Compact Submillimeter/Terahertz Gas Sensor With Efficient Gas Collection, Preconcentration, and ppt Sensitivity

Although heretofore unrealized, it has long been known the rotational fingerprints of gases that occupy the submillimeter/terahertz (SMM/THz) spectral region can provide a basis for analytical systems with unique gas detection, identification, and quantification capabilities. Among these capabilitie...

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Bibliographic Details
Published in:IEEE sensors journal 2012-08, Vol.12 (8), p.2565-2574
Main Authors: Neese, C. F., Medvedev, I. R., Plummer, G. M., Frank, A. J., Ball, C. D., De Lucia, F. C.
Format: Article
Language:English
Subjects:
Chemical sensors
Collection
Doppler effect
Electron tubes
Fingerprints
gas detectors
Gases
Libraries
Mathematical analysis
millimeter and submillimeter techniques
Packages
Quantitative analysis
Rotational
Sensitivity
Sensors
Spectra
Spectroscopy
terahertz
Vacuum systems
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Summary:Although heretofore unrealized, it has long been known the rotational fingerprints of gases that occupy the submillimeter/terahertz (SMM/THz) spectral region can provide a basis for analytical systems with unique gas detection, identification, and quantification capabilities. Among these capabilities are near absolute specificity, even in complex mixtures, quantitative analysis, and excellent sensitivity to small samples. This paper describes such a system, self-contained in a 1 cu. ft. package. This system combines modern SMM/THz technology, sorbents to capitalize on the small sample requirements of the spectroscopic technique, and modern computational power to use the information contained in the complex rotational fingerprints. Moreover, the system and approach described show a clear path to future sensor systems that can be even smaller and more robust, as well as very inexpensive.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2012.2195487