Affiliation:
1. The University of Queensland
2. Indian Institute of Technology Delhi
3. The University of Queensland – Indian Institute of Technology
4. The University of Leeds
Abstract
The response of terahertz to the presence of water content makes it an ideal analytical tool for hydration monitoring in agricultural applications. This study reports on the feasibility of terahertz sensing for monitoring the hydration level of freshly harvested leaves of Celtis sinensis by employing a imaging platform based on quantum cascade lasers and laser feedback interferometry. The imaging platform produces wide angle high resolution terahertz amplitude and phase images of the leaves at high frame rates allowing monitoring of dynamic water transport and other changes across the whole leaf. The complementary information in the resulting images was fed to a machine learning model aiming to predict relative water content from a single frame. The model was used to predict the change in hydration level over time. Results of the study suggest that the technique could have substantial potential in agricultural applications.
Funder
Engineering and Physical Sciences Research Council
Department of Atomic Energy, Government of India
Defence Research and Development Organisation
Australian Research Council
Subject
Atomic and Molecular Physics, and Optics
Cited by
1 articles.
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