Brillouin microscopy for the evaluation of hair micromechanics and effect of bleaching

Brillouin microscopy is a new form of optical elastography and an emerging technique in mechanobiology biomedical physics. It was applied here to map the viscoelastic properties human hair determine effect bleaching on properties. For samples, longitudinal measurements (i.e. along fibre axis) revealed peaks at 18.7 20.7 GHz location cuticle cortex, respectively. treated with agent, frequency shifts for cortex were 19.7 21.0 GHz, respectively, suggesting that increases modulus and—to minor extent—the modulus. These results demonstrate capability spectroscopy address questions micromechanical validate treatments.