期刊
ANALYTICAL CHEMISTRY
卷 91, 期 1, 页码 817-822出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.8b03004
关键词
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资金
- NSF-ERC PATHS-UP Program
- Texas A&M University Presidential X-Grant
A mid-infrared (mid-IR) sensor chip was demonstrated for volatile organic compound (VOC) detection. The sensor consisted of As2Se3 optical waveguides built by microelectronic fabrication processes. The VOC sensing performance was characterized by measuring acetone and ethanol vapors at their characteristic C-H absorption from lambda = 3.40 to 3.50 mu m. Continuous VOC detection with <5 s response time was achieved by measuring the intensity attenuation of the waveguide mode. The miniaturized noninvasive VOC sensor can be applied to breath analysis and environmental toxin monitoring.
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