A dual layer hair array of the brown lacewing: repelling water at different length scales

Watson, Jolanta A., Cribb, Bronwen W., Hu, Hsuan-Ming, and Watson, Gregory S. (2011) A dual layer hair array of the brown lacewing: repelling water at different length scales. Biophysical Journal, 100 (4). pp. 1149-1155.

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Additional weight due to contamination (water and/or contaminating particles) can potentially have a detrimental effect on the flight capabilities of large winged insects such as butterflies and dragonflies. Insects where the wing surface area-body mass ratio is very high will be even more susceptible to these effects. Water droplets tend to move spontaneously off the wing surface of these insects. In the case of the brown lacewing, the drops effectively encounter a dual bed of hair springs with a topographical structure which aids in the hairs resisting penetration into water bodies. In this article, we demonstrate experimentally how this protective defense system employed by the brown lacewing (Micromus tasmaniae) aids in resisting contamination from water and how the micro- and nanostructures found on these hairs are responsible for quickly shedding water from the wing which demonstrates an active liquid-repelling surface.

Item ID: 15397
Item Type: Article (Research - C1)
ISSN: 1542-0086
Date Deposited: 24 Feb 2011 05:40
FoR Codes: 02 PHYSICAL SCIENCES > 0299 Other Physical Sciences > 029901 Biological Physics @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 50%
97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 50%
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