title: Fractal Surfaces of Molecular Crystals Mimicking Lotus Leaf with Phototunable Double Roughness Structures.
abstract: Double roughness structure, the origin of the lotus effect of natural lotus leaf, was successfully reproduced on a diarylethene microcrystalline surface. Static superwater-repellency and dynamic water-drop-bouncing were observed on the surface, in the manner of natural lotus leaves. Double roughness structure was essential for water-drop-bouncing. This ability was not observed on a single roughness microcrystalline surface showing the lotus effect of the same diarylethene derivative. The double roughness structure was reversibly controlled by alternating irradiation with UV and visible light.
authors.affiliation: Department of Materials Chemistry, Ryukoku University , Seta, Otsu, Shiga 520-2194, Japan.
authors.forename: Ryo
authors.initials: R
authors.lastname: Nishimura
authors.affiliation: Department of Materials Chemistry, Ryukoku University , Seta, Otsu, Shiga 520-2194, Japan.
authors.forename: Kengo
authors.initials: K
authors.lastname: Hyodo
authors.affiliation: Department of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University , 4-3-16, Jo-nan, Yonezawa, Yamagata 992-8510, Japan.
authors.forename: Haruna
authors.initials: H
authors.lastname: Sawaguchi
authors.affiliation: Department of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University , 4-3-16, Jo-nan, Yonezawa, Yamagata 992-8510, Japan.
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Yamamoto
authors.affiliation: Department of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University , 4-3-16, Jo-nan, Yonezawa, Yamagata 992-8510, Japan.
authors.forename: Yoshimune
authors.initials: Y
authors.lastname: Nonomura
authors.affiliation: Department of Chemistry, Asahikawa Medical University , 2-1-1-1, Midorigaoka-higashi, Asahikawa, Hokkaido 078-8510, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Mayama
authors.affiliation: School of Pharmacy, Tokyo University of Pharmacy and Life Sciences , 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan.|RIKEN Innovation Center, Nakamura Laboratory , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Yokojima
authors.affiliation: RIKEN Innovation Center, Nakamura Laboratory , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Nakamura
authors.affiliation: Department of Materials Chemistry, Ryukoku University , Seta, Otsu, Shiga 520-2194, Japan.
authors.forename: Kingo
authors.initials: K
authors.lastname: Uchida
mesh_terms: D040761:Biomimetic Materials / Q000737:chemistry; D003460:Crystallization; D017709:Fractals; D008027:Light; D000070116:Lotus / Q000033:anatomy & histology*; D008855:Microscopy, Electron, Scanning; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry; D018515:Plant Leaves / Q000033:anatomy & histology*; D011312:Pressure; D013499:Surface Properties; D014466:Ultraviolet Rays; D014867:Water / Q000737:chemistry; D017155:Wettability
chemical_list: D014867:Water