Mixed-dimensional MXene-hydrogel heterostructures for electronic skin sensors with ultrabroad working range

Yichen Cai, Jie Shen, Chih-Wen Yang, Yi Wan, Hao-Ling Tang, Areej Aljarb, Cailing Chen, Jui-Han Fu, Xuan Wei, Kuo-Wei Huang, Yu Han, Steven J. Jonas, Xiaochen Dong, Vincent Tung

Research output: Contribution to journalArticlepeer-review

123 Scopus citations


Skin-mountable microelectronics are garnering substantial interest for various promising applications including human-machine interfaces, biointegrated devices, and personalized medicine. However, it remains a critical challenge to develop e-skins to mimic the human somatosensory system in full working range. Here, we present a multifunctional e-skin system with a heterostructured configuration that couples vinyl-hybrid-silica nanoparticle (VSNP)–modified polyacrylamide (PAM) hydrogel with two-dimensional (2D) MXene through nano-bridging layers of polypyrrole nanowires (PpyNWs) at the interfaces, featuring high toughness and low hysteresis, in tandem with controlled crack generation and distribution. The multidimensional configurations endow the e-skin with an extraordinary working range (2800%), ultrafast responsiveness (90 ms) and resilience (240 ms), good linearity (800%), tunable sensing mechanisms, and excellent reproducibility. In parallel, this e-skin platform is capable of detecting, quantifying, and remotely monitoring stretching motions in multiple dimensions, tactile pressure, proximity sensing, and variations in temperature and light, establishing a promising platform for next-generation smart flexible electronics.
Original languageEnglish (US)
Pages (from-to)eabb5367
JournalScience advances
Issue number48
StatePublished - Nov 27 2020


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