Superhydrophobic engineering surfaces with tunable air-trapping ability

2008/02/06 by Yilei Zhang, Sriram Sundararajan · 1 citation
Materials Science · Engineering · #Surface Modification and Superhydrophobicity #Adhesion, Friction, and Surface Interactions #Electrohydrodynamics and Fluid Dynamics

paper · doi:10.1088/0960-1317/18/3/035024

openalex publication_date 2008/02/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11

Abstract

A versatile hybrid processing method that combines electrostatic deposition of microparticles and subsequent anisotropic plasma etching is described that can generate superhydrophobic engineering surfaces with tunable bimodal roughness and a thin hydrophobic fluorocarbon film. These surfaces exhibit contact angles with water of more than 160° for particle coverage beyond a threshold value. A geometric model based on air-trapping ability is developed to explain this observed threshold value of particle coverage and extended to arbitrary rough surfaces utilizing statistical roughness parameters.

Citations

• Purity of the sacred lotus, or escape from contamination in biological surfaces
• Wettability of porous surfaces

Cited by

• Hydrophobe [wikipedia]

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