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Wavelength‐Gradient Graphene Films for Pressure‐Sensitive Sensors
Author(s) -
Wang Mingti,
Qiu Yuanyou,
Jia Jin,
Wang Chengzhong,
Deng Jianping,
Pan Kai
Publication year - 2019
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.201800363
Subject(s) - graphene , materials science , wavelength , optoelectronics , pressure gradient , temperature gradient , pressure sensor , sensitivity (control systems) , electrical resistivity and conductivity , conductivity , potential gradient , nanotechnology , composite material , electronic engineering , electrical engineering , mechanics , chemistry , mechanical engineering , physics , quantum mechanics , engineering
Graphene, because of its prominent mechanical strength, high electric and thermal conductivity, high carrier mobility and stability, is considered as a candidate material for fabricating pressure‐sensitive electronic skins. Here, the piezoresistance pressure sensors using wavelength‐gradient graphene films are developed. In addition, the wavelength‐gradient graphene film possesses a wavy structure and a gradient structure simultaneously. The prepared sensors can exhibit different current change on the different areas under the equal applied pressures due to the effects of gradient structure. Meanwhile, other intriguing pressure‐sensing properties of the sensors are also demonstrated, especially a high sensitivity and promising potential as wearable devices.