Dresden 2017 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 52: Poster: Hydogels, Microgels, Responsive Polymers

CPP 52.4: Poster

Wednesday, March 22, 2017, 18:30–21:00, P3

Optimization of Planar Hydrogel-Based Micro-Valves for On-Chip Flow Control — •Anthony Beck, Philipp J. Mehner, Georgi Paschew, Martin Elstner, and Andreas Richter — Chair of Polymeric Microsystems, Technische Universität Dresden, Germany

A successful miniaturization and commercialization of fully integrated microfluidic systems are still under development due to the lack of reliable microfluidic components like micro-valves. Feasible hydrogel-based micro-valve concepts have been demonstrated and show a promising potential for high integration lab-on-chip applications. Due to the vast amounts of synthesis and design parameters an experimental development of reproducible, low-response micro-valves have only been done insufficiently. We propose a systematic investigation of a temperature triggered, hydrogel-based, planar micro-valve. Experimentally, the channel shapes, number and geometry of hydrogel elements have been evaluated to improve performance parameters. Furthermore, different MEMS compatible manufacturing techniques are assessed. Additional modifications allow the development of one-directional valves with a diode-like behavior. Computer aided models describes physical design parameters which are implemented in the current concepts. The proposed design changes improve the valve response time and break through pressures of up to 1 bar and formulate new design rules for next generation micro-valves.