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Preparation of gas sensors via dip-pen nanolithography |
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| Authors: | Qian San-Qiang |
| Affiliation: | aCollege of Chemistry and Chemical Engineering, Southwest University, Chongqing, China bDepartment of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China |
| Abstract: | In the present work, a conducting polymer, doped polypyrrole, was used to develop a gas sensor by dip-pen nanolithography (DPN). The response time of the sensor to 18 ppm CO2 was 9 s. The sensor response increased linearly as the CO2 concentration increased. A possible mechanism for the CO2 sensing was discussed. |
| Keywords: | Dip-pen nanolithography Conducting polymer Gas sensor Carbon dioxide |
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