Anti-stiction coating of PDMS moulds for rapid microchannel fabrication by double replica moulding

Guisheng Zhuang, Jörg Peter Kutter

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    In this paper, we report a simple and precise method to rapidly replicate master structures for fast microchannel fabrication by double replica moulding of polydimethylsiloxane (PDMS). A PDMS mould was surface-treated by vapour phase deposition of 1H,1H,2H,2H-perfluorodecyltrichlorosilane (FDTS), which resulted in an anti-stiction layer for the improved release after PDMS casting. The deposition of FDTS on an O2 plasma-activated surface of PDMS produced a reproducible and well-performing anti-stiction monolayer of fluorocarbon, and we used the FDTS-coated moulds as micro-masters for rapid replication of micro-structures, avoiding the necessity to have to use other, more costly and fragile master materials. Our protocol has been shown to reliably fabricate PDMS-based microfluidic devices in a low-cost and efficient manner. The replicas were further employed as micro-contract stamps to fabricate polymer-based waveguides.

    Original languageEnglish
    JournalJournal of Micromechanics and Microengineering
    Volume21
    Issue number10
    Pages (from-to)105020
    ISSN0960-1317
    DOIs
    Publication statusPublished - 2011

    Keywords

    • Interfaces and thin films
    • Liquids and polymers
    • Surfaces
    • Soft matter
    • Condensed matter

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