Design of gecko-inspired fibrillar surfaces with strong attachment and easy-removal properties: a numerical analysis of peel-zone.

Journal of the Royal Society, Interface
Ming ZhouYu Tian

Abstract

Despite successful fabrication of gecko-inspired fibrillar surfaces with strong adhesion forces, how to achieve an easy-removal property becomes a major concern that may restrict the wide applications of these bio-inspired surfaces. Research on how geckos detach rapidly has inspired the design of novel adhesive surfaces with strong and reversible adhesion capabilities, which relies on further fundamental understanding of the peeling mechanisms. Recent studies showed that the peel-zone plays an important role in the peeling off of adhesive tapes or fibrillar surfaces. In this study, a numerical method was developed to evaluate peel-zone deformation and the resulting mechanical behaviour due to the deformations of fibrillar surfaces detaching from a smooth rigid substrate. The effect of the geometrical parameters of pillars and the stiffness of backing layer on the peel-zone and peel strength, and the strong attachment and easy-removal properties have been analysed to establish a design map for bio-inspired fibrillar surfaces, which shows that the optimized strong attachment and easy-removal properties can vary by over three orders of magnitude. The adhesion and peeling design map established provides new insights into the design...Continue Reading

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Citations

Jan 16, 2015·Journal of the Royal Society, Interface·Saurabh DasJacob N Israelachvili
Nov 7, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Saurabh DasJacob N Israelachvili
Sep 16, 2016·Journal of the Royal Society, Interface·Quan XuZhenhai Xia
Sep 25, 2021·Soft Matter·Jae-Kang Kim, Michael Varenberg
Oct 15, 2021·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Yating YiXiong Lu

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