Pressure-sensitive strain sensor based on a single percolated Ag nanowire layer embedded in colorless polyimide
- Authors
- Lee, Chan-Jae; Jun, Sungwoo; Ju, Byeong-Kwon; Kim, Jong-Woong
- Issue Date
- 1-6월-2017
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Silver nanowire; Strain sensor; Pressure sensor; Flexible electrode; Composite
- Citation
- PHYSICA B-CONDENSED MATTER, v.514, pp.8 - 12
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICA B-CONDENSED MATTER
- Volume
- 514
- Start Page
- 8
- End Page
- 12
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/83165
- DOI
- 10.1016/j.physb.2017.03.019
- ISSN
- 0921-4526
- Abstract
- This paper presents the fabrication of an elastomer-free, transparent, pressure-sensitive strain sensor consisting of a specially designed silver nanowire (AgNW) pattern and colorless polyimide (cPI). A percolated AgNW network was patterned with a simple tandem compound circuit, which was then embedded in the surface of the cPI via inverted layer processing. The resulting film-type sensor was highly transparent (similar to 93.5% transmittance at 550 nm) and mechanically stable (capable of resisting 10000 cycles of bending to a 500 AEm radius of curvature). We demonstrated that a thin, transparent, and mechanically stable electrode can be produced using a combination of AgNWs and cPI, and used to produce a system sensitive to pressure-induced bending. The capacitance of the AgNW tandem compound electrode pattern grew via fringing, which increased with the pressure-induced bending applied to the surface of the sensor. The sensitivity was four times higher than that of an elastomeric pressure sensor made with the same design. Finally, we demonstrated a skin-like pressure sensor attached to the inside wrist of a human arm.
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Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
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