1. A piezoelectric spring pendulum oscillator used for multi-directional and ultra-low frequency vibration energy harvesting. (1st December 2018) Authors: Wu, Yipeng; Qiu, Jinhao; Zhou, Shengpeng; Ji, Hongli; Chen, Yang; Li, Sen Journal: Applied energy Issue: Volume 231(2018) Page Start: 600 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗