Individually Addressable Suspended Conducting-Polymer Wires in a Chemiresistive Gas Sensor
- Authors
- Chang, Won Suk; Kim, Jung Hyun; Kim, Daeho; Cho, Sung Ho; Seol, Seung Kwon
- Issue Date
- Sep-2014
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- chemiresistive gas sensors; fountain-pen lithography (FPL); poly(3; 4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS); wire transducers; 3D printing
- Citation
- MACROMOLECULAR CHEMISTRY AND PHYSICS, v.215, no.17, pp.1633 - 1638
- Indexed
- SCIE
SCOPUS
- Journal Title
- MACROMOLECULAR CHEMISTRY AND PHYSICS
- Volume
- 215
- Number
- 17
- Start Page
- 1633
- End Page
- 1638
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/159220
- DOI
- 10.1002/macp.201400220
- ISSN
- 1022-1352
- Abstract
- An effective method is described for producing poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) arched microwires, which are used as transducers in chemiresistive gas sensors. Three-dimensional arched wires with diameters of 0.8, 1.2, 2.5, and 10 m are individually fabricated by using a simple, inexpensive fountain-pen lithography technique. The wires show superior stretchable behavior under omnidirectional strain of ca. 120%. A gas sensor assembled with the PEDOT:PSS arched wires exhibits linear responses to the concentrations of different vapor gases, such as ethanol, acetone, and methanol, at room temperature. The signal-to-noise ratio in the sensing response, which influences the detection limit, is enhanced by increasing the number of wires with a larger surface-to-volume ratio in parallel to increasing the signal level and diminishing the baseline noise in the wire transducers.
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