Iontronics for adaptive and flexible pressure sensing

Flexible pressure sensors are vital for electronic skin, wearable electronics, and soft robotics. However, conventional electronic pressure sensors based on solid-state dielectrics suffer from limited dielectric tunability, mechanical instability, and static-dynamic response crosstalk, constraining their overall sensitivity and adaptability. Iontronics overcomes these constraints by introducing ionic dielectrics that form nanoscale electrical double layers (EDLs), where interfacial ion migration and polarization yield ultrahigh capacitance, high sensitivity, and dynamic adaptability. This iontronics mechanism not only enhances sensitivity and durability but also offers intrinsic biocompatibility and resistance…