Theoretical Explanation of the Photoswitchable Superhydrophobicity of Diarylethene Microcrystalline Surfaces

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• 作者：Naoki Nishikawa ; Hiroyuki Mayama ; Yoshimune Nonomura ; Noriko Fujinaga ; Satoshi Yokojima ; Shinichiro Nakamura ; Kingo Uchida
• 刊名：Langmuir
• 出版年：2014
• 出版时间：September 9, 2014
• 年：2014
• 卷：30
• 期：35
• 页码：10643-10650
• 全文大小：453K
• ISSN：1520-5827

文摘

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.