“…Among the sensors, flexible pressure sensors are popular due to their advantages such as flexibility, conformal attachment, and high sensitivity, showing great applications in wearable devices, 1,2 electronic skin, 3,4 human–computer interaction, 5,6 medical and healthcare, 7,8 etc. By far, various materials including polyimide (PI), 9,10 polyethylene terephthalate (PET), 11,12 polydimethylsiloxane (PDMS), 13–15 polyurethane (PU), 16,17 etc. , have been exploited as substrates to develop flexible pressure sensors.…”