Flexible Monolithic 3D-Integrated Self-Powered Tactile Sensing Array Based on Holey MXene Paste

Abstract

A flexible monolithic 3D-integrated tactile sensing system, inspired by the tactile perception mechanism of human skin, was developed based on a holey MXene paste. Large-scale device fabrication was achieved using blade-coating and imprinting methods, demonstrating excellent mechanical flexibility, low-power consumption, fast response, and stable long-term performance. The sensor array was integrated into a smart access control system, leveraging deep learning to achieve precise identification based on the unique pressing behaviors of users.