Materials and processes for the realization of elastic and stretchable conductive tracks
The Center Smart Materials and Adaptive Systems develops materials and processes with which not only flexible but also elastic and stretchable conductive tracks can be realized. Electrically conductive elastomers can be printed in almost any geometry on a stretchable substrate (silicone elastomer or thermoplastic urethane) using modern printing technologies such as flat or roll screen printing. The layer thickness can be adjusted both by material adjustments and by using different screens.
This process can be used to produce very thin conductive structures with a print resolution of a few 100 µm. The electrical conductivity can be adjusted between 0.6 S/cm and 6,000 S/cm depending on the filler used (carbon-based fillers, metal particles or silver nanowires). By designing the conductive path as a conductive elastomer composite, high conductivities under strain (up to 100%) can be achieved.