Peach skin effect: a quasi-superhydrophobic state with high adhesive force

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• 作者：Xianyong Lu ; Hongyan Cai ; Yanzi Wu ; Chao Teng ; Congcong Jiang ; Ying Zhu…
• 关键词：Peach surface ; Quasi ; superhydrophobic ; High adhesive force ; Wenzel’s and Cassie’s state ; ; /li> /li> WenzelCassie/li>
• 刊名：Chinese Science Bulletin
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：60
• 期：4
• 页码：453-459
• 全文大小：848 KB
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• 刊物主题：Science, general; Life Sciences, general; Physics, general; Chemistry/Food Science, general; Earth Sciences, general; Engineering, general;
• 出版者：Springer Berlin Heidelberg
• ISSN：1861-9541

文摘

The surface of a peach is known to exhibit special wettability and adhesion behaviors. We disclose that the peach surface is covered with long and short indumentums. The long indumentums are covered mainly with hydrophobic wax molecules, while the short indumentums are coated mostly with hydrophilic polysaccharides. Thus, the peach surface exhibits a quasi-superhydrophobic property and high adhesive force. A water droplet on the surface of a peach is a quasi-sphere, which is unable to roll off even when the peach is turned upside down. This is defined as the peach skin effect. We present that the quasi-superhydrophobic state with high adhesive force is attributed to the special coexisting Wenzel’s and Cassie’s state for water droplets, thus creating the strong interaction between the water droplet and surface.