Superoleophobic Surfaces: Hierarchically Structured Superoleophobic Surfaces with Ultralow Contact Angle Hysteresis

1. Arun K. Kota¹, 
2. Yongxin Li¹, 
3. Joseph M. Mabry², 
4. Anish Tuteja^1,*

Article first published online: 8 NOV 2012

DOI: 10.1002/adma.201290266

Hierarchically structured, superoleophobic surfaces are demonstrated that display one of the lowest contact angle hysteresis values ever reported – even with extremely low-surface-tension liquids such as n-heptane. Consequently, these surfaces allow, for the first time, even ≈2 μL n-heptane droplets to bounce and roll-off at tilt angles. ≤ 2°.