材料科学
灵敏度(控制系统)
多孔性
气体分析呼吸
微型多孔材料
传质
纹影
纳米技术
多孔介质
焊剂(冶金)
化学工程
复合材料
色谱法
化学
航空航天工程
电子工程
工程类
冶金
作者
Wanqiao Bai,Ruonan Wu,Zhenjie Xue,Xiaomin Song,Zijun Xia,Kailin Zhang,Kang Shao,Yan Li,Tie Wang
标识
DOI:10.1002/adfm.202401421
摘要
Abstract Detecting volatile organic compounds (VOCs) in exhaled breath is a promising research area for disease diagnosis. Mass transfer behavior plays a crucial role in determining the detection performance of VOCs. However, the high mobility of exhaled breath poses a substantial challenge for the mass transfer process. Here, the distinct mass transfer behavior of mobile gaseous molecules is discovered by employing the schlieren imaging technique to visualize gas flow. The results demonstrate that hollow porous structures exhibit a higher gas flow flux than solid film and microporous structures, thereby generating a sufficient probability of contact reactions for mobile gaseous molecules. The proposed colorimetric array sensors offer enhanced sensitivity and stability for detecting mobile gaseous molecules. The discovery will serve as a foundational milestone is anticipated in elucidating the behavior of gas mass transfer and promoting its potential application in disease detection through the analysis of human exhaled breath.
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