Fig. 2From: Electrically Conductive TPU Nanofibrous Composite with High Stretchability for Flexible Strain SensorMorphology and structure of TPU and PANI/TPU membrane. a, b Optical images of pure TPU nanofibrous membrane and PANI/TPU nanofibrous membrane. c, d SEM images of pure TPU nanofibrous membrane and PANI/TPU nanofibrous membraneBack to article page