Abstract

Polymers like PDMS or SU-8 have become popular for microfluidic applications. We show that modifications of the surface energy are more stable on NOA81 compared to PDMS. A simple method to fabricate a closed all-polymer microfluidic channel showing both hydrophilic and hydrophobic surfaces is presented and the therein handling of a multiphase flow (aqueous solution and organic solvent) is demonstrated.

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