible energy harvester, which showed no signs of biological damage and inflammatory response. Finally, it was able to collect pig heartbeat energy and wirelessly transmit communication data using a self-driven system. It has also been visually proven to repeatedly turn the bulb on and off over a distance of about 5 meters without any other power source. This successful self-powered wireless data transmission demonstrates its potential applications in implantable biomedical devices using direct biomechanical energy. |
