Highly stretchable resistive pressure sensors using a conductive elastomeric composite on a micropyramid array

Abstract

A stretchable resistive pressure sensor is achieved by coating a compressible substrate with a highly stretchable electrode. The substrate contains an array of microscale pyramidal features, and the electrode comprises a polymer composite. When the pressure-induced geometrical change experienced by the electrode is maximized at 40% elongation, a sensitivity of 10.3 kPa(-1) is achieved.This research was supported in part by Advanced Soft Electronics under the Global Frontier Research Program (2011-0031659). We thank Alberdingk Boley for providing the Alberdingk U3251 and U2101 and for relevant technical data