Kashyap, M, Torniainen, J, Bertling, K et al. (15 more authors) (2023) Coherent Terahertz laser feedback interferometry for hydration sensing in leaves. Optics Express, 31 (15). pp. 23877-23888. ISSN 1094-4087
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.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This item is protected by copyright. Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Funding Information: | Funder Grant number EPSRC (Engineering and Physical Sciences Research Council) EP/T034246/1 University of Queensland Sustainable Minerals Institute Not Known |
Depositing User: | Symplectic Publications |
Date Deposited: | 29 Jun 2023 14:55 |
Last Modified: | 01 Aug 2023 15:44 |
Status: | Published |
Publisher: | Optica |
Identification Number: | 10.1364/oe.490217 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:200713 |