All‐Solid‐State Bioinspired Nanofluidic Devices for Coupled Pressure‐ and Light‐Driven Ionic Conversion

ABSTRACT The inherent nonlinearity and limited multimodal sensing capabilities of conventional flexible sensors hinder their applications in complex scenarios such as wearable health monitoring and human‐machine interaction. Here, a fully solid‐state sensor based on MXene/silk fibroin (SF) composite membrane is proposed, which features expanded interlayer spacing and enhanced mechanical strength, achieving a linear and self‐powered conversion of both pressure‐ and light‐driven ionic conversion to electrical responses. In force‐electric conversion mode, the current and voltage sensitivity of the obtained pressure sensor with solid electrolyte can reach 2.667 mA m ⁻² kPa ⁻¹ and 0.083 mV kPa ⁻¹ , respectively. In light‐electric conversion mode, the switching ratio of current is as high as 2658.0, and the response time is as fast as 25 ms. The dual‐mode synergy was successfully applied to wearable physiological monitoring, acoustic wave recognition, image recognition, and information encryption, establishing a new paradigm for next‐generation bionic sensing systems.