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Growth Inhibition and Transient Temperature Measurement of Laser-Irradiated Hair Fibers and Follicles

Published

Author(s)

L K. Iwaki, T Heimer, Edwin J. Heilweil, P A. Manos

Abstract

Temperature changes, infrared (IR) images, and heat propagation kinetics of laser irradiated hair fibers and live follicles were measured using a cooled InSb focal plane array detector. Pulsed irradiation of different colored hair follicles under controlled fluence conditions produces catagenic induction with differences in maximum attained temperature. Fibers rich in eumelanin (black/brown and dark brown) produced maximum IR temperatures of 400K and 374K, while hair containing pheomelanin (blond, gray and red fibers) yielded 315K, 310K and 301K, respectively. Maximum temperatures occurred at the end of 50 ms laser pulses with emission decays of several hundred milliseconds.
Citation
Optics Letters

Keywords

hair fibers, hair follicles, heat propagation, infrared cameras, infrared emission, IR focal planes, laser heating, temperature dynamics, time-resolved infrared

Citation

Iwaki, L. , Heimer, T. , Heilweil, E. and Manos, P. (2000), Growth Inhibition and Transient Temperature Measurement of Laser-Irradiated Hair Fibers and Follicles, Optics Letters (Accessed July 22, 2024)

Issues

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Created December 31, 1999, Updated October 12, 2021