Fabrication and analysis of enforced dry adhesives with core-shell micropillars

被引：38

作者：

Bae, Won-Gyu ^{[1
,2
]}

Kwak, Moon Kyu ^{[3
]}

Jeong, Hoon Eui ^{[4
]}

Pang, Changhyun ^{[2
]}

Jeong, Hakgeun ^{[5
]}

Suh, Kahp-Yang ^{[1
,2
,6
]}

机构：

[1] Seoul Natl Univ, Interdisciplinary Program Bioengn, Seoul 151742, South Korea

[2] Seoul Natl Univ, Sch Mech & Aerosp Engn, WCU Program Multiscale Mech Design, Seoul 151742, South Korea

[3] Kyungpook Natl Univ, Sch Mech Engn, Taegu 702701, South Korea

[4] Ulsan Natl Inst Sci & Technol, Sch Mech & Adv Mat Engn, Ulsan 689798, South Korea

[5] Korea Inst Energy Res, Energy Efficiency Res Div, Taejon 305343, South Korea

[6] Seoul Natl Univ, Inst Bioengn, Seoul 151742, South Korea

来源：

SOFT MATTER | 2013年 / 9卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

ARRAYS; STABILITY; FRICTION; SURFACES;

D O I：

10.1039/c2sm27323c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present a simple method for fabricating robust dry adhesives by coating a soft polydimethyl siloxane (PDMS) thin layer on rigid backbone micropillars of polyurethane acrylate (PUA). These core-shell type micropillars demonstrated enhanced durability both in normal and shear adhesion over more than 100 cycles of attachment and detachment. Relatively strong normal (similar to 11.4 N cm(-2)) and shear (similar to 15.3 N cm(-2)) adhesion forceswere observed, which were similar to or even larger than those of homogeneous PDMS micropillars. A simple theoretical model based on beam deflection theory was used to explain the experimental results.

引用

页码：1422 / 1427

页数：6

共 39 条

[1] Effective elastic modulus of isolated gecko setal arrays [J].