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Extraordinarily Stretchable All‐Carbon Collaborative Nanoarchitectures for Epidermal Sensors
Author(s) -
Cai Yichen,
Shen Jie,
Dai Ziyang,
Zang Xiaoxian,
Dong Qiuchun,
Guan Guofeng,
Li LainJong,
Huang Wei,
Dong Xiaochen
Publication year - 2017
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201606411
Subject(s) - materials science , gauge factor , graphene , nanotechnology , microelectronics , carbon nanotube , percolation (cognitive psychology) , carbon fibers , electronic skin , optoelectronics , composite material , fabrication , medicine , alternative medicine , pathology , neuroscience , composite number , biology
Multifunctional microelectronic components featuring large stretchability, high sensitivity, high signal‐to‐noise ratio (SNR), and broad sensing range have attracted a huge surge of interest with the fast developing epidermal electronic systems. Here, the epidermal sensors based on all‐carbon collaborative percolation network are demonstrated, which consist 3D graphene foam and carbon nanotubes (CNTs) obtained by two‐step chemical vapor deposition processes. The nanoscaled CNT networks largely enhance the stretchability and SNR of the 3D microarchitectural graphene foams, endowing the strain sensor with a gauge factor as high as 35, a wide reliable sensing range up to 85%, and excellent cyclic stability (>5000 cycles). The flexible and reversible strain sensor can be easily mounted on human skin as a wearable electronic device for real‐time and high accuracy detecting of electrophysiological stimuli and even for acoustic vibration recognition. The rationally designed all‐carbon nanoarchitectures are scalable, low cost, and promising in practical applications requiring extraordinary stretchability and ultrahigh SNRs.