Yu, Di, Zhipeng Zheng, Jiadong Liu, Hongyuan Xiao, Geng Huangfu, and Yiping Guo. “Superflexible and Lead-Free Piezoelectric Nanogenerator As a Highly Sensitive Self-Powered Sensor for Human Motion Monitoring”. Nano-Micro Letters 13 (April 30, 2021): 117. Accessed April 19, 2024. https://www.nmlett.org/index.php/nml/article/view/883.