Adhesion design maps for bio-inspired attachment systems
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Date
2005-01
Publication Type
Journal Article
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yes
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Abstract
Fibrous surface structures can improve the adhesion of objects to other surfaces. Animals, such as flies and geckos, take advantage of this principle by developing "hairy" contact structures which ensure controlled and repeatable adhesion and detachment. Mathematical models for fiber adhesion predict pronounced dependencies of contact performance on the geometry and the elastic properties of the fibers. In this paper the limits of such contacts imposed by fiber strength, fiber condensation, compliance, and ideal contact strength are modeled for spherical contact tips. Based on this, we introduce the concept of "adhesion design maps" which visualize the predicted mechanical behavior. The maps are useful for understanding biological systems and for guiding experimentation to achieve optimum artificial contacts. © 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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published
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Journal / series
Volume
1 (1)
Pages / Article No.
5 - 13
Publisher
Elsevier
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Edition / version
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Date created
Subject
Attachment; Adhesion; Dry adhesives; Locomotion; JKR theory; Contact mechanics; Elasticity; Surface patterning; Young’s modulus; Shapes; Materials selection; Design
Organisational unit
03692 - Spolenak, Ralph / Spolenak, Ralph
Notes
Received 3 June 2004, Received in revised form 20 August 2004, Accepted 27 August 2004, Available online 30 September 2004.