The rose petal effect and the role of advancing water contact angles for drop confinement

    Research output: Contribution to journalJournal articleResearchpeer-review

    441 Downloads (Pure)

    Abstract

    We studied the role of advancing water contact angles on superhydrophobic surfaces that exhibited strong pinning effects as known in nature from rose petals. Textured surfaces were engineered in silicon by lithographical techniques. The textures were comprised of hexagonal microstructures superimposed with randomly distributed nanospikes and were coated with a hydrophobic fluorocarbon agent. A step in the advancing water contact angle bounding specific areas was obtained by engineering a corresponding topographic step in the hexagonal micro-texture. This enabled a surface texture design confining drops to areas with a lower advancing contact angle.
    Original languageEnglish
    Article number024001
    JournalSurface Topography: Metrology and Properties
    Volume5
    Number of pages8
    ISSN2051-672X
    DOIs
    Publication statusPublished - 2017

    Fingerprint Dive into the research topics of 'The rose petal effect and the role of advancing water contact angles for drop confinement'. Together they form a unique fingerprint.

    Cite this