All-graphene strain sensor on soft substrate
- Authors
- Chun, Sungwoo; Choi, Yeonhoi; Park, Wanjun
- Issue Date
- May-2017
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Graphene sensors; Graphene strain sensors; Graphene electrodes; Single-layer graphene; Graphene flakes
- Citation
- CARBON, v.116, pp.753 - 759
- Indexed
- SCIE
SCOPUS
- Journal Title
- CARBON
- Volume
- 116
- Start Page
- 753
- End Page
- 759
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2472
- DOI
- 10.1016/j.carbon.2017.02.058
- ISSN
- 0008-6223
- Abstract
- We propose a transparent and stretchable all-graphene strain sensor that can detect various types of strain induced via stretching, bending, and torsion. The sensor is fabricated by introducing single-layer graphene as a force sensing material with a conductive film composed of graphene flake for the electrode. With the exclusive use of flexible materials, the completed strain sensor is fully flexible. Using a serpentine-shaped pattern for the single-layer graphene, the sensor is capable of stretching up to 20% with a high gauge factor (42.2). In addition, the sensor provides functional extension to bi-directional responses. This sensor can detect infinitesimal strain as low as 0.1% with a relative resistance change (Delta R/R-0) of similar to 0.005. Finally, sensitive detection of strains induced via bending and torsion are successfully demonstrated.
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