Self-Powered System with Wireless Data Transmission

作者：Youfan Hu, Yan Zhang, Chen Xu, Long Lin, Robert L. Snyder, Zhong Lin Wang · 发表于：Nano Letters · 年份：2011 · DOI：10.1021/nl201505c · 被引用次数：430 · 研究领域：Advanced Sensor and Energy Harvesting Materials、Innovative Energy Harvesting Technologies、Energy Harvesting in Wireless Networks

We demonstrate the first self-powered system driven by a nanogenerator (NG) that works wirelessly and independently for long-distance data transmission. The NG was made of a free cantilever beam that consisted of a five-layer structure: a flexible polymer substrate, ZnO nanowire textured films on its top and bottom surfaces, and electrodes on the surfaces. When it was strained to 0.12% at a strain rate of 3.56% S(-1), the measured output voltage reached 10 V, and the output current exceeded 0.6 μA (corresponding power density 10 mW/cm(3)). A system was built up by integrating a NG, rectification circuit, capacitor for energy storage, sensor, and RF data transmitter. Wireless signals sent out by the system were detected by a commercial radio at a distance of 5-10 m. This study proves the feasibility of using ZnO nanowire NGs for building self-powered systems, and its potential application in wireless biosensing, environmental/infrastructure monitoring, sensor networks, personal electronics, and even national security.