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Figure 10 | Nanoscale Research Letters

Figure 10

From: Wettability Switching Techniques on Superhydrophobic Surfaces

Figure 10

Coexistence of two superhydrophobic modes. With feeble hydrophobicity (cosθ c < cosθ < 0), the apparent contact angle is theoretically given by the relation of Wenzel while for strong hydrophobicity (cosθ < cosθ c), the apparent contact angle follows the relation of Cassie–Baxter. However, in practice, an average hydrophobicity generally involves a metastable configuration of Cassie–Baxter (dotted lines)

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