The relationship between surface geometries and advancing and receding angles for superhydrophobic surfaces
Liner Sean Garrett (1)*, Zheng Keqin (2), Zhang Jinde (2), Dodiuk Hanna (3), Kenig Samuel (3), Barry Carol (2), Lepont Claire (2), Mead Joey (2)
(1) Plainview-Old Bethpage John F. Kennedy High School - New York - USA, (2) University of Massachusetts Lowell - Massachusetts - USA, (3) Shenkar College - Ramat Gan - Israel
Superhydrophobic surfaces are of interest for a range of applications, such as self-cleaning, anti-corrosion, and drag reduction. In this work, the effect of surface geometry on the advancing and receding angles (their difference being the contact angle hysteresis) in the Cassie-Baxter state was studied. A fluoro-silane treated micro-post pattern fabricated by lithography was used as model surface. In this study the shape, height, and spacing of the micro-post pattern was varied and the advancing and receding angles was measured. The effect of surface geometry on the advancing and receding angles will be presented.