A Sensitive and Response-Stable Strain Sensor with 30% Sensing Regions

Wearable strain sensor can be mounted on textiles and attached onto human skins to detect various mechanical motions and health conditions. Here, we report a sensitive and response-stable strain sensor based on the polymers consisting of the super acid-treated poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and polydimethylsiloxane. The polymer-based strain sensor exhibits a high sensitivity of 26.6–30.6 and a stable response with a large sensing strain of up to 30% for a potential application.