Fabrication improvements for thermoset polyester (TPE) microfluidic devices |
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Authors: | Fiorini Gina S Yim Moonbin Jeffries Gavin D M Schiro Perry G Mutch Sarah A Lorenz Robert M Chiu Daniel T |
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Affiliation: | Department of Chemistry, University of Washington, Seattle, WA, USA. |
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Abstract: | Thermoset polyester (TPE) microfluidic devices were previously developed as an alternative to poly(dimethylsiloxane) (PDMS) devices, fabricated similarly by replica molding, yet offering stable surface properties and good chemical compatibility with some organics that are incompatible with PDMS. This paper describes a number of improvements in the fabrication of TPE chips. Specifically, we describe methods to form TPE devices with a thin bottom layer for use with high numerical aperture (NA) objectives for sensitive fluorescence detection and optical manipulation. We also describe plasma-bonding of TPE to glass to create hybrid TPE-glass devices. We further present a simple master-pretreatment method to replace our original technique that required the use of specialized equipment. |
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