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All dragonfly wings have unique for anti-wet and antibacterial

The researchers unveiled first-time understanding of the physical and chemical surface features of an optimum dragonfly for antiwetting design and antibacterial surfaces. The dragonfly wing is very interesting to investigate the biomimetic design where the epicuticular wax layer on the wing membrane has a unique surface nanoscopy consisting of an irregular array of nanostructures.

Wings on various species of dragonfly have an architecture that bestows superhydrophobic, self-cleaning, antiwetting, and antibiofouling behaviors. Some evidence suggests lifestyle factors may have influenced the evolution of nanostructures of wings and their resulting properties. But to this day no systematic studies have been conducted that have compared features of the wing surface in various species of dragonfly.

Penelitian All dragonfly wings have unique for anti-wet and antibacterial

A team at Swinburne University of Technology provides a comparison of the characteristics of the relevant wing surface including the chemical composition, wettability, and nanoarchitecture of seven species of dragonflies are Austrothemis nigrescens, Orthetrum chrysostigma, Trithemis annulata, Sympetrum fonscolombii, Anax parthenope, Anax imperator and Onychogomphus forcipatus.

Each species has characteristics in the nanopillar arrangement, chemical composition and superhydrophobicity on the wing surface. However, they all have subtle differences in the height, width, and density of nanofeatures in the bounce behavior of water droplets on the wing surface.

Journal : Samuel Cheeseman et al. Pillars of Life: Is There a Relationship between Lifestyle Factors and the Surface Characteristics of Dragonfly Wings?, ACS Omega, June 5, 2018, DOI:10.1021/acsomega.8b00776



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