A Carbon Flower Based Flexible Pressure Sensor Made from Large-Area Coating

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Flexible pressure sensors are an essential part of robotic skin for human-machine interfaces, wearables, and implantable biomedical devices. However, the desirable characteristics of high sensitivity, conformability, and good scalability are often mutually exclusive. Here, a highly sensitive and flexible pressure sensor that can be easily fabricated by coating a carbon flower and elastomer composite is presented. The composite made from uniform-sized carbon flower particles exhibits a contact-based mechanism for pressure sensing, as opposed to typical carbon black pressure sensitive composites which utilize percolation as the sensing mechanism. The contact mechanism allows for an active layer down to 13 mu m, and a bending insensitivity down to a 5.5 mm bending radius, while maintaining a high sensitivity. Furthermore, the composite is printed over a large 1 m x 2 cm pressure sensing area, showing the preparation of this sensor can be scaled to large area.
Publisher
WILEY
Issue Date
2020-09
Language
English
Article Type
Article; Early Access
Citation

ADVANCED MATERIALS INTERFACES, v.7, no.18, pp.2000875

ISSN
2196-7350
DOI
10.1002/admi.202000875
URI
http://hdl.handle.net/10203/281910
Appears in Collection
EE-Journal Papers(저널논문)
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