Flexibility and Poisson effect on detachment of gecko-inspired adhesives

被引：5
作者：
Sekiguchi, Y. [1 ]
Saito, S. [2 ]
Takahashi, K. [3 ]
Sato, C. [1 ]
机构：
[1] Tokyo Inst Technol, Precis & Intelligence Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
[2] Tokyo Inst Technol, Dept Mech & Aerosp Engn, Meguro Ku, Tokyo 1528552, Japan
[3] Tokyo Inst Technol, Dept Int Dev Engn, Meguro Ku, Tokyo 1528552, Japan
来源：
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES | 2015年 / 62卷
关键词：
Biological adhesion; Novel adhesives; Elastic modulus; Detachment; Gecko; SETAL ARRAYS; FOOT-HAIR; SURFACES; CONTACT; STIFFNESS; BEHAVIOR; FORCE; MICRO; SHAPE; BEAM;
D O I：
10.1016/j.ijadhadh.2015.06.011
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Geckos and some insects can easily adhere to and detach from surfaces with micro/nanoscale hair structures on their foot, called setae and spatulas. Here, a model is developed to describe the detachment of the seta. In this model, the seta is assumed to be a beam whose tip adheres to a surface. When normal and tangential forces are applied to the root of the beam, a moment is generated at the contact tip and detachment occurs. The detachment conditions depend heavily on flexibility of the hair. The effects of Young's modulus and aspect ratio of length versus thickness of the beam on the detachment condition are theoretically investigated. The Poisson effect on the detachment conditions was also examined with the experimental results using fabricated silicone rubber beam arrays. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：55 / 62
页数：8
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