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Proceedings Paper

Far-infrared in vivo signature of human skin by terahertz time-domain spectroscopy using waveform rebuilding technology
Author(s): Xiangjun Li; Jianjun Liu; Zhi Hong
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Paper Abstract

We present terahertz time-domain spectroscopy characterization of human thumb skin in reflection measurement mode with waveform rebuilding technology. The thumb skin contacts one side of a high resistive silicon wafer with 3 mm thick, and here is an orthogonal incidence of the THz pulse putting on the other side of the wafer. We rebuild the time domain signal from silicon-skin interface as a sample signal by the signal from the air-silicon interface as a reference and a Fresnel transform function between them. Material parameters were calculated by minimizing the difference between the measured sample waveform and a rebuilt one in time domain. The double Debye model parameters for the thumb skin were fitted. The method has potential to research complex layer-structures in skin if a precise model is built.

Paper Details

Date Published: 4 November 2010
PDF: 6 pages
Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 785412 (4 November 2010); doi: 10.1117/12.868453
Show Author Affiliations
Xiangjun Li, China Jiliang Univ. (China)
Zhejiang Univ. (China)
Jianjun Liu, China Jiliang Univ. (China)
Zhi Hong, China Jiliang Univ. (China)

Published in SPIE Proceedings Vol. 7854:
Infrared, Millimeter Wave, and Terahertz Technologies
Cunlin Zhang; Xi-Cheng Zhang; Peter H. Siegel; Li He; Sheng-Cai Shi, Editor(s)

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