Journal
ADVANCED MATERIALS
Volume 29, Issue 31, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201606411
Keywords
all-carbon materials; collaborative nanoarchitectures; epidermal sensors
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Funding
- NNSF of China [61525402, 21275076]
- Key University Science Research Project of Jiangsu Province [15KJA430006]
- Program for New Century Excellent Talents in University [NCET-13-0853]
- KAUST
- QingLan Project
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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.
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