Journal
IEEE SENSORS JOURNAL
Volume 15, Issue 12, Pages 7017-7020Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2015.2472968
Keywords
Carbon nanotube; gas sensor; flexible
Funding
- National Science Council of Taiwan [NSC 102-2221-E-150-046, NSC 101-2221-E-150-043]
- Ministry of Science and Technology [MOST 103-2221-E-150-034, MOST 104-2221-E-150-042]
- Common Laboratory for Micro/Nano Science and Technology, National Formosa University
- Center for Micro/Nano Science and Technology, National Cheng Kung University
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This paper presents a flexible carbon nanotube (CNT)-based gas sensor on a low-cost polyimide substrate that responds immediately to CO2 at room temperature. Highly uniform CNT thin films, prepared by a reliable and reproducible transfer process, are used as resistive networks in gas detection. The flexible gas sensor exhibited a high sensitivity of 2.23% at room temperature when the concentration of ambient CO2 gas was 800 ppm. Both the speed and the stability of response of the fabricated sensor were favorable.
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