Fig. 1. SEM Images of (a) electrodeposited zinc surface and (b) electrodeposited zinc surface with a hydrothermal (boiling) treatment at (i) low and (ii) high magnifications.
Fig. 2. Images of (a) water, (b) ethylene glycol and (c) hexadecane droplets on (i) electrodeposited zinc (Zn), (ii) with Teflon coating (Zn-T), (iii) with hydrothermal treatment and Teflon coating (Zn-H-T) and with hydrothermal treatment, Teflon coating and oil-impregnation (Zn-H-T-O). (d) Summarized static contact angles as a function of surface tension of liquids. White scale bars in (a)-(c) indicate 1 mm.
Fig. 3. Schematic cross-sectional images of liquid droplets on surfaces.
Fig. 4. Images of (a) water, (b) ethylene glycol and (c) hexadecane droplets on (i) electrodeposited zinc (Zn), (ii) with Teflon coating (Zn-T), (iii) with hydrothermal treatment and Teflon coating (Zn-H-T) and with hydrothermal treatment, Teflon coating and oil-impregnation (Zn-H-T-O). Left and right images indicate the liquid droplet during the measurements of advancing and receding contact angle, respectively. (d) Summarized receding contact angles and (e) contact angle hysteresis as a function of surface tension of liquids. White scale bars in (a)-(c) indicate 1 mm.
Fig. 5. Images of water, ethylene glycol and hexadecane droplets on tilted electrodeposited zinc (Zn), zinc with Teflon coating (Zn-T), zinc with hydrothermal treatment and Teflon coating (Zn-H-T) and zinc with hydrothermal treatment, Teflon coating and oil-impregnation (Zn-H-T-O). Black scale bars indicate 1 mm.
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