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-May-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
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