Highly sensitive active-powering pressure sensor enabled by integration of double-rough surface hydrogel and flexible batteries

Abstract A conductive, elastic, and biocompatible hybrid network hydrogel was prepared by cross-linking of locust bean gum, polyvinyl alcohol, carbon nanotubes, yielding a rough top surface smooth bottom surface. The merging the two pieces flat face to forms highly elastic with double-rough surfaces. piezoresistive sensor assembled sandwiched between cloth electrodes exhibits high sensitivity (20.5 kPa-1, 0-1kPa), broad detection range (0.1–100 kPa) reliable response for 1000 cycles. contact area hydrogels is found critical in achieving ultra-high sensitivities low-pressure range. Moreover, further monolithic integration flexible solid-state zinc ion battery ensures self-powering various human motions applications.