Bioinspired Iontronic Pressure Sensor with Ultrawide Range and High Sensitivity.

The trade-off between sensitivity and detection range has limited the performance of flexible pressure sensors, hindering their deployment in advanced human-machine interfaces and precision healthcare monitoring. Inspired by the ion-mediated electrogenesis of electric eels, we report a bioinspired iontronic pressure sensor (IPS) that overcomes this bottleneck by coupling MXene-functionalized electrodes with a hierarchical silica aerogel/ionic liquid (ILA) dielectric. This architecture enables pressure-driven, reversible ion migration within the porous dielectric and enhances electrical double-layer (EDL) formation at the electrode-dielectric interface.