Terahertz time-domain spectroscopy for non-invasive assessment of water content in biological samples
Borovkova, Mariia; Khodzitsky, Mikhail; Demchenko, Petr; Cherkasova, Olga; Popov, Alexey; Meglinski, Igor (2018-04-20)
Mariia Borovkova, Mikhail Khodzitsky, Petr Demchenko, Olga Cherkasova, Alexey Popov, and Igor Meglinski, "Terahertz time-domain spectroscopy for non-invasive assessment of water content in biological samples," Biomed. Opt. Express 9, 2266-2276 (2018)
© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. https://www.osapublishing.org/library/license_v1.cfm#VOR-OA
We apply terahertz time-domain spectroscopy for the quantitative non-invasive assessment of the water content in biological samples, such as Carpinus caroliniana tree leaves and pork muscles. The developed experimental terahertz time-domain spectroscopy system operates both in transmission and reflection modes. The Landau-Looyenga-Lifshitz-based model is used for the calculation of the water concentration within the samples. The results of the water concentration measurements are compared with the results of the gravimetric measurements. The obtained results show that the water content in biological samples can be measured non-invasively, with a high accuracy, utilizing terahertz waves in transmission and reflection modes.
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