期刊
出版社
IEEE
DOI: 10.1109/transducers.2019.8808562
关键词
Soil water potential; agricultural sensor; plant; in-situ measurement
资金
- Advanced Research Projects Agency-Energy (ARPA-E), U.S. Department of Energy [DE-AR0000824]
- United State Department of Agriculture (USDA) [2017-67013-26463]
- National Science Foundation [IOS-1650182]
- NIFA [914669, 2017-67013-26463] Funding Source: Federal RePORTER
This paper presents a miniature embedded sensor for direct, in-situ, continuous monitoring of sod water potential variations during the growth of plants. The sensor has a small form factor due to the seamless integration of an ultra-shallow water reservoir, a nanoporous ceramic disk, and a miniature optical displacement detection unit. By increasing the hydrophilicity and smoothness of the inner surface of the water reservoir, a high cavitation pressure was obtained. The sensor makes it possible to conduct continuous, in-situ measurement of soil water potential near the roots of plant for almost two weeks.
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