Publication

UV-Curable Glue (NOA81) for Fabrication of a Closed Microfluidic Channel with Hydrophilic and Hydrophobic Surfaces

Nico de Rooij, Alexandra Anne Labiba Kämpfer-Homsy
2011
Conference Papers

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.

Official source

https://infoscience.epfl.ch/entities/publication/49e0b226-1f5d-4c7d-9355-e1429b73b98c

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Nico de Rooij, Alexandra Anne Labiba Kämpfer-Homsy
2011
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/49e0b226-1f5d-4c7d-9355-e1429b73b98c

About this result

Related concepts (14)

Microfluidics

Microfluidics refers to a system that manipulates a small amount of fluids ((10−9 to 10−18 liters) using small channels with sizes ten to hundreds micrometres. It is a multidisciplinary field that involves molecular analysis, biodefence, molecular biology, and microelectronics. It has practical applications in the design of systems that process low volumes of fluids to achieve multiplexing, automation, and high-throughput screening.

Surface tension

Surface tension is the tendency of liquid surfaces at rest to shrink into the minimum surface area possible. Surface tension is what allows objects with a higher density than water such as razor blades and insects (e.g. water striders) to float on a water surface without becoming even partly submerged. At liquid–air interfaces, surface tension results from the greater attraction of liquid molecules to each other (due to cohesion) than to the molecules in the air (due to adhesion). There are two primary mechanisms in play.

Droplet-based microfluidics

Droplet-based microfluidics manipulate discrete volumes of fluids in immiscible phases with low Reynolds number and laminar flow regimes. Interest in droplet-based microfluidics systems has been growing substantially in past decades. Microdroplets offer the feasibility of handling miniature volumes (μl to fl) of fluids conveniently, provide better mixing, encapsulation, sorting, sensing and are suitable for high throughput experiments.

Related publications (7)

UV-Curable Glue (NOA81) for Fabrication of a Closed Microfluidic Channel with Hydrophilic and Hydrophobic Surfaces

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