Superhydrophobic surfaces of the water bug Notonecta glauca
Author Information
Author(s): Ditsche-Kuru Petra, Schneider Erik S, Melskotte Jan-Erik, Brede Martin, Leder Alfred, Barthlott Wilhelm
Primary Institution: Nees Institute for Biodiversity of Plants, Rheinische Friedrich-Wilhelms University of Bonn
Hypothesis
Do the air retaining surface structures vary on the different body parts?
Conclusion
The study found that the upper side of the elytra of Notonecta glauca can hold an air film for over 130 days, significantly reducing friction.
Supporting Evidence
- The upper side of the elytra can hold an air film for over 130 days.
- The air film on the underside of the elytra showed gaps after a few days.
- The elytra can maintain an air film at flow velocities up to 5 m/s.
Takeaway
The backswimmer bug has special surfaces that can trap air for a long time, helping it move easily in water.
Methodology
The study involved comparing the micro- and nanostructure of different body parts of Notonecta glauca and measuring air film persistence under hydrostatic and hydrodynamic conditions.
Digital Object Identifier (DOI)
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