Rapid, ultraviolet-induced, reversibly switchable wettability of superhydrophobic/superhydrophilic surfaces

• Yunlu Pan,
• Wenting Kong,
• Bharat Bhushan and
• Xuezeng Zhao

Beilstein J. Nanotechnol. 2019, 10, 866–873, doi:10.3762/bjnano.10.87

• surfaces exhibiting reversible wettability [20]. Wang et al. [21] prepared a TiO2 polycrystalline film which achieved drastic changes in wettability when the water contact angle (WCA) was changed from 72° and 0° under UV illumination, followed by recovery at around 70° after storing in the dark. Jin et al

• (heptadecafluoro-1,1,2,2-tetradecyl)trimethoxysilane, which not only exhibited reversible wettability from 160° to 0° but also reduced the transition time to 60 min. By modifying trimethoxy(alkyl)silane, TiO2-based surfaces can achieve a faster change from superhydrophobic to superhydrophilic. However, the reason

Novel reversibly switchable wettability of superhydrophobic–superhydrophilic surfaces induced by charge injection and heating

• Xiangdong Ye,
• Junwen Hou and
• Dongbao Cai

Beilstein J. Nanotechnol. 2019, 10, 840–847, doi:10.3762/bjnano.10.84

• . Keywords: charge injection; heating; reversible wettability; superhydrophilic; superhydrophobic; Introduction Surfaces that are capable of reversibly switchable wettability have attracted increasing interest, especially those able to switch between superhydrophobicity and superhydrophilicity, and hence