Why is it difficult to wash aphids off from superhydrophobic kale?

  title={Why is it difficult to wash aphids off from superhydrophobic kale?},
  author={Viraj G. Damle and R. Scott Linder and Xiaoda Sun and Nicholas Kemme and Lucas C. Majure and Konrad Rykaczewski},
  journal={Bioinspiration \& Biomimetics},
Many varieties of the cabbage family have leaves covered with superhydrophobic epicuticular wax, which provides them with self-cleaning characteristics. Since the wax also lowers insect adhesion, rinsing of the leaves with water should be an effective way of removing the insects. Conversely, we report that superhydrophobicity of tuscan kale increases resistance of aphids to hydrodynamic removal. The exterior surface of the insects is also superhydrophobic and acts as an extension of the leaf’s… 
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  • H. BohnW. Federle
  • Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 2004
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