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Chikishev A.Yu. Fedorkova M.V. Mikhalchik E.V. Brandt N.N., Smolina N.V.
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24th International Laser Physic Workshop
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Shanghai, China, 21-25 august 2015,
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Приглашенный доклад на международной конференции
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Appearance and quality of hair depend on the conformation of structural proteins – keratins. Under the influence of UV spectral part of the solar light, hair become pale and lose mechanical strength. It is known that the UV irradiation causes cleavage of inter- and intramolecular disulfide bonds. In this work, we employ confocal Raman microspectroscopy to evaluate the effect of UV radiation on S-S and C-S bonds in the vicinity of hair surface and in the central part of hair (medulla). We study the slices of silver hair from one healthy donor. Hair diameter is about 50 mkm. The samples are divided into two parts. One of them is used as a control. The other one is irradiated with the help of an IPL-K150 UV lamp during 2 hours. The wavelength of the most high-frequency emission band of the lamp is about 250 nm. To measure Raman spectra, we use a Thermo Scientific Raman DXR confocal microscope. The spectra are processed as described in.
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