Figure 8 | Scientific Reports

Figure 8

From: Biomimetic Coating-free Superomniphobicity

Figure 8

A summary of this work. Inspired by the microstructure of secondary granules in the cuticles of Dicyrtomina ornate51, we investigated how DO-DRPs might contribute towards preventing the lateral imbibition of wetting liquids into DRP arrays. As shown on top, arrays of coating-free DRPs exhibit superomniphobicity in terms of contact angles, but wetting liquids, e.g., water and hexadecane, instantaneously infiltrate laterally into them, limiting their practical use. To address this, we created a perimeter of DO-DRPs and a short wall around DRP arrays. The resulting microtexture robustly prevented the lateral imbibition of water and hexadecane, while also exhibiting superomniphobicity in air. Thus, this work is a step towards realizing robust, coating-free superomniphobicity – in air and on submersion.

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