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低粘附力,不润湿,超疏水,杀菌和生物相容性表面的昆虫翅膀

派旗纳米 浏览次数:1232 分类:行业资讯

Insect Analogue to the Lotus Leaf: A Planthopper Wing Membrane Incorporating a Low-Adhesion, Nonwetting, Superhydrophobic, Bactericidal, and Biocompatible Surface

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发布情况:

Acs Applied Materials & Interfaces, 2017:24381.

科学研究精英团队:

Watson G S , Green D W , Cribb B W , et al. 

研究方向:

文章内容科学研究了柑橘木虱的羽翼构造,明确提出其具备低黏附力,不湿润,超疏水,除菌和生物体相溶等优质特点,与此同时其表层构造同菏叶相近,其具备不错的自清理和耐污实际效果,可以做为大家仿生技术运用的研究对象。


Abstract

Nature has produced many intriguing and spectacular surfaces at the micro- and nanoscales. These small surface decorations act for a singular or, in most cases, a range of functions. The minute landscape found on the lotus leaf is one such example, displaying antiwetting behavior and low adhesion with foreign particulate matter. Indeed the lotus leaf has often been considered the “benchmark” for such properties. One could expect that there are animal counterparts of this self-drying and self-cleaning surface system. In this study, we show that the planthopper insect wing (Desudaba danae) exhibits a remarkable architectural similarity to the lotus leaf surface. Not only does the wing demonstrate a topographical likeness, but some surface properties are also expressed, such as nonwetting behavior and low adhering forces with contaminants. In addition, the insect-wing cuticle exhibits an antibacterial property in which Gram-negative bacteria (Porphyromonas gingivalis) are killed over many consecutive waves of attacks over 7 days. In contrast, eukaryote cell associations, upon contact with the insect membrane, lead to a formation of integrated cell sheets (e.g., among human stem cells (SHED-MSC) and human dermal fibroblasts (HDF)). The multifunctional features of the insect membrane provide a potential natural template for man-made applications in which specific control of liquid, solid, and biological contacts is desired and required. Moreover, the planthopper wing cuticle provides a “new” natural surface with which numerous interfacial properties can be explored for a range of comparative studies with both natural and man-made materials.

 

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