From hydrophilic to superhydrophobic: Fabrication of micrometer-sized nail-head-shaped pillars in diamond

Mikael Karlsson*, Pontus Forsberg, Fredrik Nikolajeff

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    53 Citations (Scopus)

    Abstract

    The hydrophobicity of microtextured diamond surfaces was investigated. Pillarlike structures were fabricated in both, nanocrystalline diamond and microcrystalline diamond. By changing the surface termination of the textured diamond surface, we could switch between superhydrophobic surfaces and hydrophilic surfaces. Examined terminations were hydrogen, fluorine, and oxygen. To evaluate the wetting properties, advancing and receding contact angles were measured. By designing pillars with a wide diamond top on a narrower silicon stem, superhydrophobicity was achieved even when the advancing contact angle on the unstructured diamond surface was below 70°. The possibility to manipulate the hydrophobicity and the Fresnel reflection simultaneously at an infrared wavelength is also demonstrated.

    Original languageEnglish
    Pages (from-to)889-893
    Number of pages5
    JournalLangmuir
    Volume26
    Issue number2
    DOIs
    Publication statusPublished - 19 Jan 2010

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