Hierarchical surfaces for enhanced self-cleaning applications

Ariadna Fernández, Achille Francone, Lasse H. Thamdrup, Alicia Johansson, Brian Bilenberg, Theodor Nielsen, Markus Guttmann, Clivia M. Sotomayor Torres, Nikolaos Kehagias

    Research output: Contribution to journalArticleResearchpeer-review

    13 Citations (Scopus)

    Abstract

    © 2017 IOP Publishing Ltd. In this study we present a flexible and adaptable fabrication method to create complex hierarchical structures over inherently hydrophobic resist materials. We have tested these surfaces for their superhydrophobic behaviour and successfully verified their self-cleaning properties. The followed approach allow us to design and produce superhydrophobic surfaces in a reproducible manner. We have analysed different combination of hierarchical micro-nanostructures for their application to self-cleaning surfaces. A static contact angle value of 170 with a hysteresis of 4 was achieved without the need of any additional chemical treatment on the fabricated hierarchical structures. Dynamic effects were analysed on these surfaces, obtaining a remarkable self-cleaning effect as well as a good robustness over impacting droplets.
    Original languageEnglish
    Article number045020
    JournalJournal of Micromechanics and Microengineering
    Volume27
    Issue number4
    DOIs
    Publication statusPublished - 20 Mar 2017

    Keywords

    • hierarchical surface
    • nanoimprint
    • superhydrophobicity

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