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A resistive-type sensor based on flexible multi-walled carbon nanotubes and polyacrylic acid composite films
- Authors
- Lee, Jeongah; Cho, Daehwan; Jeong, Youngjin
- Issue Date
- Sep-2013
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Carbon nanotubes; Super absorbent polymer; Humidity sensor; Poly(acrylic acid)
- Citation
- SOLID-STATE ELECTRONICS, v.87, pp.80 - 84
- Journal Title
- SOLID-STATE ELECTRONICS
- Volume
- 87
- Start Page
- 80
- End Page
- 84
- ISSN
- 0038-1101
- Abstract
- A humidity sensor film was fabricated by loading high numbers of multi-wall carbon nanotubes (MWCNTs) in a poly(acrylic acid) (PAA) polymer matrix containing poly(4-styrenesulfonic acid) (PSS) to enhance the MWCNT dispersion. Cross-section images demonstrate that the MWCNTs distribute evenly throughout the matrix. The fabrication processes and sensing mechanisms of the film are explained to investigate the flexible properties and humidity-sensing characteristics of the film. The film loaded with 33 wt% MWCNTs is much more flexible than an overhead projector (OHP) film and shows similar electrical resistance to pure CNT Bucky paper. The sensor film composed of 1:2 MWCNTs:PAA is highly sensitive to humidity (0.069/%RH) and displays good linearity (0.99). (c) 2013 Elsevier Ltd. All rights reserved.
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Related Researcher
- JEONG, YOUNG JIN
- College of Engineering (Department of Materials Science and Engineering)