Morphology and contact mechanics influence adhesive characteristics of Dung Beetle's bristle and Gecko's setae

作     者：Yue David 

作者机构：China Institute of Bio-Inspired Structure and Surface Engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2007年第17卷第9期

页      面：1074-1081页

核心收录：

学科分类：08[工学] 09[农学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0901[农学-作物学] 0836[工学-生物工程] 090102[农学-作物遗传育种] 0702[理学-物理学] 

基　　金：Supported by Key Project of National Natural Science Foundation of China(Grant No.60535020) China National Key Grant of Basic Scientific Project(Grant No.2002 CCA01200) National Natural Science Foundation of China(Grant Nos.30470230 and 30400086) 

主　　题：Adherence Morphology Contact stiffness Beetle bristles Gecko setae Contact mechanics 

摘      要：Geckos(Gekko gecko)use their hairy setae to adhere on various solid surfaces and dung beetles(Copris ochus Motschulsky)use their hairy bristles to anti-adhere in sticky *** study why two hairy systems express a conflict in functions by using SEM,histological approaches and functional *** models and various parameters were collected and *** on the morphological data and functional experimental results carried out by natural and denatured gecko setae and beetle bristles,we first demonstrated that the stiffness along the hair is 1000 to 30000 times that perpendicular to the *** stiffness difference is the key factor leading to the two hairy systems’ functional *** of gecko setae reduces contact stiffness,increases contact points and real contact area that results in amazing adhesive *** the other hand,stiff bristles in a beetle have higher contact stiffness,which reduces the real contact area and decreases the adhesion between two contact *** of gecko setae destroys the hierarchical structure,increases the contact stiffness and results in a decrease of adhesion ***,deformation of beetle bristles destroys the erect structure of the hair,interconnects the separated bristles and thus decreases the anti-adhesive *** observations inspire us in designing anti-adhesive and adhesive biomimetic systems