title: Measurements of morphology and refractive indexes on human downy hairs using three-dimensional quantitative phase imaging.
abstract: We present optical measurements of morphology and refractive indexes (RIs) of human downy arm hairs using three-dimensional (3-D) quantitative phase imaging techniques. 3-D RI tomograms and high-resolution two-dimensional synthetic aperture images of individual downy arm hairs were measured using a Mach–Zehnder laser interferometric microscopy equipped with a two-axis galvanometer mirror. From the measured quantitative images, the RIs and morphological parameters of downy hairs were noninvasively quantified including the mean RI, volume, cylinder, and effective radius of individual hairs. In addition, the effects of hydrogen peroxide on individual downy hairs were investigated.
authors.affiliation: Korea Advanced Institute of Science and Technology, Department of Physics, 291 Daehak-Ro Yusung-Gu, Daejeon 305-701, Republic of Korea.
authors.forename: SangYun
authors.initials: S
authors.lastname: Lee
authors.affiliation: Korea Advanced Institute of Science and Technology, Department of Physics, 291 Daehak-Ro Yusung-Gu, Daejeon 305-701, Republic of Korea.
authors.forename: Kyoohyun
authors.initials: K
authors.lastname: Kim
authors.affiliation: Daejeon Dongsin Science High School, 423 Okcheon-Ro Dong-Gu, Daejeon 300-310, Republic of Korea.
authors.forename: Yuhyun
authors.initials: Y
authors.lastname: Lee
authors.affiliation: Daejeon Dongsin Science High School, 423 Okcheon-Ro Dong-Gu, Daejeon 300-310, Republic of Korea.
authors.forename: Sungjin
authors.initials: S
authors.lastname: Park
authors.affiliation: Daejeon Dongsin Science High School, 423 Okcheon-Ro Dong-Gu, Daejeon 300-310, Republic of Korea.
authors.forename: Heejae
authors.initials: H
authors.lastname: Shin
authors.affiliation: Daejeon Dongsin Science High School, 423 Okcheon-Ro Dong-Gu, Daejeon 300-310, Republic of Korea.
authors.forename: Jongwon
authors.initials: J
authors.lastname: Yang
authors.affiliation: Daejeon Dongsin Science High School, 423 Okcheon-Ro Dong-Gu, Daejeon 300-310, Republic of Korea.
authors.forename: Kwanhong
authors.initials: K
authors.lastname: Ko
authors.affiliation: Korea Advanced Institute of Science and Technology, Department of Physics, 291 Daehak-Ro Yusung-Gu, Daejeon 305-701, Republic of Korea.
authors.forename: HyunJoo
authors.initials: H
authors.lastname: Park
authors.affiliation: Korea Advanced Institute of Science and Technology, Department of Physics, 291 Daehak-Ro Yusung-Gu, Daejeon 305-701, Republic of Korea.
authors.forename: YongKeun
authors.initials: Y
authors.lastname: Park
mesh_terms: D000465:Algorithms; D004867:Equipment Design; D006197:Hair / Q000737:chemistry* / Q000187:drug effects; D006801:Humans; D006861:Hydrogen Peroxide / Q000494:pharmacology; D021621:Imaging, Three-Dimensional / Q000379:methods*; D012031:Refractometry / Q000379:methods*; D041622:Tomography, Optical / Q000379:methods
chemical_list: D006861:Hydrogen Peroxide