Reduced graphene oxide-based wearable and bio-electrolyte triggered pressure sensor with tunable sensitivity
- Authors
- Cho, Hyeonho; Lee, Hyoeun; Lee, Sangmin; Kim, Sunghan
- Issue Date
- Jun-2021
- Publisher
- Elsevier Ltd
- Keywords
- Microporous polyurethane; Reduced graphene oxide; Tailorable sensitivity; Wearable pressure sensor
- Citation
- Ceramics International, v.47, no.12, pp 17702 - 17710
- Pages
- 9
- Journal Title
- Ceramics International
- Volume
- 47
- Number
- 12
- Start Page
- 17702
- End Page
- 17710
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/48026
- DOI
- 10.1016/j.ceramint.2021.03.090
- ISSN
- 0272-8842
1873-3956
- Abstract
- Herein, we introduce a wearable, self-powered pressure sensor with tailorable sensitivity using a reduced graphene oxide-coated porous polyurethane (rGO-PP) composite. The micropores of the porous polyurethane (incorporating rGO flakes) create a conductive path which changes based on the applied pressure, resulting in corresponding changes in the electrical signal. The rGO-PP pressure sensor's power is generated using a self-powered galvanic cell and bio-electrolyte extracted from human skin. The rGO-PP pressure sensor circumvents complicated electrical circuits, facilitating its ease of use as a wearable device. Through the serial connection of galvanic cells, the sensitivity of the rGO-PP pressure sensor can be tailored within an extraordinarily wide range between 0.46 to 3.05 kPa−1. The rGO-PP pressure sensors display rapid response times (16 ms). Consequently, they can be used in the development of applications including braille recognition, human-machine interaction, and the restoration of touch perception. © 2021 Elsevier Ltd and Techna Group S.r.l.
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Collections - College of Engineering > School of Mechanical Engineering > 1. Journal Articles
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