A bioinspired porous-designed hydrogel@polyurethane sponge piezoresistive sensor for human–machine interfacing

(100 Pa-10.0 kPa) and -1.33 (1-60% strain), respectively. Based on its flexibility, compressibility, and wide-ranging linear resistance changes, the proposed sensor has huge potential application in human activity monitoring, electronic skin, and wearable electronic devices.