Contact Mechanics at the Insect-Plant Interface: How Do Insects Stick and How Do Plants Prevent This?
Contacting surfaces in many insect attachment devices are subdivided into patterns of micro- or nanostructures with a high aspect ratio. This paper provides some explanations of the adhesion enhancement effect in such systems. However, attachment abilities of insects depend on the roughness and mechanical stability of the substrate features. Wax bloom of some plant surfaces causes a strong reduction of insect attachment. Four hypotheses of anti-adhesion mechanism of plant surfaces covered with epicuticular wax crystals are proposed, and two of them are experimentally supported.
KeywordsAdhesion biotribology biomechanics functional surfaces
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