Fig. 15
a The spinous microstructure model of human skin [22]. b The sections and models of the microstructure of the Ti3C2Tx MXene-based bionic E-skin in pristine, light-loaded, heavy-loaded, and recovered conditions [22]. Copyright 2020, American Chemical Society. c Variation in relative current at different pressures [219]. Copyright 2022, Springer Nature. d Photographs of the elbow joint with MXene array sensing E-skin under different motion states and the corresponding mapping of the strain-induced capacitance distribution [267]. Copyright 2021, American Chemical Society. e Schematic diagram of thermal response of MXene bionic E-skin [288]. f Temperature sensitivity of Ti3C2Tx MXene-based bionic E-skin [288]. Copyright 2022, Wiley–VCH. g Ti3C2Tx MXene-based array unit, and its response to temperature [204]. Copyright 2019, Royal Society of Chemistry. h Hydrophilic characterization of MXene and its complex [65]. Copyright 2021, Springer Singapore. i Change in relative resistance of the MXene-based bionic E-skin with increasing humidity [203]. Copyright 2020, American Chemical Society. j The humidity response of the MXene-based bionic E-skin during humidification and drying [284]. Copyright 2022, Elsevier