Au-Based Biocompatible Capacitive Strain Sensor

Various strain sensors have been developed due to their capability to monitor a piece of basic physiological information. However, a lot of existing strain sensor is based on planar soft sensors, which have a few critical challenges such as structural mismatch and stable fixation on the target organ. Here, we present a 1-dimensional and biocompatible capacitive fiber strain sensor. The fiber strain sensor comprises a conductive fiber electrode based on Au, a representative biocompatible material. The structure of the fiber strain sensor is a double helix. The sensor shows high sensitivity of ~9.8 and high stability.