Guo, Xinge, Luwei Wang, Zhenyang Jin, and Chengkuo Lee. “A Multifunctional Hydrogel With Multimodal Self-Powered Sensing Capability and Stable Direct Current Output for Outdoor Plant Monitoring Systems”. Nano-Micro Letters 17 (November 27, 2024): 76. Accessed March 31, 2025. https://nmlett.org/index.php/nml/article/view/1858.