Title :
Effective permittivity and scattering model for the evaluation of the leaf water status
Author :
Scheller, M. ; Jördens, C. ; Breitenstein, B. ; Selmar, D. ; Koch, M.
Author_Institution :
Inst. fur Hochfrequenztech., Tech. Univ. Braunschweig, Braunschweig
Abstract :
An electromagnetic model of plant leaves at THz frequencies is presented. It allows for the determination of the leaf water status. The model bases on an effective medium theory and extends the model by Landau, Lifshitz, and Looyenga. The influence of scattering, which is dominant at higher frequencies, is described by a Rayleigh roughness factor. Results of THz time-domain spectroscopy measurements on Coffea arabica leaves are used to validate the model.
Keywords :
Rayleigh scattering; botany; permittivity; time-domain analysis; Coffea arabica leaves; Rayleigh roughness factor; effective permittivity; electromagnetic model; leaf water status; time-domain spectroscopy; Absorption; Biological system modeling; Electromagnetic scattering; Frequency; Optical scattering; Particle scattering; Permittivity; Rayleigh scattering; Solids; Spectroscopy;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves, 2008. IRMMW-THz 2008. 33rd International Conference on
Conference_Location :
Pasadena, CA
Print_ISBN :
978-1-4244-2119-0
Electronic_ISBN :
978-1-4244-2120-6
DOI :
10.1109/ICIMW.2008.4665826
