Abstract
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 treatments required to obtain stable, reproducible substrates.
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Acknowledgements
We gratefully acknowledge the support by MicroNed, a consortium to nurture microsystems technology in The Netherlands. One of the authors (M.A. Raza) acknowledges support from the Higher Education Commission in Pakistan.
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Raza, M.A., Kooij, E.S., van Silfhout, A., Poelsema, B. (2011). A Facile Colloidal Route for Superhydrophobic Films with Hierarchical Roughness. In: Starov, V., Procházka, K. (eds) Trends in Colloid and Interface Science XXIV. Progress in Colloid and Polymer Science, vol 138. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-19038-4_15
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DOI: https://doi.org/10.1007/978-3-642-19038-4_15
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