“…With the rapid development of the smart surface with controlled wetting behavior, reversible superwetting transition between superhydrophobicity and superhydrophilicity has received particular attention (Ding et al, 2018;Wan et al, 2018;Brehm et al, 2020;Zhao et al, 2020). UV irradiation (Li et al, 2013;Yang et al, 2017;Jiang et al, 2019), pH (Yu et al, 2005;Chen et al, 2017;Cheng et al, 2019), electric field (Idriss et al, 2020), and heat treatment (Wang et al, 2021) are widely reported as external stimuli for achieving wettability transition in many literatures. Among the mentioned external stimuli, UV has been extensively employed, because some photocatalytic materials, such as ZnO, TiO 2 , and SnO 2 , can realize wettability transition under UV irradiation (Velayi and Norouzbeigi, 2019).…”