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Measurements of leaf water content using terahertz radiation

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Hadjiloucas, S. ORCID: https://orcid.org/0000-0003-2380-6114, Karatzas, L. S. and Bowen, J. W. (1999) Measurements of leaf water content using terahertz radiation. IEEE Transactions on Microwave Theory and Techniques, 47 (2). pp. 142-149. ISSN 0018-9480

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To link to this item DOI: 10.1109/22.744288

Abstract/Summary

A novel technique for the noninvasive continuous measurement of leaf water content is presented. The technique is based on transmission measurements of terahertz radiation with a null-balance quasi-optical transmissometer operating at 94 GHz. A model for the propagation of terahertz radiation through leaves is presented. This, in conjunction with leaf thickness information determined separately, may be used to quantitatively relate transmittance measurements to leaf water content. Measurements using a dispersive Fourier transform spectrometer in the range of 100 GHz-500 GHz using Phormium tenax and Fatsia japonica leaves are also reported.

Item Type:Article
Refereed:Yes
Divisions:Life Sciences > School of Biological Sciences > Department of Bio-Engineering
ID Code:18897
Uncontrolled Keywords:100 to 500 GHz, 94 GHz, Fatsia japonica leaves, IMPATT oscillator, Jones matrix analysis, Mach-Zehnder interferometer, Martin-Puplett interferometer, Phormium tenax leaves, dispersive Fourier transform spectrometer, hybrid interferometer, leaf osmotic potential, leaf thickness, leaf water content, noninvasive continuous measurement, null-balance quasi-optical transmissometer, pseudocoherence, terahertz radiation, transmission measurements
Publisher:IEEE
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