Roll-to-plate fabrication of microfluidic devices with rheology-modified thiol-ene resins

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In this paper, the replication possibilities of microfluidic channels by UV-roll-to-plate fabrication were investigated and a study of rheology-modified thiol-ene for the application in such a UV-roll-to-plate setup was conducted. The system allows the manufacture of channels with aspect ratios of 2:1 and a maximal channel depth of 90 μm as well as the sealing of the finished devices with patterning and sealing speeds of up to 19 m min-1. By adding fumed silica nanoparticles to the uncured resins, it was possible to alter the rheological behavior of the resin system to fabricate shallow microfluidic channels with 40 × 95 μm cross-sectional dimensions. Moreover, deeper (90 μm) channels can be fabricated with highly viscous resins based on thiol-terminated oligomers. As a demonstration, capillary electrophoresis chips were prepared and tested for a simple separation of two fluorescent dyes.

Original languageEnglish
Article number075014
JournalJournal of Micromechanics and Microengineering
Issue number7
Number of pages9
Publication statusPublished - 20 Jun 2016

    Research areas

  • microfluidic device, rheology modification, roll-to-roll fabrication, thiol-ene polymers

ID: 165884252