Hydrogel Micro Valves
Our patented microvalve has no membranes and is therefore extremely reliable and robust. It works because the polymer particles captured in a small cage dramatically change their size (by more than a factor of 10!) with temperature. Our standard valves feature a biocompatible switching temperature of 34 °C.
If you work with aqueous solutions, you will hardly find a valve that can be more easily incorporated into microfluidic networks. It is also an indispensable accessory for our microfluidic platform MicCell .
|Hydrogel particle actuator in standard 1/16" fitting for low dead-volume operation. Left: manual sample injection into a micro-funnel (red), right: automatic sample injection through a PEEK capillary (inner diameter 25 - 762 µm).||Scanning electron micrograph of a photopolymerized hydrogel as the smallest version of the microvalve. It is seen as small bulge between two dark channel walls and above a heater (light color).|
Performance of the hydrogel valve under normal operating conditions (250 mW).