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Biomimetic fabrication and characterization of an artificial rice leaf surface with anisotropic wetting

分类：S567.231[农业科学—中草药栽培;农业科学—作物学] V241.505[航空宇航科学与技术—飞行器设计;航空宇航科学技术]
作者机构：[1]State Key Laboratory on Integrated Optoelectronics,College of Electronic Science and Engineering,Jilin University,Changchun 130012,China
相关基金：supported by the National Natural Science Foundation of China（60525412,61077002 and 90923037）

作者： YAO Jia WANG JianNan YU YanHao YANG Han XU Ying[1]

关键词：动态润湿性, 各向异性, 叶表面, 稻叶, 人工, 仿生, 快速制造, 表征, anisotropic wettability； superhydrophobic surface； template transfer； rice leaf surface； functional material； sliding angle

中文摘要：

在自然，米饭叶子展出特殊各向异性的滑动能力。尽管研究人员们成功了制作人工的米饭叶结构并且认识到叶表面的 wettability 功能，这些方法使用了到日期是复杂的并且不与大区域允许表面的制造。此处，我们采用了一种简单技术 - 二个步骤制作 biomimetic 米饭的软转移叶。制作表面很好复制了米饭叶表面的结构并且展出了类似于真实米饭叶表面的一个静态的 superhydrophobic 性质。以它的动态 wettability，它清楚地展出了一个各向异性的滑动性质。系统的大小证明与静脉方向平行、垂直的滑动角度是 25  ?????????? 浮 ?? 桰瑯牯獥潰獮 ????????????  ??? 吗？？

英文摘要：

In nature,rice leaves exhibit special anisotropic sliding capabilities.Although researchers have succeeded in fabricating artificial rice leaf structures and realizing the wettability function of the leaf surface,these methods used to date are complex and do not allow the fabrication of surfaces with large area.Herein,we adopted a simple technology—two steps soft transfer to fabricate biomimetic rice leaf.The fabricated surface well reproduced the structures of the rice leaf surface and exhibited a static superhydrophobic property similar to that of the real rice leaf surface.In terms of its dynamic wettability,it clearly exhibited an anisotropic sliding property.Systematic measurements showed that the sliding angles parallel and perpendicular with the vein direction were 25° and 40°,respectively.The method was simple and reliable,without the need for expensive instruments and complex technologies,which could be used for the rapid fabrication of large-area artificial rice leaf surfaces.We believe that the artificial rice leaf surface fabricated by this method has great potential applications in biomimetic functional surfaces,microfluidics,and so on.