標題: | Room-temperature-operated organic-based acetone gas sensor for breath analysis |
作者: | Chuang, Ming-Yen Lin, Yu-Ting Tung, Ting-Wei Chang, Liang-Yu Zan, Hsiao-Wen Meng, Hsin-Fei Lu, Chia-Jung Tao, Yu-Tai 電子物理學系 光電工程學系 Department of Electrophysics Department of Photonics |
關鍵字: | Acetone;Organic sensor;Humidity;Breath analysis;Filter |
公開日期: | 1-五月-2018 |
摘要: | The major merits of organic-based sensors include their low cost, room-temperature operation, and small size. However, their sensitivity and selectivity are concerning, especially in the application of breath analysis. In this work, organic-based sensors were developed based on cylindrical nano-pore structures, which enhanced the sensitivity down to ppb levels. The sensing performance was demonstrated both in pure nitrogen and ambient air. The sensor constructed with poly[(9,9-dioctylfluoreny1-2,7-diy1)-co-(4,41(N-(4-sec-butylphenyl)diphenylamine)] (TFB) exhibited a 5% sensing response to 300 ppb of acetone in ambient air. In addition, the sensor's response to other major breath components, including nitric oxide, ethanol, carbon dioxide, and ammonia, was also established. The results showed that the TFB sensor also exhibited a good response to ammonia. Therefore, a humidification tube was designed as an ammonia filter to improve selectivity. The concept of integrating a highly sensitive sensor with a customized sensing system shows promise for medical applications. (C) 2018 Elsevier B.V. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.snb.2017.12.168 http://hdl.handle.net/11536/144514 |
ISSN: | 0925-4005 |
DOI: | 10.1016/j.snb.2017.12.168 |
期刊: | SENSORS AND ACTUATORS B-CHEMICAL |
Volume: | 260 |
起始頁: | 593 |
結束頁: | 600 |
顯示於類別: | 期刊論文 |