27 March 2015 Flexible patch composed of PZT thin-film on stainless steel foil for energy harvesting from low-frequency human motions
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Abstract
To harvest energy from human motion and generate power for the emerging wearable devices, energy harvesters are required to work at very low frequency. There are several studies based on energy harvesting through human gait, which can generate significant power. However, when wearing these kind of devices, additional effort may be required and the user may feel uncomfortable when moving. The energy harvester developed here is composed of a 10 μm PZT thin-film deposited on 50 μm thick stainless steel foil by the aerosol deposition method. The PZT layer and the stainless steel foil are both very thin, thus the patch is highly flexible. The patch can be attached on the skin to harvester power through human motions such as the expansion of the chest region while breathing. The energy harvester will first be tested with a moving stage for power output measurements. The energy density can be determined for different deformation ranges and frequencies. The fabrication processes and testing results will all be detailed in this paper.
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Yin Jie Wang, Yin Jie Wang, Chao Ting Chen, Chao Ting Chen, Jiun Jung Chen, Jiun Jung Chen, Sou Peng Yeh, Sou Peng Yeh, Wen Jong Wu, Wen Jong Wu, } "Flexible patch composed of PZT thin-film on stainless steel foil for energy harvesting from low-frequency human motions", Proc. SPIE 9435, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2015, 94353D (27 March 2015); doi: 10.1117/12.2084782; https://doi.org/10.1117/12.2084782
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