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Biomimetics 2017, 2(3), 10; doi:10.3390/biomimetics2030010

Effective Elastic Modulus of Structured Adhesives: From Biology to Biomimetics

School of Power and Mechanical Engineering, Wuhan University, South Donghu Road 8, Wuhan 430072, China
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Academic Editor: Giuseppe Carbone
Received: 28 February 2017 / Revised: 24 May 2017 / Accepted: 24 June 2017 / Published: 29 June 2017
(This article belongs to the Special Issue Micro- and Nano-Structured Bio-Inspired Surfaces)
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Abstract

Micro- and nano-hierarchical structures (lamellae, setae, branches, and spatulae) on the toe pads of many animals play key roles for generating strong but reversible adhesion for locomotion. The hierarchical structure possesses significantly reduced, effective elastic modulus (Eeff), as compared to the inherent elastic modulus (Einh) of the corresponding biological material (and therefore contributes to a better compliance with the counterpart surface). Learning from nature, three types of hierarchical structures (namely self-similar pillar structure, lamella–pillar hybrid structure, and porous structure) have been developed and investigated. View Full-Text
Keywords: effective elastic modulus; hierarchical structure; adhesion; self-similar structure; lamella–pillar hybrid structure; porous structure effective elastic modulus; hierarchical structure; adhesion; self-similar structure; lamella–pillar hybrid structure; porous structure
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wang, X.; Tan, D.; Zhang, X.; Lei, Y.; Xue, L. Effective Elastic Modulus of Structured Adhesives: From Biology to Biomimetics. Biomimetics 2017, 2, 10.

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