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(a) Scanning electron microscope images of the stainless steel laser textured samples. Groove pitches: 80, 140, and 240 μm. In the insets, magnifications of the redeposited aggregates. (b) Evolution of the droplet set on the original and laser-machined superhydrophobic surfaces at subzero temperature (−8.5 ± 0.5 °C) (Reprinted with permission from [109]).
