Gilet, Tristan, Heepe, Lars, Lambert, Pierre, Compère, Philippe and Gorb, Stanislav (2018) Liquid secretion and setal compliance: the beetle's winning combination for a robust and reversible adhesion. Current Opinion in Insect Science, 30 . pp. 19-25. DOI 10.1016/j.cois.2018.08.002.

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Abstract

This paper is a brief review and discussion of the recent literature on the hairy adhesive pads of beetles, with the focus on two features of these pads, firstly, compliant setal tips and secondly, a liquid secretion, that together guarantee robust cycles of attachment/detachment on smooth and rough substrates. The compliance is required to ensure sufficient contact between the setal tips and the substrate with a minimum of elastically stored energy at the contact interface. The secretion fills potential gaps between both surfaces, generates capillary adhesive forces, and enhances self-cleaning of these microstructures. Furthermore, the secretion might prevent setal dehydration and subsequently maintain setal tip compliancy. The paper also pinpoints a series of open questions on the physical mechanisms at play to passively regulate the contact forces developed by these hairy pads during locomotion.

Document Type:	Article
Research affiliation:	Kiel University > Kiel Marine Science OceanRep > The Future Ocean - Cluster of Excellence Kiel University
Refereed:	Yes
Open Access Journal?:	No
Publisher:	Elsevier
Projects:	Future Ocean
Date Deposited:	04 Feb 2019 12:08
Last Modified:	02 Jan 2020 12:21
URI:	https://oceanrep.geomar.de/id/eprint/45679

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