摘要
使用扫描电镜和视频光学接触角测量仪研究了22种蝴蝶翅表面的多级复合结构和疏水性。一级结构为微米级鳞片,鳞片密度为101~280个/mm2,长65~135μm,宽35~85μm,间距48~112μm。二级结构为鳞片表面的亚微米级纵肋和横向连接。三级结构为纵肋和横向连接上的纳米级突起。蝴蝶翅表面的蒸馏水接触角为138.2°~158.5°,属于天然疏水表面,这是翅表面化学组成与微观结构协同作用的结果。蝴蝶翅表面可为新型仿生自清洁材料的制备提供生物模板。
The complex hierarchical structures and hydrophobicity of wing surface of 22 butterfly species were investigated by means of a scanning electron microscopy and a contact angle measuring system. The primary structure is micrometric scale. The density of scale is 101 ~ 280 ind. /mm2,and the length,width,and spacing of scale are 65 ~135 μm,35 ~85 μm,and 48 ~112 μm,respectively. The secondary structure is submicrometric vertical gibbosities and horizontal links on scale surface. The tertiary structure is nano-protuberances on vertical gibbosities and horizontal links. Butterfly wing surface has contact angles of distilled water as high as 138. 2° ~ 158. 5°,belonging to natural hydrophobic surface,which is the coupling effect of chemical composition and microstructure on the wing surface.Butterfly wing surface may provide bio-template for fabrication of novel biomimetic material with self-cleaning property.
作者
房岩
韩德复
毕语涵
孙刚
FANG Yan, HAN De - fu, BI Yu -han, SUN Gang （School of Life Science, Changchun Normal University, Changchun Jilin 130032, China）
基金
国家自然科学基金项目（50875108,31370475）
吉林省科技厅自然科学基金项目（201115162）
吉林大学工程仿生教育部重点实验室开放基金项目（K201004）
吉林省教育厅科技计划项目（2009210,2010373,2011186）
关键词
蝴蝶
多级结构
接触角
疏水性
生物模板
butterfly
hierarchical structure
contact angle
hydrophobicity
bio-template
