13 May 2011 THz characterization of hydrated and anhydrous materials
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Abstract
The characterization of anhydrous and hydrated forms of materials is of great importance to science and industry. Water content poses difficulties for successful identification of the material structure by THz radiation. However, biological tissues and hydrated forms of nonorganic substances still may be investigated by THz radiation. This paper outlines the range of possibilities of the above characterization, as well as provides analysis of the physical mechanism that allows or prevents penetration of THz waves through the substance. THz-TDS is used to measure the parameters of the characterization of anhydrous and hydrated forms of organic and nonorganic samples. Mathematical methods (such as prediction models of time-series analysis) are used to help identifying the absorption coefficient and other parameters of interest. The discovered dependencies allow designing techniques for material identification/characterization (e.g. of drugs, explosives, etc. that may have water content). The results are provided.
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Andre Sokolnikov, "THz characterization of hydrated and anhydrous materials", Proc. SPIE 8031, Micro- and Nanotechnology Sensors, Systems, and Applications III, 80310G (13 May 2011); doi: 10.1117/12.885646; https://doi.org/10.1117/12.885646
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