Measuring absorption coefficient of excised animal skin exposed to THz radiation

Alireza Lajevardipour; Zoltan Vilagosh; Andrew W. Wood

doi:10.1117/12.2539879

31 December 2019 Measuring absorption coefficient of excised animal skin exposed to THz radiation

Alireza Lajevardipour, Zoltan Vilagosh, Andrew W. Wood

Proceedings Volume 11201, SPIE Micro + Nano Materials, Devices, and Applications 2019; 112011W (2019) https://doi.org/10.1117/12.2539879
Event: ANZCOP, 2019, Melbourne, Australia

Abstract

By employing a FTIR spectrometer aligned for THz beam in the Australian Synchrotron, we measured absorption coefficients of different toad skin patches. Skin samples were precisely excised from cane toad and prepared for experiments in dried and fresh states. The transmission and attenuated total reflection modes were designated to measure absorption coefficients through mathematical relations between transmittance and absorption. The transmission study shows that in the frequency range of 0.8 to around 3 THz the dark part of toad skin demonstrates higher absorption than the pale part in both dried and fresh states while it is reversed at higher frequencies. Both dark and pale skin patches perform much less absorption than distilled water. ATR data corroborates the same result in the frequency range of 0.75 to 0.95 THz.

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Alireza Lajevardipour, Zoltan Vilagosh, and Andrew W. Wood "Measuring absorption coefficient of excised animal skin exposed to THz radiation", Proc. SPIE 11201, SPIE Micro + Nano Materials, Devices, and Applications 2019, 112011W (31 December 2019); https://doi.org/10.1117/12.2539879

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KEYWORDS

Skin

Terahertz radiation

Absorption

Synchrotrons

FT-IR spectroscopy

Interfaces

Refractive index

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