title: Theoretical explanation of the photoswitchable superhydrophobicity of diarylethene microcrystalline surfaces.
abstract: Two types of superhydrophobic surfaces which show lotus and petal effects were induced on photochromic diarylethene microcrystalline surfaces by UV and visible light irradiation and temperature control. On the surfaces showing the lotus effect, a low-adhesion superhydrophobic property is attributed to the surface structure being covered with densely standing needle-shaped crystals of the closed-ring isomer. On surfaces showing the petal effect, a high-adhesion superhydrophobic surface consists of fine needle-shaped crystals with high density together with a few rod-shaped crystals, where an invasion phenomenon occurs between these rod-shaped crystals. Furthermore, the different superhydrophobic properties of the surfaces are theoretically explained using multipillar surface models.
authors.affiliation: Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University , Seta, Otsu 520-2194, Japan.
authors.forename: Naoki
authors.initials: N
authors.lastname: Nishikawa
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Mayama
authors.forename: Yoshimune
authors.initials: Y
authors.lastname: Nonomura
authors.forename: Noriko
authors.initials: N
authors.lastname: Fujinaga
authors.forename: Satoshi
authors.initials: S
authors.lastname: Yokojima
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Nakamura
authors.forename: Kingo
authors.initials: K
authors.lastname: Uchida
mesh_terms: D057927:Hydrophobic and Hydrophilic Interactions; D008027:Light; D013499:Surface Properties; D017155:Wettability