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The self-assembled formation of PFDTS features on mono- and multilayered silica sphere arrays is studied. The multiscaled roughness induced by PFDTS nanostructures on multilayer arrays gives rise to superhydrophobic behaviour. In contrast to previous work, the role of PFDTS is two-fold: it lowers the surface energy and simultaneously provides the essential roughness to achieve superhydrophobicity...
We present a simple bottom-up colloidal route towards the manufacture of hierarchical substrates. Owing to the double length scale roughness, these super-structure arrays exhibit superhydrophobic wetting behaviour, characterized by large contact angles, limited hysteresis and small sliding angles. The assembly procedure of the nanocolloidal silica and gold particles is reviewed, as well as the chemical...
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