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. 2023 Nov 6;28(11):116501. doi: 10.1117/1.JBO.28.11.116501

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© 2023 The Authors

Published by SPIE under a Creative Commons Attribution 4.0 International License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Fig. 5 — The finite-element analysis of the influence of hair geometric size on the infrared transmission. (a) The hair infrared transmission model used in the simulation. (b), (c) The spatial mappings of light intensity profiles at two typical wavenumbers 1735 and $963 {cm}^{- 1}$ . (d)–(f) The evolution of transmission spectra as the geometric size of the cuticle, cortex, and medulla varies.