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Highly Compressible Integrated Supercapacitor–Piezoresistance‐Sensor System with CNT–PDMS Sponge for Health Monitoring
Author(s) -
Song Yu,
Chen Haotian,
Su Zongming,
Chen Xuexian,
Miao Liming,
Zhang Jinxin,
Cheng Xiaoliang,
Zhang Haixia
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201702091
Subject(s) - materials science , wearable computer , supercapacitor , polydimethylsiloxane , wearable technology , nanotechnology , microsystem , microelectromechanical systems , carbon nanotube , optoelectronics , electrode , acoustics , computer science , capacitance , embedded system , chemistry , physics
Rapid improvement of wearable electronics stimulates the demands for the matched functional devices and energy storage devices. Meanwhile, wearable microsystem requires every parts possessing high compressibility to accommodate large‐scale mechanical deformations and complex conditions. In this work, a general carbon nanotube–polydimethylsiloxane (CNT–PDMS) sponge electrode is fabricated as the elementary component of the compressible system. CNT–PDMS sponge performs high sensitivity as a piezoresistance sensor, which is capable of detecting stress repeatedly and owns great electrochemical performance as a compressible supercapacitor which maintains stably under compressive strains, respectively. Assembled with the piezoresistance sensor and the compressible supercapacitor, such highly compressible integrated system can power and modulate the low‐power electronic devices reliably. More importantly, attached to the epidermal skin or clothes, it can detect human motions, ranging from speech recognition to breathing record, thus showing feasibility in real‐time health monitor and human–machine interfaces.