Wearable Pressure-Sensitive Devices

A gelatin-based hydrogel addresses the problems presented in constructing wearable pressure-sensitive sensors. The hydrogel has superior elastic properties, skin compatibility and low cost. It also offers ways to fine tune its elastic properties, structural characteristics, and pressure sensitivity by varying its preparation methods and the concentration of its components. This hydrogel has the added feature of transparency upon solidification, which makes it attractive for use as a wearable biosensor.