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Keywords:

  • adhesion;
  • interfaces;
  • nanostructures;
  • superphydrophobicity;
  • zinc oxide
Thumbnail image of graphical abstract

Any petal but a lotus: The hierarchically structured ZnO surface presents superhydrophobicity and a distinctive solid–liquid adhesion that can be attributed to the suitable size of nanostructures in combination with microscopic structures (see picture). Although the surface is superhydrophobic, water droplets continue to cling to the surface even when it is overturned.