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Superomniphobic Surfaces with Improved Mechanical Durability: Synergy of Hierarchical Texture and Mechanical Interlocking

ABSTRACT: Due to their unique functionality, superomniphobic surfaces that display extreme repellency toward virtually any liquid, have a wide range of potential applications. However, to date, the mechanical durability of superomniphobic surfaces remains a major obstacle that prevents their practical deployment. In this work, a two-layer design strategy was developed to fabricate superomniphobic surfaces with improved durability via synergistic effect of interconnected hierarchical porous texture and micro/nano-mechanical interlocking. The improved mechanical robustness of these surfaces was assessed through water shear test, ultrasonic washing test, blade scratching test, and Taber abrasion test. Graphical Abstract A simple two-layer design strategy is developed to enable the fabrication of robust superomniphobic surfaces. The interconnected hierarchical porous texture of fluorinated fumed silica particles and the micro/nano-mechanical interlocking between the particle layer and the polyurethane based adhesive layer results in the improved mechanical robustness of superomniphobic surfaces.

SUBMITTER: Wang W

PROVIDER: S-EPMC7546319 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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