Highly Stretchable and Transparent Hydrogel as a Strain Sensor

The rapid developments of artificial intelligence have attracted attention in designing electronic skin (e-skin) to realize the mechanical and sensory properties of human skin. To better imitate the tactile sensing properties of human skin, a stretchable and transparent hydrogel is produced. Thus, an elastic and capacitive strain sensor was successfully produced through the as-prepared hydrogel. The sensor was elastic with a high conductive stability and could detect the strain changes in different states, which had very short response time that could be applied into the detection of large and small deformations and would shed light on its application in e-skin.