Flexible Conformally Bioadhesive MXene Hydrogel Electronics for Machine Learning‐Facilitated Human‐Interactive Sensing

Abstract

Wearable epidermic electronics assembled from conductive hydrogels are attracting various research attention for their seamless integration with human body for conformally real‐time health monitoring, clinical diagnostics and medical treatment, and human‐interactive sensing. Nevertheless, it remains a tremendous challenge to simultaneously achieve conformally bioadhesive epidermic electronics with remarkable self‐adhesiveness, reliable ultraviolet (UV)‐protection ability, and admirable sensing performance for high‐fidelity epidermal electrophysiological signals monitoring, along with timely photothermal therapeutic performances after medical diagnostic sensing, as well as efficient antibacterial activity and reliable hemostatic effect for potential medical therapy. Herein, a conformally bioadhesive hydrogel‐based epidermic sensor, featuring superior self‐adhesiveness and excellent UV‐protection performance, is developed by dexterously assembling conducting MXene nanosheets network with biological hydrogel polymer network for conformally stably attaching onto human skin for high‐quality recording of various epidermal electrophysiological signals with high signal‐to‐noise ratios (SNR) and low interfacial impedance for intelligent medical diagnosis and smart human‐machine interface. Moreover, a smart sign language gesture recognition platform based on collected EMG signals are designed for hassle‐free communication with hearing‐impaired people with the help of advanced machine learning algorithms. Meanwhile, the bioadhesive MXene hydrogel possesses reliable antibacterial capability, excellent biocompatibility and effective hemostasis properties for promising bacterial‐infected wound bleeding.This article is protected by copyright. All rights reserved

Strain-Temperature Dual Sensor Based on Deep Learning Strategy for Human–Computer Interaction Systems

“…This enables the monitoring of human movements and various other applications. 44,45 To examine the PPC hydrogel's performance at room temperature, Figure 4b presents its reaction time during stretching and recovery, clocking at 0.16 s, indicating swift responsiveness to external forces. Additionally, the sensitivity of the PPC hydrogel was further assessed, as shown in Figure 4c, indicating high sensitivity across a wide strain range (0−400%) (GF = 2.97).…”

“…It then converts chemical signals into electrical signals, leading to resistance changes (Figure a). This enables the monitoring of human movements and various other applications. , …”

Temperature-Tolerant Versatile Conductive Zwitterionic Nanocomposite Organohydrogel toward Multisensory Applications

“…Balancing the environmental adaptability and conductivity of organohydrogels is a considerable challenge, which hinders the function of flexible devices. To settle this issue, conductive organohydrogels are constructed through employing conductive components, such as conductive polymers, − carbon nanotubes, − reduced graphene oxide (rGO), − and MXene nanosheets, − in the hydrogel substrate. Among these conductive components, rGO nanosheets are considered to be a promising candidate in the construction of conductive nanocomposite organohydrogels on account of their satisfactory electrical and mechanical features, together with their high specific surface area .…”