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蝴蝶翅鳞片粗糙表面的微观/超微结构及各向异性

发表时间:2008-06-15  浏览量:1661  下载量:537
全部作者: 房岩,孙刚,丛茜,弯艳玲
作者单位: 吉林大学地面机械仿生技术教育部重点实验室;长春师范学院生命科学学院
摘 要: 本文对我国东北地区常见的11属14种蝴蝶翅鳞片粗糙表面的微观/超微结构进行了电镜扫描观察,使用视频光学接触角测量仪,采用先斜后滴法和先滴后斜法测量了鳞片表面的水滴滚动角。根据鳞片的微观结构,可将鳞片分为窄叶形、阔叶形和圆叶形3种。根据鳞片的超微结构,可将鳞片分为拱桥形、棋盘形、单列筛孔形、多列筛孔形和双列筛孔形5种。蝴蝶翅鳞片如覆瓦状相互重叠排列。在亚微米级和纳米级尺度上,均可以看出鳞片微观和超微结构具有各向异性。两种方法测得的水滴滚动角也表明翅表面的自清洁性具有各向异性。对去鳞片翅表面水滴滚动角的测量结果,证明了鳞片在蝴蝶翅表面的自清洁性上起到重要作用。
关 键 词: 工程仿生学;各向异性;座滴法;蝴蝶;粗糙表面;超微结构
Title: Micro/ultra-structure and anisotropism of the rough surface on butterfly wing scale
Author: FANG Yan, SUN Gang, CONG Qian, WAN Yanling
Organization: Key Laboratory for Terrain-Machine Bionics Engineering of Ministry of Education, Jilin University;School of Life Science, Changchun Normal University
Abstract: 11 genus 14 species butterfly, which are common in northeast China, were collected to observe and determine the micro/ultra-structure on the rough surface of wing scale by means of scanning electron microscopy. Two methods, first-incline-then-drip method (FITD method) and first-drip-then-incline method (FDTI method), were adopted to measure the sliding angle (SA) of water droplet on wing surface by an optical contact angle measuring system. Based on the microstructure of scale, there are three sorts of scales, including angustifoliate shape, latifoliate shape, and round-leaved shape. Based on the ultrastructure of scale, there are five sorts of scales, including arch bridge shape, chessboard shape, single array sieve pore shape, double array sieve pore shape, and multi array sieve pore shape. The scales arrange like overlapping roof tiles. Anisotropism of the micro/ultra-structure of wing scale can be seen on both submicro-scale and nano-scale. The anisotropism of self-cleaning on wing surface can also be showed by the water droplet sliding angle values determined by the above two methods. The crucial role of scale in determining the self-cleaning effect on butterfly wing surface is proved by the water SAs on butterfly wing surface without scale.
Key words: bionics; anisotropism; sessile drop; butterfly; rough surface; ultrastructure
发表期数: 2008年10月第11期
引用格式: 房岩,孙刚,丛茜,等. 蝴蝶翅鳞片粗糙表面的微观/超微结构及各向异性[J]. 中国科技论文在线精品论文,2008,1(11):1223-1227.
 
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