Abstract
Results of investigation of hydrophobic properties of ZnO coating with different surface morphology are given. It was shown that for the case of ZnO samples with surface roughness in the nanometer range, the Wenzel state is realized, and for microstructured samples - the Сassie state. For a sample with multimodal surface roughness, a superhydrophobic state was achieved with an edge angle of 151 ° and an adhesion operation of 8.82 mJ/m2. It has been demonstrated that the presence of micrometer defects on the surface of superhydrophobic samples leads to instability of the Сassie state, and as the radius of water drops increases, the Сassie-Wenzel transition is realized.
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