Terahertz time-domain spectroscopy of crushed wheat grain

Terahertz time-domain spectroscopy of crushed wheat grain

The terahertz time-domain spectroscopy (THz-TDS) is used to measure absorption spectra in crushed wheat grain over the frequency range of 0.1-2.0 THz. A number of well resolved absorption peaks are observed for dry, 12%, 14% and 18% moisture content levels. Subtracting the transmission signal spectr...

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Hauptverfasser: Chua, H.S., Obradovic, J., Haigh, A.D., Upadhya, P.C., Hirsch, O., Crawley, D., Gibson, A.A.P., Gladden, L.F., Linfield, E.H.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Absorption
Laser excitation
Moisture measurement
Optical beams
Optical pulse generation
Permittivity measurement
Spectroscopy
Structural beams
Submillimeter wave measurements
Time domain analysis
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Beschreibung
Zusammenfassung:The terahertz time-domain spectroscopy (THz-TDS) is used to measure absorption spectra in crushed wheat grain over the frequency range of 0.1-2.0 THz. A number of well resolved absorption peaks are observed for dry, 12%, 14% and 18% moisture content levels. Subtracting the transmission signal spectra of the dry flour from that of the wetted flour provides a calibrated result which relates attenuation to moisture content level.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2005.1517162