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. 2021 Oct 24;8(23):2103182. doi: 10.1002/advs.202103182

Figure 2.

Figure 2

Janus‐MRS with switchable wettability. a) Schematic of Janus‐MRS with switchable wettability under magnetic actuation. b) SEM images and corresponding water contact angles of the top surface and the bottom surface, respectively. c) Optical images demonstrate magneto‐responsive switchable wetting states between superhydrophobicity and hydrophilicity of Janus‐MRS (3 µL). d) The wetting stability of Janus‐MRS for 1000 cyclic switches under magnetic actuation. e) The droplet (9 µL) impact behaviors on Janus‐MRS with switchable wettability. The water droplet is bounced away from the superhydrophobic side while pinned on the hydrophilic side upon magnetic actuation.