Figure 3
From: Contact Angle Measurement of Small Capillary Length Liquid in Super-repelled State
Experimental profiles of water and FC-72 at different magnifications and their comparisons. (a) Whole droplet profiles of water and FC-72 and different zooms at their advancing menisci. ① and ② show the advancing menisci of water and FC-72 close to the contact point at no zoom. ③ and ④ demonstrate the advancing meniscus of FC-72 under virtual and physical zoom set to be inversely proportional to the ratio of its capillary length to water. (b) Overlap of ① and ③ shows the matching of water and FC-72 (virtual zoom) advancing menisci except the blurred region in FC-72 due to limited resolution and lighting. (c) Overlap of ① and ④ shows the matching of water and FC-72 (physical zoom) advancing menisci with the blurred region resolved by higher magnification. (d) Overlap of ①, ③ and ④ summarizes the conclusions from (b) and (c).
