Microstructure and nanomechanical properties of the wing membrane of dragonfly
Microstructure and nanomechanical properties of the wing membrane of dragonfly
复制标题
蜻蜓翼膜的微观结构与纳米力学性能
DOI：
10.1016/j.msea.2007.01.136
复制
发表时间：
2007-05-25
期刊：
影响因子：
6.4
通讯作者：
Bai, Y. L.
中科院分区：
文献类型：
--
作者：
Song, F.;Xiao, K. W.;Bai, Y. L.
对蜻蜓翼膜的微观结构和力学性能进行了详细的研究。结果发现，在厚度方向上，膜被分为三层，而不是传统上认为的单一实体，膜表面呈现随机分布的粗糙微结构，由大量纳米尺度的柱状结构组成，表面覆盖着角质层蜡质。精确测量了表面的特征，并提出了柱子的统计径向分布函数来描述表面的结构特性。在表面微结构的基础上，用纳米压痕技术研究了分别取自活蜻蜓和死蜻蜓翅膀的膜的力学性能。本文得到的杨氏模数约为以前结果的两倍，并对产生差异的原因进行了讨论。(C)2007 Elsevier B.V.保留所有权利。
Detailed investigations on the microstructure and the mechanical properties of the wing membrane of the dragonfly were carried out. It was found that in the direction of the thickness the membrane was divided into three layers rather than as traditionally considered as a single entity, and on the surfaces the membrane displayed a random distribution rough microstructure that was composed of numerous nanometer scale columns coated by the cuticle wax secreted. The characteristics of the surfaces were accurately measured and a statistical radial distribution function of the columns was presented to describe the structural properties of the surfaces. Based on the surface microstructure, the mechanical properties of the membranes taken separately from the wings of living and dead dragonflies were investigated by the nanoindentation technique. The Young's moduli obtained here are approximately two times greater than the previous result, and the reasons that yield the difference are discussed. (C) 2007 Elsevier B.V. All rights reserved.