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Facile fabrication of flexible piezo-resistive pressure sensor array using reduced graphene oxide foam and silicone elastomer.

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Title: Facile fabrication of flexible piezo-resistive pressure sensor array using reduced graphene oxide foam and silicone elastomer.
Authors: Gilanizadehdizaj, Golezar1 (AUTHOR), Aw, Kean C.1 (AUTHOR) k.aw@auckland.ac.nz, Stringer, Jonathan1 (AUTHOR), Bhattacharyya, Debes1 (AUTHOR)
Source: Sensors & Actuators A: Physical. Jun2022, Vol. 340, pN.PAG-N.PAG. 1p.
Subjects: Pressure sensors, Sensor arrays, Graphene oxide, Elastomers, Carbon foams, Silicone rubber, Silicones, Urethane foam
Abstract: Electronic skins have attracted significant interest due to their broad applications in our daily lives. Flexible pressure sensors form one of the essential parts of any electronic skin. Achieving high-performance electronic skins requires ways to make pressure sensor arrays with high sensitivity and good flexibility. We report on the facile fabrication of flexible piezo-resistive pressure sensor arrays with excellent mechanical stability, high sensitivity, and a wide working range (0–30 kPa) of pressure using reduced graphene oxide (rGO) on flexible PCB (FPCB). It shows a remarkable sensitivity of 0.13 kPa−1 in the pressure range < 10 kPa and 0.05 kPa−1 in the range of > 10 kPa, covering a broad spectrum of testing conditions. We demonstrated that it could provide a pressure map and intensity, giving tactile information of the pressure exerted on our prototype with a 4 × 4 array. [Display omitted] • Simple fabrication technique of flexible sensor using graphene oxide. • All electrodes are at the backplane and not exposed to loading. • High sensitivity at low pressure. • Sensor array is capable of object recognition. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Electronic skins have attracted significant interest due to their broad applications in our daily lives. Flexible pressure sensors form one of the essential parts of any electronic skin. Achieving high-performance electronic skins requires ways to make pressure sensor arrays with high sensitivity and good flexibility. We report on the facile fabrication of flexible piezo-resistive pressure sensor arrays with excellent mechanical stability, high sensitivity, and a wide working range (0–30 kPa) of pressure using reduced graphene oxide (rGO) on flexible PCB (FPCB). It shows a remarkable sensitivity of 0.13 kPa−1 in the pressure range < 10 kPa and 0.05 kPa−1 in the range of > 10 kPa, covering a broad spectrum of testing conditions. We demonstrated that it could provide a pressure map and intensity, giving tactile information of the pressure exerted on our prototype with a 4 × 4 array. [Display omitted] • Simple fabrication technique of flexible sensor using graphene oxide. • All electrodes are at the backplane and not exposed to loading. • High sensitivity at low pressure. • Sensor array is capable of object recognition. [ABSTRACT FROM AUTHOR]
ISSN:09244247
DOI:10.1016/j.sna.2022.113549