Microstructure and nanomechanical properties of the wing membrane of dragonfly

被引：86

作者：

Song, F. ^{[1
]}

Xiao, K. W.

Bai, K.

Bai, Y. L.

机构：

[1] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China

[2] Peking Univ, Hlth Sci Ctr, Sch Pharmaceut Sci, Dept Biol Chem, Beijing 100083, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 457卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

microstructure; surface structure; mechanical properties; surface analysis; membrane;

D O I：

10.1016/j.msea.2007.01.136

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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.

引用

页码：254 / 260

页数：7

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