Journal
NANO LETTERS
Volume 11, Issue 6, Pages 2572-2577Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl201505c
Keywords
Nanogenerator; ZnO; wireless data transimission
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Funding
- DARPA [HR0011-09-C-0142]
- BES DOE [DE-FG02-07ER46394]
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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 mu A (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.
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