[16a-B2-1~13] 3.9 Terahertz technologies

△ [16a-B2-3] In-vitro penetration assessments of the cosmetic liquid in the bird skin by terahertz-Time-of-Flight method

〇Tsubasa Arisawa¹, Taiga Morimoto¹, Kenji Sakai¹, Toshihiko Kiwa¹, Keiji Tsukada¹ (1.Okayama Univ.)

Keywords:terahertz, femtosecond laser, time of flight

At a cosmetic industry, an evaluation of penetration speed and/or depth of cosmetics using alternative skin samples (i.e., do not use animals) has been necessary. In our group, a sensing plate, which can generate THz pulses, has been developed. Here, the sensing plate was proposed in order to evaluate the penetration of cosmetic liquids in a bird skin sample, which has a multilayer structure, by applying a terahertz-Time-of-Flight method. In this evaluation method, the penetration speed and/or depth in the resected skin sample can be estimated.