Title

Strain and pressure gauges from tough, conducting and edible hydrogels

RIS ID

109572

Publication Details

Keller, A., Benz, D. & in het Panhuis, M. (2015). Strain and pressure gauges from tough, conducting and edible hydrogels. MRS Online Proceedings, 1795 27-32.

Abstract

The development of highly conductive, robust edible hydrogels was investigated using a combination of the biopolymers gellan gum and gelatin, a common salt (NaCl) and plant-derived cross-linker (genipin). Robust strain gauge/pressure sensors were developed using edible materials to demonstrate the potential of these hydrogels. The hydrogels exhibited gauge factor and pressure sensitivity values of 7.6 ± 0.1 and 400 ± 7 μΩ/Pa for loads up to 3 kPa, respectively. Furthermore, these devices were able to operate under larger loads with gauge factor and pressure sensitivity values of 0.308 ± 0.002 and 7.17 ± 0.05 μΩ/Pa, respectively, for loads between 9 kPa and 280 kPa.

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Link to publisher version (DOI)

http://dx.doi.org/10.1557/opl.2015.572