Micro and nanostructures found on insect wings – designs for minimising adhesion and friction

Watson, Gregory, Watson, Jolanta, Hu, Simon, Brown, Christopher L., Cribb, Bronwen W., and Myhra, Sverre (2010) Micro and nanostructures found on insect wings – designs for minimising adhesion and friction. International Journal of Nanomanufacturing, 5 (1/2). pp. 112-128.

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Abstract

Adhesion and friction have been measured on insect wings where contamination (water and/or contaminating particles) can potentially have a detrimental effect on their flight capabilities or daily functioning. Adhesional forces as low as 2 nN were recorded in air for particles with radii of 10–15 nm, and 20 nN for particles of 31 mm radius. The effective coefficients of friction were in the range of 0.01 to 0.10. The low adhesion and frictional values demonstrate that only very low out-of-plane and in-plane forces are required to remove contaminants of nanometre and micron dimensions from the cuticle membranes.

Many of the surfaces demonstrate superhydrophobic properties and will not only reduce the effects of contact with surfaces but also promote a self-cleaning function for removing foreign bodies. It has also been demonstrated that surface structures and properties can be duplicated on polymer surfaces by using the wing membrane as a 'natural template'.

Item ID: 15337
Item Type: Article (Research - C1)
ISSN: 1746-9406
Keywords: insect; wings; adhesion; friction; atomic force microscope; AFM; template; nanostructures; wetting properties
Date Deposited: 24 Feb 2011 05:23
FoR Codes: 02 PHYSICAL SCIENCES > 0299 Other Physical Sciences > 029901 Biological Physics @ 80%
09 ENGINEERING > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified @ 20%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 40%
97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 20%
97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 40%
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