A new method of UV-patternable hydrophobization of micro- and nanofluidic networks

Rerngchai Arayanarakool, Lingling Shui, Albert van den Berg, Jan C.T. Eijkel

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    This work reports a new method to hydrophobize glass-based micro- and nanofluidic networks. Conventional methods of hydrophobizing glass surfaces often create particulate debris causing clogging especially in shallow nanochannels or require skilful handling. Our novel method employs oxygen plasma, silicone oil and ultraviolet (UV) light. The contact angle of the modified bare glass surface can reach 100 whilst the inner channels after treatment facilitate stable and durable water-inoil droplet generation. This modified surface was found to be stable for more than three weeks. The use of UV in principle enables in-channel hydrophobic patterning
    Original languageUndefined
    Pages (from-to)4260-4266
    Number of pages7
    JournalLab on a chip
    Issue number24
    Publication statusPublished - 29 Sept 2011


    • IR-78989
    • EWI-21014

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