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Vol. 14 (2022)

Bioinspired MXene-Based User-Interactive Electronic Skin for Digital and Visual Dual-Channel Sensing

https://doi.org/10.1007/s40820-022-00838-0
Wentao Cao
Department of Orthopedic, School of Medicine, Spinal Pain Research Institute, Shanghai Tenth People’s Hospital, Tongji University, Shanghai 200072, People’s Republic of China
Zheng Wang
Department of Orthopedic, School of Medicine, Spinal Pain Research Institute, Shanghai Tenth People’s Hospital, Tongji University, Shanghai 200072, People’s Republic of China
Xiaohao Liu
Department of Orthopedic, School of Medicine, Spinal Pain Research Institute, Shanghai Tenth People’s Hospital, Tongji University, Shanghai 200072, People’s Republic of China
Zhi Zhou
Department of Orthopedic, School of Medicine, Spinal Pain Research Institute, Shanghai Tenth People’s Hospital, Tongji University, Shanghai 200072, People’s Republic of China
Yue Zhang
Department of Orthopedic, School of Medicine, Spinal Pain Research Institute, Shanghai Tenth People’s Hospital, Tongji University, Shanghai 200072, People’s Republic of China
Shisheng He
Department of Orthopedic, School of Medicine, Spinal Pain Research Institute, Shanghai Tenth People’s Hospital, Tongji University, Shanghai 200072, People’s Republic of China
Daxiang Cui
Department of Orthopedic, School of Medicine, Spinal Pain Research Institute, Shanghai Tenth People’s Hospital, Tongji University, Shanghai 200072, People’s Republic of China
Feng Chen
Department of Orthopedic, School of Medicine, Spinal Pain Research Institute, Shanghai Tenth People’s Hospital, Tongji University, Shanghai 200072, People’s Republic of China

Corresponding Author: Feng Chen

fchen@tongji.edu.cn

Nano-Micro Letters, Vol. 14 (2022), Article Number: 119

Abstract

User-interactive electronic skin (e-skin) that could convert mechanical stimuli into distinguishable outputs displays tremendous potential for wearable devices and health care applications. However, the existing devices have the disadvantages such as complex integration procedure and lack of the intuitive signal display function. Here, we present a bioinspired user-interactive e-skin, which is simple in structure and can synchronously achieve digital electrical response and optical visualization upon external mechanical stimulus. The e-skin comprises a conductive layer with a carbon nanotubes/cellulose nanofibers/MXene nanohybrid network featuring remarkable electromechanical behaviors, and a stretchable elastomer layer, which is composed of silicone rubber and thermochromic pigments. Furthermore, the conductive nanohybrid network with outstanding Joule heating performance can generate controllable thermal energy under voltage input and then achieve the dynamic coloration of silicone-based elastomer. Especially, such an innovative fusion strategy of digital data and visual images enables the e-skin to monitor human activities with evermore intuition and accuracy. The simple design philosophy and reliable operation of the demonstrated e-skin are expected to provide an ideal platform for next-generation flexible electronics.


Highlights:


1 A bioinspired MXene-based user-interactive electronic skin (e-skin) for digital and visual dual-signal sensing was designed and fabricated.
2 The MXene-based e-skin exhibited an excellent electromechanical sensing performance and realized the real-time monitoring of human activities, such as handwriting, drinking, walking, and speaking.
3 Benefiting from the outstanding Joule-heating performance of MXene-based film, the e-skin with thermochromic pigments could realize a wider range and dynamic coloration for passive displays and visual recognition of various human motions.

Keywords

MXene Electronic skin Electromechanical behavior Joule heating Visualization
Cao, Wentao, Zheng Wang, Xiaohao Liu, Zhi Zhou, Yue Zhang, Shisheng He, Daxiang Cui, and Feng Chen. 2022. “Bioinspired MXene-Based User-Interactive Electronic Skin for Digital and Visual Dual-Channel Sensing”. Nano-Micro Letters 14 (May):119. https://doi.org/10.1007/s40820-022-00838-0.
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