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. 2024 Oct 18;14:24434. doi: 10.1038/s41598-024-72634-2

Fig. 14.

Fig. 14

Illustration of water droplet contact angle measurements for 10 μm holes sample: (a) Before oxidation (contact angle > 90° indicates hydrophobic nature); (b) After oxidation (sample becomes hydrophilic and water enters inside micropores).