Journal
SOFT MATTER
Volume 7, Issue 22, Pages 10569-10573Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1sm06347b
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Funding
- State Basic Research Program of China [2010CB934700]
- National Natural Science Foundation of China [20973018]
- Fundamental Research Funds for the Central Universities [YWF-10-01-C10, YWF-11-02-045]
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We show that micro-/nanostructure effects achieve water repellency of Morpho nestira butterfly wings under low temperature and changeable relative humidity. It is found that the multi-level micro-/nanostructures on wing scales effectively retard low-temperature-induced wetting, and achieve water repellency, accompanied with low adhesion under environmental humidity conditions. The mechanism of the extended water repellency is elucidated based on the micro-/nanostructure effect that can be adapted to low temperature and relative humidity. This finding offers an insight into micro-/nanostructures of butterfly wings, which helps to design novel interface materials to be applied in anti-frosting, anti-fogging and anti-icing projects.
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