Graphene oxide as high-performance dielectric materials for capacitive pressure sensors

Graphene oxide (GO) foam exhibits both excellent elastic property and high relative dielectric permittivity, which is a novel building block for future wearable electronic devices. Herein we present an ultra-sensitive GO-based capacitive pressure sensor with graphene as electrodes by an efficient, l...

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Bibliographic Details
Published in:Carbon (New York) 2017-04, Vol.114, p.209-216
Main Authors: Wan, Shu, Bi, Hengchang, Zhou, Yilong, Xie, Xiao, Su, Shi, Yin, Kuibo, Sun, Litao
Format: Article
Language:English
Subjects:
Automation
Dielectric properties
Elastic properties
Electronic devices
Graphene
Human-computer interface
Industrial robots
Manufacturing engineering
Permittivity
Pressure distribution
Pressure sensors
Recording
Response time
Robotics
Robustness
Stress concentration
User interfaces
Wearable technology
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Summary:Graphene oxide (GO) foam exhibits both excellent elastic property and high relative dielectric permittivity, which is a novel building block for future wearable electronic devices. Herein we present an ultra-sensitive GO-based capacitive pressure sensor with graphene as electrodes by an efficient, low-cost fabrication strategy over large-area integration as well as patterning for recording spatial pressure distribution. The GO-based sensor can detect a subtle pressure of ∼0.24Pa with a fast response time (∼100 m) and a high sensitivity (∼0.8 kPa−1). The superior sensing properties combining with good flexibility and robustness reveal a great application potential in various fields, such as health monitoring, flexible human-computer user interfaces, and robotics, which also give a new insight for all-carbon electronics. [Display omitted]
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2016.12.023