Gecko-Inspired Surfaces: A Path to Strong and Reversible Dry Adhesives

被引:396
作者
Boesel, Luciano F. [1 ]
Greiner, Christian [2 ]
Arzt, Eduard [3 ]
del Campo, Aranzazu [1 ]
机构
[1] Max Planck Inst Polymer Res, Ackermannweg 10, D-55128 Mainz, Germany
[2] Univ Penn, Philadelphia, PA 19104 USA
[3] INM Leibniz Inst New Mat, D-66123 Saarbrucken, Germany
关键词
HIGH-ASPECT-RATIO; TETTIGONIA-VIRIDISSIMA ORTHOPTERA; BIOMIMETIC FIBRILLAR INTERFACES; HIERARCHICAL ATTACHMENT SYSTEM; POLYMER MICROFIBER ARRAYS; SLIDING-INDUCED ADHESION; CARBON NANOTUBE ARRAYS; RELEASABLE ADHESION; BIOLOGICAL ADHESION; PATTERNED SURFACES;
D O I
10.1002/adma.200903200
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The amazing adhesion of gecko pads to almost any kind of surfaces has inspired a very active research direction over the last decade: the investigation of how geckos achieve this feat and how this knowledge can be turned into new strategies to reversibly join surfaces. This article reviews the fabrication approaches used so far for the creation of micro- and nanostructured fibrillar surfaces with adhesive properties. In the light of the pertinent contact mechanics, the adhesive properties are presented and discussed. The decisive design parameters are fiber radius and aspect ratio, tilt angle, hierarchical arrangement and the effect of the backing layer. Also first responsive systems that allow thermal switching between nonadhesive and adhesive states are described. These structures show a high potential of application, providing the remaining issues of robustness, reliability, and large-area manufacture can be solved.
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页码:2125 / 2137
页数:13
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